10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 10-Q

QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d)

OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended March 31, 2015

Commission File No. 00-30747

PACWEST BANCORP

(Exact name of registrant as specified in its charter)

Delaware	33-0885320
(State of Incorporation)	(I.R.S. Employer Identification No.)

10250 Constellation Blvd., Suite 1640

Los Angeles, CA 90067

(Address of Principal Executive Offices, Including Zip Code)

(310) 286-1144

(Registrant's Telephone Number, Including Area Code)

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.

    Yes  þ      No  o

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).

    Yes  þ      No  o

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act. (Check one):

þ Large accelerated filer		o Accelerated filer
o Non-accelerated filer	(Do not check if a smaller reporting company)	o Smaller reporting company

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).     Yes  o      No  þ

As of April 29, 2015, there were 101,855,519 shares of the registrant's common stock outstanding, excluding 1,129,445 shares of unvested restricted stock.

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PACWEST BANCORP

TABLE OF CONTENTS

		Page
PART I. FINANCIAL INFORMATION
Item 1.	Condensed Consolidated Financial Statements (Unaudited)
	Condensed Consolidated Balance Sheets (Unaudited)	3
	Condensed Consolidated Statements of Earnings (Unaudited)	4
	Condensed Consolidated Statements of Comprehensive Income (Unaudited)	5
	Condensed Consolidated Statement Changes in Stockholders' Equity (Unaudited)	6
	Condensed Consolidated Statements of Cash Flows (Unaudited)	7
	Notes to Condensed Consolidated Financial Statements (Unaudited)	8
Item 2.	Management's Discussion and Analysis of Financial Condition and Results of Operations	44
Item 3.	Quantitative and Qualitative Disclosures About Market Risk	87
Item 4.	Controls and Procedures	87
PART II. OTHER INFORMATION
Item 1.	Legal Proceedings	87
Item 1A.	Risk Factors	88
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	89
Item 6.	Index to Exhibits	90
Signatures		91

2

PACWEST BANCORP AND SUBSIDIARIES

CONDENSED CONSOLIDATED BALANCE SHEETS

	March 31, 2015			December 31, 2014
	(Unaudited)
	(Dollars in thousands)
ASSETS
Cash and due from banks	$	140,873		$	164,757
Interest-earning deposits in financial institutions	250,981			148,469
Total cash and cash equivalents	391,854			313,226
Securities available-for-sale, at fair value	1,595,409			1,567,177
Federal Home Loan Bank stock, at cost	28,905			40,609
Total investment securities	1,624,314			1,607,786
Gross loans and leases	12,302,292			11,904,684
Deferred fees and costs	(30,126		)	(22,252		)
Allowance for loan and lease losses	(92,378		)	(84,455		)
Total loans and leases, net	12,179,788			11,797,977
Equipment leased to others under operating leases	119,959			122,506
Premises and equipment, net	36,022			36,551
Foreclosed assets, net	35,940			43,721
Goodwill	1,728,380			1,720,479
Core deposit and customer relationship intangibles, net	15,703			17,204
Deferred tax asset, net	236,065			284,411
Other assets	275,915			290,744
Total assets	$	16,643,940		$	16,234,605
LIABILITIES:
Noninterest-bearing deposits	$	3,029,463		$	2,931,352
Interest-bearing deposits	8,904,712			8,823,776
Total deposits	11,934,175			11,755,128
Borrowings	618,156			383,402
Subordinated debentures	431,448			433,583
Accrued interest payable and other liabilities	126,800			156,262
Total liabilities	13,110,579			12,728,375
Commitments and contingencies (Note 10)	—			—
STOCKHOLDERS' EQUITY:
Preferred stock ($0.01 par value; 5,000,000 shares authorized; none issued and outstanding)	—			—
Common stock ($0.01 par value, 200,000,000 shares authorized at March 31, 2015 and December 31, 2014; 104,241,437 and 104,219,197 shares issued, respectively, including 1,129,445 and 1,108,505 shares of unvested restricted stock, respectively)	1,042			1,042
Additional paid-in capital	3,758,855			3,807,167
Accumulated deficit	(212,633		)	(285,712		)
Treasury stock, at cost (1,197,180 shares at March 31, 2015 and December 31, 2014)	(42,647		)	(42,647		)
Accumulated other comprehensive income, net	28,744			26,380
Total stockholders' equity	3,533,361			3,506,230
Total liabilities and stockholders' equity	$	16,643,940		$	16,234,605

See Notes to Condensed Consolidated Financial Statements.

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PACWEST BANCORP AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF EARNINGS

	Three Months Ended
	March 31, 2015			December 31, 2014			March 31, 2014
	(Unaudited)
	(Dollars in thousands, except per share data)
Interest income:
Loans and leases	$	202,097		$	197,472		$	77,463
Investment securities	12,195			12,205			10,823
Deposits in financial institutions	22			19			74
Total interest income	214,314			209,696			88,360
Interest expense:
Deposits	10,479			9,972			1,225
Borrowings	235			144			79
Subordinated debentures	4,525			4,597			1,041
Total interest expense	15,239			14,713			2,345
Net interest income	199,075			194,983			86,015
Provision (negative provision) for credit losses	16,434			2,063			(644		)
Net interest income after provision (negative provision) for credit losses	182,641			192,920			86,659
Noninterest income:
Service charges on deposit accounts	2,574			2,787			3,002
Other commissions and fees	5,396			4,556			1,932
Leased equipment income	5,382			5,382			—
Gain on sale of loans and leases	—			7			106
Gain on securities	3,275			—			4,752
FDIC loss sharing expense, net	(4,399		)	(4,360		)	(11,430		)
Other income	8,643			4,331			6,329
Total noninterest income	20,871			12,703			4,691
Noninterest expense:
Compensation	47,737			45,930			28,627
Occupancy	10,600			10,745			7,595
Data processing	4,308			4,050			2,540
Other professional services	3,221			3,181			1,523
Insurance and assessments	3,025			3,115			1,593
Intangible asset amortization	1,501			1,619			1,364
Leased equipment depreciation	3,103			3,103			—
Foreclosed assets expense (income), net	336			1,938			(1,861		)
Acquisition, integration and reorganization costs	2,000			7,381			2,200
Other expense	8,529			10,243			6,583
Total noninterest expense	84,360			91,305			50,164
Earnings from continuing operations before taxes	119,152			114,318			41,186
Income tax expense	(46,073		)	(43,261		)	(15,281		)
Net earnings from continuing operations	73,079			71,057			25,905
Loss from discontinued operations before taxes	—			(105		)	(1,413		)
Income tax benefit	—			47			588
Net loss from discontinued operations	—			(58		)	(825		)
Net earnings	$	73,079		$	70,999		$	25,080
Basic earnings per share:
Net earnings from continuing operations	$	0.71		$	0.69		$	0.57
Net earnings	$	0.71		$	0.69		$	0.55
Diluted earnings per share:
Net earnings from continuing operations	$	0.71		$	0.69		$	0.57
Net earnings	$	0.71		$	0.69		$	0.55
Dividends declared per share	$	0.50		$	0.50		$	0.25

See Notes to Condensed Consolidated Financial Statements.

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PACWEST BANCORP AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

	Three Months Ended
	March 31, 2015			December 31, 2014			March 31, 2014
	(Unaudited)
	(In thousands)
Net earnings	$	73,079		$	70,999		$	25,080
Other comprehensive income, net of tax:
Unrealized holding gains on securities available-for-sale	7,363			9,523			22,291
Income tax expense related to unrealized holding gains arising during the period	(3,105		)	(3,964		)	(9,363		)
Unrealized holding gains on securities available-for-sale, net of tax	4,258			5,559			12,928
Reclassification adjustment for gains included in net earnings (1)	(3,275		)	—			(4,752		)
Income tax expense related to reclassification adjustment	1,381			—			1,996
Reclassification adjustment for gains included in net earnings, net of tax	(1,894		)	—			(2,756		)
Other comprehensive income, net of tax	2,364			5,559			10,172
Comprehensive income	$	75,443		$	76,558		$	35,252

^{___________________________________} 

(1) Entire amounts are recognized in "Gain on securities" on the Condensed Consolidated Statements of Earnings.

See Notes to Condensed Consolidated Financial Statements.

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PACWEST BANCORP AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY

	Three Months Ended March 31, 2015
	Common Stock
	Shares	Par Value		Additional Paid-in Capital			Accumulated Deficit			Treasury Stock			Accumulated Other Comprehensive Income		Total
	(Unaudited)
	(Dollars in thousands, except share data)
Balance, December 31, 2014	103,022,017	1,042		3,807,167			(285,712		)	(42,647		)	26,380		3,506,230
Net earnings	—	—		—			73,079			—			—		73,079
Other comprehensive income - net unrealized gain on securities available-for-sale, net of tax	—	—		—			—			—			2,364		2,364
Restricted stock awarded and earned stock compensation, net of shares forfeited	20,940	—		3,112			—			—			—		3,112
Dividend reinvestment	1,300	—		58			—			—			—		58
Cash dividends paid	—	—		(51,482		)	—			—			—		(51,482		)
Balance, March 31, 2015	103,044,257	$	1,042	$	3,758,855		$	(212,633	)	$	(42,647	)	$	28,744	$	3,533,361

See Notes to Condensed Consolidated Financial Statements.

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PACWEST BANCORP AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

	Three Months Ended March 31,
	2015			2014
	(Unaudited)
	(Dollars in thousands)
Cash flows from operating activities:
Net earnings	$	73,079		$	25,080
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	10,648			6,653
Provision (negative provision) for credit losses	16,434			(644		)
Loss (gain) on sale of foreclosed assets	106			(2,323		)
Provision for losses on foreclosed assets	124			94
Gain on sale of loans and leases	—			(106		)
Gain on sale of premises and equipment	(3		)	(1,571		)
Gain on sale of securities	(3,275		)	(4,752		)
Unrealized gain on derivatives and foreign currencies, net	(2,715		)	—
Earned stock compensation	3,112			1,611
Tax effect included in stockholders' equity of restricted stock vesting	—			(1,110		)
Increase in accrued and deferred income taxes, net	38,722			19,679
Decrease in other assets	19,356			4,740
Decrease in accrued interest payable and other liabilities	(29,102		)	(20,107		)
Net cash provided by operating activities	126,486			27,244
Cash flows from investing activities:
Net (increase) decrease in loan and leases	(403,438		)	149,440
Proceeds from sale of loans and leases	—			1,128
Securities available-for-sale:
Proceeds from maturities and paydowns	27,547			33,860
Proceeds from sales	144,945			142,041
Purchases	(196,568		)	(140,048		)
Net redemptions of Federal Home Loan Bank stock	11,704			2,939
Proceeds from sales of foreclosed assets	7,945			7,209
Purchases of premises and equipment, net	(1,490		)	(1,115		)
Proceeds from sales of premises and equipment	29			3,753
Net cash (used in) provided by investing activities	(409,326		)	199,207
Cash flows from financing activities:
Net increase in deposits:
Noninterest-bearing	97,224			73,163
Interest-bearing	80,914			15,258
Net increase (decrease) in borrowings	234,754			(107,953		)
Restricted stock surrendered	—			(2,058		)
Tax effect included in stockholders' equity of restricted vesting stock	—			1,110
Cash dividends paid	(51,424		)	(11,306		)
Net cash provided by (used in) financing activities	361,468			(31,786		)
Net increase in cash and cash equivalents	78,628			194,665
Cash and cash equivalents at beginning of period	313,226			147,422
Cash and cash equivalents at end of period	$	391,854		$	342,087
Supplemental disclosures of cash flow information:
Cash paid for interest	$	12,334		$	2,483
Cash received for income taxes	(7,695		)	(5,693		)
Loans transferred to foreclosed assets	394			13

See Notes to Condensed Consolidated Financial Statements.

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PACWEST BANCORP AND SUBSIDIARIES

Notes to Condensed Consolidated Financial Statements (Unaudited)

Note 1.  Organization    

PacWest Bancorp is a bank holding company registered under the Bank Holding Company Act of 1956, as amended. Our principal business is to serve as the holding company for our Los Angeles‑based wholly owned banking subsidiary, Pacific Western Bank, which we refer to as “Pacific Western” or the “Bank.” When we say “we,” “our,” or the “Company,” we mean PacWest Bancorp together with its subsidiaries on a consolidated basis. When we refer to “PacWest” or to the holding company, we are referring to PacWest Bancorp, the parent company, on a stand‑alone basis. As of March 31, 2015, we had total assets of $16.6 billion, gross loans and leases of $12.3 billion, total deposits of $11.9 billion and total stockholders' equity of $3.5 billion.

Pacific Western is a full-service commercial bank offering a broad range of banking products and services including accepting demand, money market, and time deposits and originating loans and leases, including an array of commercial real estate loans and commercial lending products. The Bank strives to attract locally generated and relationship-based deposits, with 80 full-service branches located primarily in Southern California, extending from San Diego County to California’s Central Coast. The Bank also operates three banking offices in the San Francisco Bay area and four banking offices in the Central Valley. Our targeted collateral for real estate loan offerings includes healthcare properties, office properties, industrial properties, multifamily properties, hospitality properties, and retail properties. Our commercial loan products include equipment loans and leases, asset-based loans, loans to finance companies, and loans secured by borrower future cash flows.

As a result of the CapitalSource Inc. merger, Pacific Western Bank established the CapitalSource Division, which we also refer to as the National Lending segment. The CapitalSource Division lends throughout the United States, providing middle-market businesses asset-secured loans, equipment-secured loans and leases, and cash flow loans and providing real estate loans secured by various property types. The Bank's leasing operation, Pacific Western Equipment Finance, and its group specializing in asset-based lending, CapitalSource Business Finance Group (formerly BFI Business Finance and First Community Financial), are part of the CapitalSource Division. The CapitalSource Division’s loan and lease origination efforts are conducted through offices located in Chevy Chase, Maryland; Los Angeles and San Jose, California; St. Louis, Missouri; Denver, Colorado; Chicago, Illinois; New York, New York; and Midvale, Utah. When we refer to "CapitalSource Inc." we are referring to the company acquired on April 7, 2014 and when we refer to the "CapitalSource Division" we are referring to a division of the Bank that specializes in middle-market lending on a nationwide basis.

We generate our revenue primarily from interest received on loans and leases and, to a lesser extent, from interest received on investment securities, and fees received in connection with deposit services, extending credit and other services offered, including foreign exchange services. Our major operating expenses include interest paid by the Bank on deposits and borrowings, compensation and general operating expenses.

We have completed 27 acquisitions from May 2000 through March 31, 2015, including the acquisition of CapitalSource Inc. Since 2000, our acquisitions have been accounted for using the acquisition method of accounting and, accordingly, the operating results of the acquired entities have been included in the consolidated financial statements from their respective acquisition dates. See Note 3, Acquisitions, for more information about the CapitalSource Inc. merger.

Square 1 Financial, Inc. Merger Announcement

On March 2, 2015, PacWest announced the signing of an agreement and plan of merger (the “Agreement”) whereby PacWest and Square 1 Financial, Inc. (“Square 1”) will merge in a transaction valued at approximately $849 million. The surviving company will be PacWest Bancorp and the surviving subsidiary bank will be Pacific Western Bank. The Square 1 lending operations will continue to do business under the name Square 1 as a division of Pacific Western Bank.

Under the terms of the Agreement, Square 1 stockholders will receive 0.5997 shares of PacWest common stock for each share of Square 1 common stock. The total value of the per share merger consideration is $27.49, based on the $45.84 closing price of PacWest common stock on February 27, 2015, the last trading day before the transaction was announced.

As of December 31, 2014, on a pro forma consolidated basis, after giving effect to the Square 1 merger, the Company would have had approximately $19.8 billion in assets with 80 branches throughout California and one branch in North Carolina.

The transaction, currently expected to close in the fourth quarter of 2015, is subject to customary conditions, including the approval of bank regulatory authorities and the Square 1 stockholders.

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PACWEST BANCORP AND SUBSIDIARIES

Notes to Condensed Consolidated Financial Statements (Unaudited)

Significant Accounting Policies

Except as discussed below, our accounting policies are described in Note 1, Nature of Operations and Summary of Significant Accounting Policies, of our audited consolidated financial statements included in our Annual Report on Form 10-K for the year ended December 31, 2014 as filed with the Securities and Exchange Commission ("Form 10-K").

Accounting Standard Adopted in 2015

Effective January 1, 2015, the Company adopted new accounting guidance for investments in affordable housing projects that qualify for the low-income housing tax credit. As a result of the adoption of this new guidance, the Company made an accounting policy election to amortize the initial cost of its qualifying investments in proportion to the tax credits and other benefits received and to present the amortization as a component of income tax expense, referred to as the proportional amortization method. Previously, investments in low-income housing tax credits were accounted for under the equity method and such amortization was presented in other expense. The guidance was required to be applied retrospectively and accordingly, prior period amounts for other expense and tax expense have been revised to conform with the current period presentation. The revised amortization amounts for prior periods were not material.

The retrospective application of the adoption of the new accounting guidance for the proportional amortization method resulted in a cumulative effect on retained earnings of a reduction of $195,000.

Basis of Presentation

Our interim consolidated financial statements are prepared in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”) for interim financial information and pursuant to the requirements for reporting on Form 10-Q and Article 10 of Regulation S-X of the Securities Exchange Act of 1934. Accordingly, certain disclosures accompanying annual consolidated financial statements are omitted. In the opinion of management, all adjustments and eliminations, consisting solely of normal recurring accruals, considered necessary for the fair presentation of financial statements for the interim periods, have been included. The current period's results of operations are not necessarily indicative of the results that ultimately may be achieved for the year. The interim consolidated financial statements and notes thereto should be read in conjunction with the audited consolidated financial statements and notes thereto included in our Form 10-K.

The accompanying financial statements reflect our consolidated accounts. All significant intercompany accounts and transactions have been eliminated.

Use of Estimates

We have made a number of estimates and assumptions relating to the reporting of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements and the reported amounts of revenue and expenses during the reporting period to prepare these condensed consolidated financial statements in conformity with U.S. GAAP. Material estimates subject to change in the near term include, among other items, the allowance for credit losses, the carrying value and useful lives of intangible assets, the carrying value of the FDIC loss sharing asset, the realization of deferred tax assets, and the fair value estimates of assets acquired and liabilities assumed in acquisitions. These estimates may be adjusted as more current information becomes available, and any adjustment may be significant.

As described in Note 3, Acquisitions, the acquired assets and liabilities of CapitalSource Inc. were measured at their estimated fair values. We made significant estimates and exercised significant judgment in estimating fair values and accounting for such acquired assets and assumed liabilities.

Reclassifications

Certain prior period amounts have been reclassified to conform to the current period's presentation format. On the statements of earnings, the "Other expense" category includes loan-related legal expenses which were previously reported within the "Other professional services" category. On the balance sheets, the "Other assets" category includes "FDIC loss sharing asset," which was previously reported as a separate category. These reclassifications did not affect previously reported net earnings.

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PACWEST BANCORP AND SUBSIDIARIES

Notes to Condensed Consolidated Financial Statements (Unaudited)

Note 2.  Discontinued Operations    

Discontinued operations include the income and expense related to Electronic Payment Services ("EPS"), a discontinued division of the Bank acquired in connection with the First California Financial Group, Inc. ("FCAL") acquisition. Liabilities of the EPS division were $20.4 million and $21.3 million at March 31, 2015 and December 31, 2014, and consisted primarily of noninterest‑bearing deposits, and are included in the condensed consolidated balance sheets under the caption “Accrued interest payable and other liabilities.” For segment reporting purposes, the EPS division is included in our Community Banking segment.

Note 3.  Acquisitions    

The following assets acquired and liabilities assumed of CapitalSource Inc. are presented at estimated fair value as of its acquisition date:

	Acquisition and Date Acquired
	CapitalSource Inc.
	April 7, 2014
	(In thousands)
Assets Acquired:
Cash and due from banks	$	768,553
Interest‑earning deposits in financial institutions	60,612
Investment securities available‑for‑sale	382,797
FHLB stock	46,060
Loans and leases	6,877,427
Equipment leased to others under operating leases	160,015
Premises and equipment	12,663
Foreclosed assets	6,382
Income tax assets	304,856
Goodwill	1,526,282
Core deposit and customer relationship intangibles	6,720
Other assets(1)	582,985
Total assets acquired	$	10,735,352
Liabilities Assumed:
Noninterest‑bearing deposits	$	4,631
Interest‑bearing deposits	6,236,419
Other borrowings	992,109
Subordinated debentures	300,918
Accrued interest payable and other liabilities	124,087
Total liabilities assumed	$	7,658,164
Total consideration paid	$	3,077,188
Summary of consideration:
Cash paid	$	483,118
PacWest common stock issued	2,594,070
Total	$	3,077,188

___________________

(1) Includes a $484 million receivable for securities sales proceeds.

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PACWEST BANCORP AND SUBSIDIARIES

Notes to Condensed Consolidated Financial Statements (Unaudited)

CapitalSource Inc. Merger

We acquired CapitalSource Inc. on April 7, 2014. As part of the merger, CapitalSource Bank (“CSB”), a wholly owned subsidiary of CapitalSource Inc., merged with and into Pacific Western Bank. We completed the merger in order to augment our loan and lease generation capabilities and to diversify our loan portfolio.

At closing, we created the CapitalSource Division of the Bank. The CapitalSource Division provides a full spectrum of financing solutions across numerous industries and property types to middle market businesses nationwide. When we refer to "CapitalSource Inc." we are referring to the company acquired on April 7, 2014 and when we refer to the "CapitalSource Division" we are referring to a division of the Bank that lends throughout the United States, providing middle-market businesses asset-secured loans, equipment-secured loans and leases, and cash flow loans and providing real estate loans secured by various property types.

The CapitalSource Inc. merger has been accounted for under the acquisition method of accounting. The assets and liabilities, both tangible and intangible, were recorded at their estimated fair values as of the merger date. We made significant estimates and exercised significant judgment in estimating fair values and accounting for such acquired assets and liabilities. The application of the acquisition method of accounting resulted in goodwill of $1.5 billion. All of the recognized goodwill was non‑deductible for tax purposes.

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PACWEST BANCORP AND SUBSIDIARIES

Notes to Condensed Consolidated Financial Statements (Unaudited)

Note 4.  Goodwill and Other Intangible Assets

Goodwill arises from the acquisition method of accounting for business combinations and represents the excess of the purchase price over the fair value of the net assets and other identifiable intangible assets acquired. Our intangible assets with definite lives are core deposit intangibles ("CDI") and customer relationship intangibles ("CRI"). In the first quarter of 2015, we finalized the estimated fair value of the deferred tax assets acquired in the CapitalSource Inc. merger which resulted in a $7.9 million decrease with a corresponding adjustment to increase goodwill.

Goodwill and other intangible assets deemed to have indefinite lives generated from purchase business combinations are not subject to amortization and are instead tested for impairment no less than annually. Impairment exists when the carrying value of goodwill exceeds its implied fair value. An impairment loss would be recognized in an amount equal to that excess and would be included in “Noninterest expense” in the condensed consolidated statements of earnings.

CDI and CRI are amortized over their respective estimated useful lives and reviewed for impairment at least quarterly. The amortization expense represents the estimated decline in the value of the underlying deposits or loan and lease customers acquired. The weighted average amortization period remaining for all of our CDI and CRI is 4.3 years. The aggregate CDI and CRI amortization expense is expected to be $6.0 million for 2015. The estimated aggregate amortization expense related to these intangible assets for each of the next five years is $4.1 million for 2016, $2.3 million for 2017, $2.0 million for 2018, $1.7 million for 2019, and $953,000 for 2020.

The following table presents the changes in the carrying amount of goodwill for the period indicated:    

	Goodwill
	(In thousands)
Balance, December 31, 2014	$	1,720,479
To adjust acquired CapitalSource Inc. deferred tax assets	7,901
Balance, March 31, 2015	$	1,728,380

The following table presents the changes in CDI and CRI and the related accumulated amortization for the periods indicated:

	Three Months Ended
	March 31,			December 31,			March 31,
	2015			2014			2014
	(In thousands)
Gross Amount of CDI and CRI:
Balance, end of period	$	53,090		$	53,090		$	48,963
Accumulated Amortization:
Balance, beginning of period	(35,886		)	(34,267		)	(31,715		)
Amortization	(1,501		)	(1,619		)	(1,364		)
Balance, end of period	(37,387		)	(35,886		)	(33,079		)
Net CDI and CRI, end of period	$	15,703		$	17,204		$	15,884

12

PACWEST BANCORP AND SUBSIDIARIES

Notes to Condensed Consolidated Financial Statements (Unaudited)

Note 5. Investment Securities     

Securities Available-for-Sale

The following table presents amortized cost, gross unrealized gains and losses, and carrying values of securities available-for-sale as of the dates indicated:

	March 31, 2015									December 31, 2014
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value		Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	(In thousands)
Residential mortgage-backed securities:
Government agency and
government-sponsored enterprise
pass-through securities	$	439,696	$	19,327	$	(131	)	$	458,892	$	515,902	$	20,142	$	(372	)	$	535,672
Government agency and
government-sponsored enterprise
collateralized mortgage obligations	269,766		6,909		(451		)	276,224		275,513		3,513		(1,080		)	277,946
Covered private label collateralized
mortgage obligations	26,496		7,014		(66		)	33,444		26,889		7,153		(95		)	33,947
Other private label collateralized
mortgage obligations	9,645		52		(47		)	9,650		10,961		46		(93		)	10,914
Municipal securities	579,344		15,708		(2,199		)	592,853		521,499		15,899		(1,282		)	536,116
Corporate debt securities	47,485		683		(423		)	47,745		110,074		597		(562		)	110,109
Collateralized loan obligations	112,883		922		—			113,805		—		—		—			—
Government-sponsored enterprise debt
securities	36,249		1,156		—			37,405		36,232		525		—			36,757
Other securities	25,451		34		(94		)	25,391		25,801		33		(118		)	25,716
Total	$	1,547,015	$	51,805	$	(3,411	)	$	1,595,409	$	1,522,871	$	47,908	$	(3,602	)	$	1,567,177

Other securities consist primarily of asset‑backed securities. See Note 11, Fair Value Measurements, for information on fair value measurements and methodology.

As of March 31, 2015, securities available‑for‑sale with a carrying value of $354.7 million were pledged as collateral for borrowings, public deposits and other purposes as required by various statutes and agreements.

During the three months endedMarch 31, 2015 and 2014, we purchased $196.6 million and $140.0 million in securities available-for-sale.

During the three months endedMarch 31, 2015, we sold $13.9 million of Texas municipal securities for an $883,000 gain, $67.5 million in corporate debt securities for a realized loss of $232,000 and $60.3 million in government agency and government-sponsored enterprise ("GSE") pass-through securities for a realized gross gain of $2.6 million. These securities were sold as part of our investment portfolio risk management activities. During the three months endedMarch 31, 2014, we sold $137.3 million in GSE pass through securities for which we realized a gross gain of $4.8 million. These securities were sold to take advantage of favorable market conditions for premium coupon seasoned GSE pass through securities. We redeployed the proceeds into single-maturity investments that were expected to perform better under the current market conditions. 

Realized gains or losses resulting from the sale of securities are calculated using the specific identification method and included in gain on securities. During the three months endedMarch 31, 2015 and 2014, we had $4.3 million and $12.9 million of net unrealized after-tax gains as a component of accumulated other comprehensive income.

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PACWEST BANCORP AND SUBSIDIARIES

Notes to Condensed Consolidated Financial Statements (Unaudited)

Unrealized Losses on Securities Available-for-Sale

The following tables present the gross unrealized losses and fair values of securities available-for-sale that were in unrealized loss positions, for which other-than-temporary impairments have not been recognized in earnings, as of the dates indicated:

	March 31, 2015
	Less Than 12 Months					12 Months or More					Total
	Fair Value		Gross Unrealized Losses			Fair Value		Gross Unrealized Losses			Fair Value		Gross Unrealized Losses
	(In thousands)
Residential mortgage-backed securities:
Government agency and government-
sponsored enterprise pass-through
securities	$	5,031	$	(42	)	$	10,085	$	(89	)	$	15,116	$	(131	)
Government agency and government-
sponsored enterprise collateralized
mortgage obligations	—		—			14,403		(451		)	14,403		(451		)
Covered private label collateralized
mortgage obligations	726		(6		)	643		(60		)	1,369		(66		)
Other private label collateralized
mortgage obligations	1,206		(46		)	360		(1		)	1,566		(47		)
Municipal securities	112,361		(1,277		)	38,687		(922		)	151,048		(2,199		)
Corporate debt securities	25,104		(423		)	—		—			25,104		(423		)
Other securities	6,453		(72		)	10,020		(22		)	16,473		(94		)
Total	$	150,881	$	(1,866	)	$	74,198	$	(1,545	)	$	225,079	$	(3,411	)

	December 31, 2014
	Less Than 12 Months					12 Months or More					Total
	Fair Value		Gross Unrealized Losses			Fair Value		Gross Unrealized Losses			Fair Value		Gross Unrealized Losses
	(In thousands)
Residential mortgage-backed securities:
Government agency and government-
sponsored enterprise pass-through
securities	$	10,711	$	(13	)	$	27,100	$	(359	)	$	37,811	$	(372	)
Government agency and government-
sponsored enterprise collateralized
mortgage obligations	23,908		(73		)	40,652		(1,007		)	64,560		(1,080		)
Covered private label collateralized
mortgage obligations	—		—			1,000		(95		)	1,000		(95		)
Other private label collateralized
mortgage obligations	1,618		(93		)	—		—			1,618		(93		)
Municipal securities	11,854		(66		)	84,822		(1,216		)	96,676		(1,282		)
Corporate debt securities	52,071		(547		)	10,131		(15		)	62,202		(562		)
Other securities	6,440		(90		)	10,019		(28		)	16,459		(118		)
Total	$	106,602	$	(882	)	$	173,724	$	(2,720	)	$	280,326	$	(3,602	)

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PACWEST BANCORP AND SUBSIDIARIES

Notes to Condensed Consolidated Financial Statements (Unaudited)

We reviewed the securities that were in a loss position at March 31, 2015, and concluded their losses were a result of the level of market interest rates relative to the types of securities and pricing changes caused by shifting supply and demand dynamics and not a result of downgraded credit ratings or other indicators of deterioration of the underlying issuers' ability to repay. Accordingly, we determined the securities were temporarily impaired and we did not recognize such impairment in the condensed consolidated statements of earnings. We occasionally sell securities for risk management purposes to reduce risks related to price volatility and duration. We do not foresee having to sell these securities strictly for liquidity needs and believe that it is more likely than not we would not be required to sell these securities before recovery of their amortized cost.

Contractual Maturities

The following table presents the contractual maturities of our available-for-sale securities portfolio based on amortized cost and carrying value as of the date indicated:

	March 31, 2015
	Amortized Cost		Estimated Fair Value
	(In thousands)
Due in one year or less	$	18,358	$	18,538
Due after one year through five years	76,173		76,515
Due after five years through ten years	276,933		287,023
Due after ten years	1,175,551		1,213,333
Total securities available-for-sale	$	1,547,015	$	1,595,409

Mortgage-backed securities have contractual terms to maturity, but require periodic payments to reduce principal. In addition, expected maturities may differ from contractual maturities because obligors and/or issuers may have the right to call or prepay obligations with or without call or prepayment penalties.

FHLB Stock

At March 31, 2015, we had a $28.9 million investment in Federal Home Loan Bank of San Francisco ("FHLB") stock carried at cost. During the three months endedMarch 31, 2015, FHLB stock declined $11.7 million due primarily to $15.6 million in redemptions, offset partially by $3.9 million in purchases. We evaluated the carrying value of our FHLB stock investment at March 31, 2015, and determined that it was not impaired. Our evaluation considered the long-term nature of the investment, the current financial and liquidity position of the FHLB, repurchase activity of excess stock by the FHLB at its carrying value, the return on the investment, and our intent and ability to hold this investment for a period of time sufficient to recover our recorded investment.

Interest Income on Investment Securities

The following table presents the composition of our interest income on investment securities for the periods indicated:

	Three Months Ended
	March 31, 2015		December 31, 2014		March 31, 2014
	(In thousands)
Taxable interest	$	7,473	$	7,697	$	6,920
Non-taxable interest	3,894		3,593		3,328
Dividend income	828		915		575
Total interest income on investment securities	$	12,195	$	12,205	$	10,823

15

PACWEST BANCORP AND SUBSIDIARIES

Notes to Condensed Consolidated Financial Statements (Unaudited)

Note 6.  Loans and Leases

The Company’s loan and lease portfolio includes originated and purchased loans and leases. Originated loans and leases and purchased loans and leases for which there was no evidence of credit deterioration at their acquisition date and for which it was probable that we would be able to collect all contractually required payments, are referred to collectively as non-purchased credit impaired loans, or "Non-PCI loans." Purchased loans for which there was, at the acquisition date, evidence of credit deterioration since their origination and it was probable that we would be unable to collect all contractually required payments are referred to as purchased credit impaired loans, or "PCI loans".

Non-PCI loans are carried at the principal amount outstanding, net of deferred fees and costs, and in the case of acquired loans, net of purchase discounts and premiums. Deferred fees and costs and purchase discounts and premiums on acquired non-impaired loans are recognized as an adjustment to interest income over the contractual life of the loans using the effective interest method or taken into income when the related loans are paid off or sold.

PCI loans are accounted for in accordance with ASC Subtopic 310‑30, “Loans and Debt Securities Acquired with Deteriorated Credit Quality". For PCI loans, at the time of acquisition we (i) calculate the contractual amount and timing of undiscounted principal and interest payments (the "undiscounted contractual cash flows") and (ii) estimate the amount and timing of undiscounted expected principal and interest payments (the "undiscounted expected cash flows"). The difference between the undiscounted contractual cash flows and the undiscounted expected cash flows is the nonaccretable difference. The difference between the undiscounted cash flows expected to be collected and the estimated fair value of the acquired loans is the accretable yield. The nonaccretable difference represents an estimate of the loss exposure of principal and interest related to the PCI loan portfolio; such amount is subject to change over time based on the performance of such loans. The carrying value of PCI loans is reduced by payments received, both principal and interest, and increased by the portion of the accretable yield recognized as interest income.

The following table summarizes the composition of our loan and lease portfolio as of the dates indicated:

	March 31, 2015									December 31, 2014
	Non-PCI									Non-PCI
	Loans			PCI						Loans			PCI
	and Leases			Loans			Total			and Leases			Loans			Total
	(In thousands)
Real estate mortgage	$	5,601,937		$	226,502		$	5,828,439		$	5,350,827		$	256,489		$	5,607,316
Real estate construction	331,108			1,897			333,005			309,162			6,924			316,086
Commercial	6,021,282			25,664			6,046,946			5,852,420			27,155			5,879,575
Consumer	93,619			283			93,902			101,423			284			101,707
Total gross loans and leases	12,047,946			254,346			12,302,292			11,613,832			290,852			11,904,684
Deferred fees and costs	(30,065		)	(61		)	(30,126		)	(22,191		)	(61		)	(22,252		)
Total loans and leases, net of deferred fees	12,017,881			254,285			12,272,166			11,591,641			290,791			11,882,432
Allowance for loan and lease losses	(79,680		)	(12,698		)	(92,378		)	(70,456		)	(13,999		)	(84,455		)
Total net loans and leases	$	11,938,201		$	241,587		$	12,179,788		$	11,521,185		$	276,792		$	11,797,977

16

PACWEST BANCORP AND SUBSIDIARIES

Notes to Condensed Consolidated Financial Statements (Unaudited)

The following tables present a summary of the activity in the allowance for loan and lease losses on Non‑PCI loans and leases by portfolio segment and PCI loans for the periods indicated:

	Three Months Ended March 31, 2015
	Real Estate Mortgage			Real Estate Construction			Commercial			Consumer			Total Non-PCI			Total PCI			Total
	(In thousands)
Allowance for Loan and Lease Losses:
Balance, beginning of period	$	25,097		$	4,248		$	39,858		$	1,253		$	70,456		$	13,999		$	84,455
Charge-offs	(1,453		)	—			(8,395		)	(63		)	(9,911		)	(579		)	(10,490		)
Recoveries	1,295			632			410			194			2,531			11			2,542
Provision (negative provision)	5,972			(2,707		)	13,921			(582		)	16,604			(733		)	15,871
Balance, end of period	$	30,911		$	2,173		$	45,794		$	802		$	79,680		$	12,698		$	92,378
Amount of the allowance applicable to loans and leases:
Individually evaluated for impairment	$	1,500		$	55		$	10,493		$	178		$	12,226
Collectively evaluated for impairment	$	29,411		$	2,118		$	35,301		$	624		$	67,454
Acquired loans with deteriorated credit quality																$	12,698
Loan and Leases:
Ending balance	$	5,588,430		$	328,709		$	6,007,067		$	93,675		$	12,017,881		$	254,285		$	12,272,166
The ending balance of the loan and lease portfolio is composed of loans and leases:
Individually evaluated for impairment	$	59,733		$	8,639		$	103,208		$	3,729		$	175,309
Collectively evaluated for impairment	$	5,528,697		$	320,070		$	5,903,859		$	89,946		$	11,842,572
Acquired loans with deteriorated credit quality																$	254,285

17

PACWEST BANCORP AND SUBSIDIARIES

Notes to Condensed Consolidated Financial Statements (Unaudited)

	Three Months Ended March 31, 2014
	Real Estate Mortgage			Real Estate Construction			Commercial			Consumer			Total Non-PCI			Total PCI			Total
	(In thousands)
Allowance for loan and lease losses:
Balance, beginning of period	$	26,078		$	4,298		$	26,921		$	2,944		$	60,241		$	21,793		$	82,034
Charge-offs	(94		)	—			(1,441		)	(15		)	(1,550		)	—			(1,550		)
Recoveries	261			24			377			27			689			51			740
Provision (negative provision)	(1,893		)	(219		)	1,883			829			600			(644		)	(44		)
Balance, end of period	$	24,352		$	4,103		$	27,740		$	3,785		$	59,980		$	21,200		$	81,180
Amount of the allowance applicable to loans and leases:
Individually evaluated for impairment	$	2,690		$	251		$	5,337		$	387		$	8,665
Collectively evaluated for impairment	$	21,662		$	3,852		$	22,403		$	3,398		$	51,315
Acquired loans with deteriorated credit quality																$	21,200
Loan and Leases:
Ending balance	$	2,320,554		$	240,073		$	1,201,142		$	66,782		$	3,828,551		$	332,516		$	4,161,067
The ending balance of the loan and lease portfolio is composed of loans and leases:
Individually evaluated for impairment	$	58,532		$	12,926		$	17,792		$	3,972		$	93,222
Collectively evaluated for impairment	$	2,262,022		$	227,147		$	1,183,350		$	62,810		$	3,735,329
Acquired loans with deteriorated credit quality																$	332,516

18

PACWEST BANCORP AND SUBSIDIARIES

Notes to Condensed Consolidated Financial Statements (Unaudited)

Non‑Purchased Credit Impaired (Non‑PCI) Loans and Leases

The following table presents the credit risk rating categories for Non‑PCI loans and leases by portfolio segment and class as of the dates indicated. Nonclassified loans and leases are those with a credit risk rating of either pass or special mention, while classified loans and leases are those with a credit risk rating of either substandard or doubtful.

	March 31, 2015						December 31, 2014
	Classified		Nonclassified		Total		Classified		Nonclassified		Total
	(In thousands)
Real estate mortgage:
Hospitality	$	16,928	$	595,161	$	612,089	$	17,761	$	542,458	$	560,219
SBA	10,919		377,857		388,776		11,141		364,786		375,927
Other	69,859		4,517,706		4,587,565		68,084		4,336,330		4,404,414
Total real estate mortgage	97,706		5,490,724		5,588,430		96,986		5,243,574		5,340,560
Real estate construction:
Residential	398		121,918		122,316		402		96,326		96,728
Commercial	1,456		204,937		206,393		3,346		207,061		210,407
Total real estate construction	1,854		326,855		328,709		3,748		303,387		307,135
Commercial:
Collateralized	21,265		373,123		394,388		22,433		416,754		439,187
Unsecured	1,267		142,047		143,314		1,323		130,501		131,824
Asset-based	11,304		1,708,473		1,719,777		11,547		1,783,304		1,794,851
Cash flow	105,763		2,687,421		2,793,184		83,321		2,376,530		2,459,851
Equipment finance	86,938		827,078		914,016		15,973		953,516		969,489
SBA	3,128		39,260		42,388		3,207		44,054		47,261
Total commercial	229,665		5,777,402		6,007,067		137,804		5,704,659		5,842,463
Consumer	3,957		89,718		93,675		4,073		97,410		101,483
Total Non-PCI loans and leases	$	333,182	$	11,684,699	$	12,017,881	$	242,611	$	11,349,030	$	11,591,641

In addition to our internal risk rating process, our federal and state banking regulators, as an integral part of their examination process, periodically review the Company’s loan and lease risk rating classifications. Our regulators may require the Company to recognize rating downgrades based on their judgments related to information available to them at the time of their examinations. Risk rating downgrades generally result in higher allowances for credit losses.

19

PACWEST BANCORP AND SUBSIDIARIES

Notes to Condensed Consolidated Financial Statements (Unaudited)

The following tables present an aging analysis of our Non‑PCI loans and leases by portfolio segment and class as of the dates indicated:

	March 31, 2015
	30-89 Days Past Due		90 or More  Days Past Due		Total Past Due		Current		Total
	(In thousands)
Real estate mortgage:
Hospitality	$	—	$	—	$	—	$	612,089	$	612,089
SBA	5,582		5,487		11,069		377,707		388,776
Other	6,234		5,319		11,553		4,576,012		4,587,565
Total real estate mortgage	11,816		10,806		22,622		5,565,808		5,588,430
Real estate construction:
Residential	—		—		—		122,316		122,316
Commercial	—		—		—		206,393		206,393
Total real estate construction	—		—		—		328,709		328,709
Commercial:
Collateralized	1,782		424		2,206		392,182		394,388
Unsecured	—		16		16		143,298		143,314
Asset-based	—		—		—		1,719,777		1,719,777
Cash flow	—		—		—		2,793,184		2,793,184
Equipment finance	23,409		—		23,409		890,607		914,016
SBA	788		1,362		2,150		40,238		42,388
Total commercial	25,979		1,802		27,781		5,979,286		6,007,067
Consumer	9		3,196		3,205		90,470		93,675
Total Non-PCI loans and leases	$	37,804	$	15,804	$	53,608	$	11,964,273	$	12,017,881

20

PACWEST BANCORP AND SUBSIDIARIES

Notes to Condensed Consolidated Financial Statements (Unaudited)

	December 31, 2014
	30-89 Days Past Due		90 or More Days Past Due		Total Past Due		Current		Total
	(In thousands)
Real estate mortgage:
Hospitality	$	—	$	—	$	—	$	560,219	$	560,219
SBA	5,530		4,357		9,887		366,040		375,927
Other	6,098		7,630		13,728		4,390,686		4,404,414
Total real estate mortgage	11,628		11,987		23,615		5,316,945		5,340,560
Real estate construction:
Residential	—		—		—		96,728		96,728
Commercial	—		715		715		209,692		210,407
Total real estate construction	—		715		715		306,420		307,135
Commercial:
Collateralized	878		965		1,843		437,344		439,187
Unsecured	69		45		114		131,710		131,824
Asset-based	—		—		—		1,794,851		1,794,851
Cash flow	—		232		232		2,459,619		2,459,851
Equipment finance	6,525		366		6,891		962,598		969,489
SBA	205		1,362		1,567		45,694		47,261
Total commercial	7,677		2,970		10,647		5,831,816		5,842,463
Consumer	101		3,146		3,247		98,236		101,483
Total Non-PCI loans and leases	$	19,406	$	18,818	$	38,224	$	11,553,417	$	11,591,641

At March 31, 2015 and December 31, 2014, the Company had no loans and leases (excluding PCI loans) that were greater than 90 days past due and still accruing interest. It is the Company’s policy to discontinue accruing interest when principal or interest payments are past due 90 days or more unless the loan is both well secured and in the process of collection or when, in the judgment of management, there is a reasonable doubt as to the collectibility of a loan or lease in the normal course of business. Interest income on nonaccrual loans is recognized only to the extent cash is received and the principal balance of the loan is deemed collectible.

21

PACWEST BANCORP AND SUBSIDIARIES

Notes to Condensed Consolidated Financial Statements (Unaudited)

The following table presents our nonaccrual and performing Non‑PCI loans and leases by portfolio segment and class as of the dates indicated:

	March 31, 2015						December 31, 2014
	Nonaccrual		Performing		Total		Nonaccrual		Performing		Total
	(In thousands)
Real estate mortgage:
Hospitality	$	8,088	$	604,001	$	612,089	$	6,366	$	553,853	$	560,219
SBA	10,919		377,857		388,776		11,141		364,786		375,927
Other	18,328		4,569,237		4,587,565		20,105		4,384,309		4,404,414
Total real estate mortgage	37,335		5,551,095		5,588,430		37,612		5,302,948		5,340,560
Real estate construction:
Residential	379		121,937		122,316		381		96,347		96,728
Commercial	453		205,940		206,393		1,178		209,229		210,407
Total real estate construction	832		327,877		328,709		1,559		305,576		307,135
Commercial:
Collateralized	3,601		390,787		394,388		5,450		433,737		439,187
Unsecured	594		142,720		143,314		639		131,185		131,824
Asset-based	4,159		1,715,618		1,719,777		4,574		1,790,277		1,794,851
Cash flow	15,172		2,778,012		2,793,184		15,964		2,443,887		2,459,851
Equipment finance	71,039		842,977		914,016		11,131		958,358		969,489
SBA	3,128		39,260		42,388		3,207		44,054		47,261
Total commercial	97,693		5,909,374		6,007,067		40,965		5,801,498		5,842,463
Consumer	3,474		90,201		93,675		3,485		97,998		101,483
Total Non-PCI loans and leases	$	139,334	$	11,878,547	$	12,017,881	$	83,621	$	11,508,020	$	11,591,641

At March 31, 2015, nonaccrual loans and leases totaled $139.3 million. Nonaccrual loans and leases included all loans and leases 90 or more days past due of $15.8 million, $21.7 million of loans 30 to 89 days past due, and $101.8 million of current loans that were placed on nonaccrual status based on management’s judgment regarding their collectibility. Nonaccrual loans and leases totaled $83.6 million at December 31, 2014, including all loans and leases 90 or more days past due of $18.8 million, $8.7 million of loans 30 to 89 days past due, and $56.1 million of current loans that were placed on nonaccrual status based on management’s judgment regarding their collectibility. The increase in nonaccrual loans and leases generally, and equipment finance loans and leases specifically, was due to three relationships totaling $64.9 million that are related to the oil and gas industries and which have been adversely impacted by continued low oil prices.

Non‑PCI nonaccrual loans and leases and performing restructured loans are considered impaired for reporting purposes. The following table presents the composition of our impaired loans and leases as of the dates indicated:

	March 31, 2015						December 31, 2014
			Performing		Total				Performing		Total
	Nonaccrual		Restructured		Impaired		Nonaccrual		Restructured		Impaired
	Loans/Leases		Loans		Loans/Leases		Loans/Leases		Loans		Loans/Leases
	(In thousands)
Real estate mortgage	$	37,335	$	22,398	$	59,733	$	37,612	$	20,245	$	57,857
Real estate construction	832		7,807		8,639		1,559		8,996		10,555
Commercial	97,693		5,515		103,208		40,965		5,744		46,709
Consumer	3,474		255		3,729		3,485		259		3,744
Total	$	139,334	$	35,975	$	175,309	$	83,621	$	35,244	$	118,865

22

PACWEST BANCORP AND SUBSIDIARIES

Notes to Condensed Consolidated Financial Statements (Unaudited)

The following tables present information regarding our Non‑PCI impaired loans and leases by portfolio segment and class as of and for the dates indicated:

	March 31, 2015						December 31, 2014
	Recorded Investment		Unpaid Principal Balance		Related Allowance		Recorded Investment		Unpaid Principal Balance		Related Allowance
	(In thousands)
With An Allowance Recorded:
Real estate mortgage:
Hospitality	$	1,930	$	1,930	$	31	$	1,946	$	1,945	$	47
SBA	—		—		—		—		—		—
Other	12,986		13,169		1,469		9,136		9,233		646
Real estate construction:
Residential	759		759		41		763		763		46
Commercial	403		401		14		1,128		4,934		23
Commercial:
Collateralized	4,811		5,486		3,497		4,630		5,246		3,771
Unsecured	1,055		1,067		913		912		924		799
Asset-based	47		157		47		137		247		137
Cash flow	14,974		17,694		2,522		15,578		17,970		2,667
Equipment finance	9,347		9,764		3,514		6,956		7,268		2,601
SBA	—		—		—		—		—		—
Consumer	383		386		178		143		142		37
With No Related Allowance Recorded:
Real estate mortgage:
Hospitality	$	8,088	$	10,096	$	—	$	6,366	$	7,593	$	—
SBA	10,919		15,030		—		11,141		14,708		—
Other	25,810		39,548		—		29,268		40,643		—
Real estate construction:
Residential	20		19		—		21		19		—
Commercial	7,457		7,571		—		8,643		8,749		—
Commercial:
Collateralized	3,324		4,234		—		5,566		6,877		—
Unsecured	519		564		—		725		809		—
Asset-based	4,111		5,220		—		4,436		5,415		—
Cash flow	198		735		—		387		919		—
Equipment finance	61,694		67,850		—		4,175		7,528		—
SBA	3,128		4,762		—		3,207		4,920		—
Consumer	3,346		3,506		—		3,601		3,768		—
Total Non-PCI Loans and Leases With and Without an Allowance Recorded:
Real estate mortgage	$	59,733	$	79,773	$	1,500	$	57,857	$	74,122	$	693
Real estate construction	8,639		8,750		55		10,555		14,465		69
Commercial	103,208		117,533		10,493		46,709		58,123		9,975
Consumer	3,729		3,892		178		3,744		3,910		37
Total	$	175,309	$	209,948	$	12,226	$	118,865	$	150,620	$	10,774

23

PACWEST BANCORP AND SUBSIDIARIES

Notes to Condensed Consolidated Financial Statements (Unaudited)

	Three Months Ended March 31,
	2015				2014
	Weighted Average Balance(1)		Interest Income Recognized		Weighted Average Balance(1)		Interest Income Recognized
	(In thousands)
With An Allowance Recorded:
Real estate mortgage:
Hospitality	$	1,930	$	19	$	5,658	$	20
SBA	—		—		1,092		15
Other	12,783		136		16,174		119
Real estate construction:
Residential	759		4		774		4
Commercial	403		5		5		—
Commercial:
Collateralized	4,646		33		3,765		6
Unsecured	1,055		11		742		6
Asset-based	47		—		304		—
Cash flow	14,973		—		—		—
Equipment finance	4,581		—		—		—
SBA	—		—		919		10
Consumer	383		4		2,151		4
With No Related Allowance Recorded:
Real estate mortgage:
Hospitality	$	7,836	$	—	$	2,971	$	—
SBA	9,836		—		2,519		—
Other	24,219		80		23,549		63
Real estate construction:
Residential	20		—		—		—
Commercial	7,457		271		5,491		25
Commercial:
Collateralized	3,324		48		4,861		6
Unsecured	519		1		326		—
Asset-based	4,111		—		—		—
Cash flow	198		—		—		—
Equipment finance	7,537		—		220		—
SBA	3,128		45		3,132		2
Consumer	3,345		—		251		1
Total Non-PCI Loans and Leases With and Without an Allowance Recorded:
Real estate mortgage	$	56,604	$	235	$	51,963	$	217
Real estate construction	8,639		280		6,270		29
Commercial	44,119		138		14,269		30
Consumer	3,728		4		2,402		5
Total	$	113,090	$	657	$	74,904	$	281

_________________________

(1) For the loans and leases (excluding PCI loans) reported as impaired at March 31, 2015 and 2014, amounts were calculated based on the period of time such loans and leases were impaired during the reported period.

24

PACWEST BANCORP AND SUBSIDIARIES

Notes to Condensed Consolidated Financial Statements (Unaudited)

Troubled debt restructurings are a result of rate reductions, term extensions, fee concessions, and debt forgiveness or a combination thereof. The following table presents new troubled debt restructurings of Non-PCI loans for the periods indicated:

	Three Months Ended March 31, 2015					Three Months Ended March 31, 2014
Troubled Debt Restructurings:	Number of Loans	Pre- Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment		Number of Loans	Pre- Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment
	(Dollars in thousands)
Real estate mortgage:
Other	14	$	6,074	$	5,886	4	$	2,515	$	2,515
Real estate construction:
Commercial	1	2,610		2,610		2	4,927		4,927
Commercial:
Collateralized	6	1,399		1,399		4	3,287		3,287
Unsecured	1	195		195		2	38		38
Cash flow	2	566		387		—	—		—
Equipment finance	4	4,133		4,133		—	—		—
SBA	1	—		—		1	238		238
Consumer	1	91		91		1	124		124
Total	30	$	15,068	$	14,701	14	$	11,129	$	11,129

The following table presents troubled debt restructurings that subsequently defaulted for the periods indicated:

	Three Months Ended March 31,
	2015				2014
Troubled Debt Restructurings	Number of	Recorded			Number of	Recorded
That Subsequently Defaulted:	Loans	Investment(1)			Loans	Investment(1)
	(Dollars in thousands)
Real estate mortgage - Other	2	$	1,519		—	$	—
Commercial:
Collateralized	1	385			2	559
Unsecured	—	—			1	21
Asset-based	—	—			1	301
Total	3	$	1,904	(2)	4	$	881	(3)

_________________________

(1) The population of defaulted restructured loans for the period indicated includes only those loans restructured during the preceding 12-month period. The table excludes defaulted troubled restructurings in those classes for which the recorded investment was zero at the end of the period.

(2) Represents the balance at March 31, 2015, and is net of charge-offs of $772,000.

(3) Represents the balance at March 31, 2014, and there were no charge-offs.

25

PACWEST BANCORP AND SUBSIDIARIES

Notes to Condensed Consolidated Financial Statements (Unaudited)

Purchased Credit Impaired (PCI) Loans

The following table reflects the PCI loans by portfolio segment as of the dates indicated:

	March 31, 2015			December 31, 2014
	(In thousands)
Real estate mortgage	$	268,777		$	299,660
Real estate construction	2,540			7,743
Commercial	31,185			32,904
Consumer	326			332
Total gross PCI loans	302,828			340,639
Less:
Discount	(48,543		)	(49,848		)
Allowance for loan losses	(12,698		)	(13,999		)
Total net PCI loans	$	241,587		$	276,792

The following table summarizes the changes in the carrying amount of PCI loans and accretable yield on those loans for the period indicated:

	Carrying Amount			Accretable Yield
	(In thousands)
Balance, December 31, 2014	$	276,792		$	(106,856	)
Accretion	10,183			10,183
Payments received	(46,121		)	—
Increase in expected cash flows, net	—			(6,190		)
Negative provision for credit losses	733			—
Balance, March 31, 2015	$	241,587		$	(102,863	)

The following table presents PCI loans by credit risk rating categories and portfolio segment as of the dates indicated. Nonclassified loans are those with a credit risk rating of either pass or special mention, while classified loans are those with a credit risk rating of either substandard or doubtful.

	March 31, 2015						December 31, 2014
	Classified		Nonclassified		Total		Classified		Nonclassified		Total
	(In thousands)
Real estate mortgage	$	77,548	$	148,902	$	226,450	$	101,161	$	155,281	$	256,442
Real estate construction	1,888		—		1,888		3,901		3,010		6,911
Commercial	25,476		188		25,664		26,942		212		27,154
Consumer	283		—		283		284		—		284
Total PCI loans	$	105,195	$	149,090	$	254,285	$	132,288	$	158,503	$	290,791

In addition to our internal risk rating process, our federal and state banking regulators, as an integral part of their examination process, periodically review the Company’s loan risk rating classifications. Our regulators may require the Company to recognize rating downgrades based on their judgments related to information available to them at the time of their examinations.

26

PACWEST BANCORP AND SUBSIDIARIES

Notes to Condensed Consolidated Financial Statements (Unaudited)

Note 7.  Foreclosed Assets

The following table summarizes foreclosed assets at the dates indicated:

Property Type:	March 31, 2015		December 31, 2014
	(In thousands)
Commercial real estate	$	1,036	$	2,449
Construction and land development	18,942		24,759
Multi‑family	4,964		4,823
Single family residence	3,253		3,392
Total other real estate owned, net	28,195		35,423
Other foreclosed assets	7,745		8,298
Total foreclosed assets, net(1)	$	35,940	$	43,721

_________________________

(1) As of March 31, 2015 and December 31, 2014 , the amounts of covered foreclosed assets were $8.1 million and $9.3 million.

The following table presents the changes in foreclosed assets, net of the valuation allowance, for the period indicated:

	Foreclosed Assets
	(In thousands)
Balance, December 31, 2014	$	43,721
Foreclosures	394
Provision for losses	(124		)
Reductions related to sales	(8,051		)
Balance, March 31, 2015	$	35,940

Note 8.  FDIC Loss Sharing Asset

We are a party to four loss sharing agreements with the FDIC. Such agreements cover a substantial portion of losses incurred on acquired covered loans and other real estate owned. The loss sharing agreements relate to the acquisitions of: (1) Affinity Bank ("Affinity") in August 2009, (2) Los Padres Bank ("Los Padres") in August 2010, (3) Western Commercial Bank ("Western Commercial") in connection with the May 2013 FCAL acquisition, and (4) San Luis Trust Bank ("San Luis") in connection with the May 2013 First California Financial Group, Inc. ("FCAL") acquisition. Generally, under the terms of the loss sharing agreements, the FDIC is responsible for 80% of losses in connection with covered assets and is entitled to receive 80% of loss recoveries on the covered assets during the applicable contractual periods. The loss sharing provisions for the Affinity Bank non-single family covered assets expired in the third quarter of 2014; accordingly, further activity will be limited only to recoveries through the third quarter of 2017 for assets covered by this loss sharing agreement.

Both the Western Commercial and San Luis loss sharing agreements contain true-up provisions, under which we will owe the FDIC amounts at the end of the loss sharing agreements based on the performance of the covered assets. The true-up liability is included in "Accrued interest payable and other liabilities" in the condensed consolidated balance sheets.

27

PACWEST BANCORP AND SUBSIDIARIES

Notes to Condensed Consolidated Financial Statements (Unaudited)

The following table presents information about the composition of the FDIC loss sharing asset, the true‑up liability, and the non‑single family and the single family covered assets as of the date indicated:

	March 31, 2015
	Affinity Bank		Los Padres Bank		Western Commercial Bank		San Luis Trust Bank		Total
	(In thousands)
FDIC loss sharing asset	$	140	$	8,161	$	710	$	7,521	$	16,532
True‑up liability	N/A		N/A		$	1,773	$	5,517	$	7,290
Non-single family covered assets(1)	$	105,614	$	73,072	$	8,799	$	26,001	$	213,486
Single family covered assets	$	10,932	$	55,447	N/A		$	29,101	$	95,480
Loss sharing expiration dates:
Non‑single family	3rd Quarter 2014		3rd Quarter 2015		4th Quarter 2015		1st Quarter 2016
Single family	3rd Quarter 2019		3rd Quarter 2020		N/A		1st Quarter 2021
Loss recovery expiration dates:
Non‑single family	3rd Quarter 2017		3rd Quarter 2018		4th Quarter 2018		1st Quarter 2019
Single family	3rd Quarter 2019		3rd Quarter 2020		N/A		1st Quarter 2021

_________________________

(1) Excludes securities

Note 9. Borrowings, Subordinated Debentures and Brokered Deposits

Borrowings

The following table summarizes our borrowings as of the dates indicated:

	March 31, 2015				December 31, 2014
	Amount		Rate		Amount		Rate
	(Dollars in thousands)
Non‑recourse debt	$	3,156	6.34	%	$	3,402	6.43	%
FHLB overnight advances	615,000		0.24	%	380,000		0.27	%
Total borrowings	$	618,156			$	383,402

The non‑recourse debt represents the payment stream of certain equipment leases sold to third parties. The debt is secured by the equipment in the leases and all interest rates are fixed. As of March 31, 2015, this debt had a weighted average remaining maturity of 2.5 years.

PacWest has an unsecured, variable-rate revolving line of credit in the amount of $75.0 million with an expiration date of September 30, 2015. This borrowing facility provides additional available liquidity to the Company. As of March 31, 2015 and December 31, 2014, there were no balances outstanding.

The Bank has established secured and unsecured lines of credit. We may borrow funds from time to time on a term or overnight basis from the FHLB, the Federal Reserve Bank of San Francisco (“FRBSF”), or other financial institutions.

FHLB Secured Lines of Credit. The borrowing arrangement with the FHLB is based on an FHLB program collateralized by a blanket lien on certain qualifying loans in our loan portfolio which are not pledged to the FRBSF. As of March 31, 2015, our borrowing capacity under the FHLB secured borrowing lines was $2.4 billion. As of March 31, 2015 and December 31, 2014, the balances outstanding were $615.0 million and $380.0 million.

FRBSF Secured Line of Credit. The Bank has a secured line of credit with the FRBSF. As of March 31, 2015, the Bank had secured borrowing capacity of $1.5 billion collateralized by liens covering $2.1 billion of certain qualifying loans. As of March 31, 2015 and December 31, 2014, there were no balances outstanding.

28

PACWEST BANCORP AND SUBSIDIARIES

Notes to Condensed Consolidated Financial Statements (Unaudited)

Federal Funds Arrangements with Commercial Banks. As of March 31, 2015, the Bank had unsecured lines of credit of $80.0 million with correspondent banks for the purchase of overnight funds, subject to availability of funds. These lines are renewable annually and have no unused commitment fees. As of March 31, 2015 and December 31, 2014, there were no balances outstanding.

Subordinated Debentures

The following table summarizes the terms of each issuance of subordinated debentures outstanding as of the dates indicated:

	March 31, 2015					December 31, 2014
											Date	Maturity	Rate Index
Series	Amount			Rate		Amount			Rate		Issued	Date	(Quarterly Reset)
	(Dollars in thousands)
Trust V	$	10,310		3.37	%	$	10,310		3.33	%	8/15/2003	9/17/2033	3 month LIBOR + 3.10
Trust VI	10,310			3.32	%	10,310			3.29	%	9/3/2003	9/15/2033	3 month LIBOR + 3.05
Trust CII	5,155			3.22	%	5,155			3.19	%	9/17/2003	9/17/2033	3 month LIBOR + 2.95
Trust VII	61,856			3.00	%	61,856			2.98	%	2/5/2004	4/23/2034	3 month LIBOR + 2.75
Trust CIII	20,619			1.96	%	20,619			1.93	%	8/15/2005	9/15/2035	3 month LIBOR + 1.69
Trust FCCI	16,495			1.87	%	16,495			1.84	%	1/25/2007	3/15/2037	3 month LIBOR + 1.60
Trust FCBI	10,310			1.82	%	10,310			1.79	%	9/30/2005	12/15/2035	3 month LIBOR + 1.55
Trust CS 2005-1 (1)	82,475			2.22	%	82,475			2.19	%	11/21/2005	12/15/2035	3 month LIBOR + 1.95
Trust CS 2005-2 (1)	128,866			2.20	%	128,866			2.18	%	12/14/2005	1/30/2036	3 month LIBOR + 1.95
Trust CS 2006-1 (1)	51,545			2.20	%	51,545			2.18	%	2/22/2006	4/30/2036	3 month LIBOR + 1.95
Trust CS 2006-2 (1)	51,550			2.20	%	51,550			2.18	%	9/27/2006	10/30/2036	3 month LIBOR + 1.95
Trust CS 2006-3 (1)(3)	27,651			2.10	%	31,188			2.14	%	9/29/2006	10/30/2036	3 month EURIBOR + 2.05
Trust CS 2006-4 (1)	16,470			2.20	%	16,470			2.18	%	12/5/2006	1/30/2037	3 month LIBOR + 1.95
Trust CS 2006-5 (1)	6,650			2.20	%	6,650			2.18	%	12/19/2006	1/30/2037	3 month LIBOR + 1.95
Trust CS 2007-2 (1)	39,177			2.20	%	39,177			2.18	%	6/13/2007	7/30/2037	3 month LIBOR + 1.95
Gross subordinated debentures	539,439					542,976
Unamortized discount (2)	(107,991		)			(109,393		)
Net subordinated debentures	$	431,448				$	433,583

___________________

(1) Acquired in the CapitalSource Inc. merger.

(2) Amount represents the fair value adjustment on trust preferred securities assumed in the CapitalSource Inc. and FCAL acquisitions.

(3) Denomination is in Euros with a value of €25.8 million.

Interest payments made by the Company on subordinated debentures are considered dividend payments under the Board of Governors of the Federal Reserve System (“FRB”) regulations. Bank holding companies, such as PacWest, are required to notify the FRB prior to declaring and paying a dividend to stockholders during any period in which quarterly and/or cumulative twelve‑month net earnings are insufficient to fund the dividend amount, among other requirements.

Brokered Time Deposits

Brokered time deposits totaled $814.9 million and $636.7 million at March 31, 2015 and December 31, 2014. During the first quarter of 2015, the Company added $178.2 million of brokered time deposits. Brokered time deposits under the Certificate of Deposit Account Registry Service Program ("CDARS Program") totaled $46.5 million and $44.0 million at March 31, 2015 and December 31, 2014. The CDARS Program represents deposits that are participated with other FDIC‑insured financial institutions as a means to provide FDIC deposit insurance coverage for the full amount of our customers’ deposits.

29

PACWEST BANCORP AND SUBSIDIARIES

Notes to Condensed Consolidated Financial Statements (Unaudited)

Note 10. Commitments and Contingencies

Lending Commitments

The Bank is a party to financial instruments with off‑balance sheet risk in the normal course of business to meet the financing needs of its customers. These financial instruments include commitments to extend credit, standby letters of credit, and commitments to purchase equipment being acquired for lease to others. Those instruments involve, to varying degrees, elements of credit risk in excess of the amount recognized in the condensed consolidated balance sheets. The contract or notional amounts of those instruments reflect the extent of involvement the Company has in particular classes of financial instruments.

The following table presents a summary of the financial instruments described above as of the dates indicated:

	March 31, 2015		December 31, 2014
	(In thousands)
Loan commitments to extend credit	$	2,122,749	$	1,921,067
Standby letters of credit	97,540		88,495
Commitments to purchase equipment being acquired for lease to others	23,535		12,839
	$	2,243,824	$	2,022,401

Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the contract. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. Since many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements.

Standby letters of credit are conditional commitments issued by the Company to guarantee the performance of a customer to a third party. We provide standby letters of credit in conjunction with several of our lending arrangements and property lease obligations. Most guarantees expire within one year from the date of issuance. If a borrower defaults on its commitments subject to any letter of credit issued under these arrangements, we would be required to meet the borrower's financial obligation but would seek repayment of that financial obligation from the borrower. In some cases, borrowers have pledged cash and investment securities as collateral with us under these arrangements.

In addition, the Company has investments in low income housing project partnerships, which provide the Company income tax credits, and in a few small business investment companies. The investments call for capital contributions up to an amount specified in the partnership agreements. As of March 31, 2015 and December 31, 2014, the Company had commitments to contribute capital to these entities totaling $13.4 million and $11.0 million. In connection with equity investments added from the CapitalSource Inc. merger, we had commitments to contribute up to an additional $2.8 million and $2.9 million to 11 private equity funds at March 31, 2015 and December 31, 2014.

Legal Matters

In the ordinary course of our business, we are party to various legal actions, which we believe are incidental to the operation of our business. The outcome of such legal actions and the timing of ultimate resolution are inherently difficult to predict. In the opinion of management, based upon information currently available to us, any resulting liability, in addition to amounts already accrued, would not have a material adverse effect on the Company’s financial statements or operations.

30

PACWEST BANCORP AND SUBSIDIARIES

Notes to Condensed Consolidated Financial Statements (Unaudited)

Note 11.  Fair Value Measurements

ASC Topic 820, “Fair Value Measurement,” defines fair value, establishes a framework for measuring fair value including a three‑level valuation hierarchy, and expands disclosures about fair value measurements. Fair value is defined as the exchange price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date reflecting assumptions that a market participant would use when pricing an asset or liability. The hierarchy uses three levels of inputs to measure the fair value of assets and liabilities as follows:

• Level 1: Quoted prices (unadjusted) for identical assets or liabilities in active markets.

• Level 2: Observable inputs other than Level 1, including quoted prices for similar assets and liabilities in active markets, quoted prices in less active markets, or other observable inputs that can be corroborated by observable market data, either directly or indirectly, for substantially the full term of the financial instrument. This category generally includes government agency and government‑sponsored enterprise securities.

• Level 3: Inputs to a valuation methodology that are unobservable, supported by little or no market activity, and significant to the fair value measurement. These valuation methodologies generally include pricing models, discounted cash flow models, or a determination of fair value that requires significant management judgment or estimation. This category also includes observable inputs from a pricing service not corroborated by observable market data, and includes our covered private label CMOs.

We use fair value to measure certain assets and liabilities on a recurring basis, primarily securities available‑for‑sale and derivatives. For assets measured at the lower of cost or fair value, the fair value measurement criteria may or may not be met during a reporting period and such measurements are therefore considered “nonrecurring” for purposes of disclosing our fair value measurements. Fair value is used on a nonrecurring basis to adjust carrying values for impaired loans and other real estate owned and also to record impairment on certain assets, such as goodwill, core deposit intangibles, and other long‑lived assets.

The following tables present information on the assets measured and recorded at fair value on a recurring basis as of the dates indicated:

	Fair Value Measurements as of
	March 31, 2015
Measured on a Recurring Basis:	Total		Level 1		Level 2		Level 3
	(In thousands)
Securities available‑for‑sale:
Government agency and government‑sponsored enterprise
pass-through securities	$	458,892	$	—	$	458,892	$	—
Government agency and government‑sponsored enterprise
collateralized mortgage obligations	276,224		—		276,224		—
Covered private label CMOs	33,444		—		—		33,444
Other private label CMOs	9,650		—		9,650		—
Municipal securities	592,853		—		592,853		—
Corporate debt securities	47,745		—		47,745		—
Collateralized loan obligations	113,805		—		113,805		—
Government‑sponsored enterprise debt securities	37,405		—		37,405		—
Other securities	25,391		524		24,867		—
Total securities available-for-sale	1,595,409		524		1,561,441		33,444
Derivative assets	9,749		—		9,749		—
Total recurring assets	$	1,605,158	$	524	$	1,571,190	$	33,444

31

PACWEST BANCORP AND SUBSIDIARIES

Notes to Condensed Consolidated Financial Statements (Unaudited)

	Fair Value Measurements as of
	December 31, 2014
Measured on a Recurring Basis:	Total		Level 1		Level 2		Level 3
	(In thousands)
Securities available‑for‑sale:
Government agency and government‑sponsored enterprise
pass-through securities	$	535,672	$	—	$	535,672	$	—
Government agency and government‑sponsored enterprise
collateralized mortgage obligations	277,946		—		277,946		—
Covered private label CMOs	33,947		—		—		33,947
Other private label CMOs	10,914		—		10,914		—
Municipal securities	536,116		—		536,116		—
Corporate debt securities	110,109		—		110,109		—
Government‑sponsored enterprise debt securities	36,757		—		36,757		—
Other securities	25,716		519		25,197		—
Total securities available-for-sale	1,567,177		519		1,532,711		33,947
Derivative assets	5,234		—		5,234		—
Total recurring assets	$	1,572,411	$	519	$	1,537,945	$	33,947
Derivative liabilities	$	118	$	—	$	118	$	—

There were no transfers of assets either between Level 1 and Level 2 nor in or out of Level 3 of the fair value hierarchy for assets measured on a recurring basis during the three months endedMarch 31, 2015.

The following table presents information about quantitative inputs and assumptions used to determine the fair values provided by our third party pricing service for our Level 3 covered private label CMOs measured at fair value on a recurring basis as of March 31, 2015:

	Covered Private Label CMOs
Unobservable Inputs:	Range of Inputs	Weighted Average Input
Voluntary annual prepayment speeds	0% - 34.4%	5.7%
Annual default rates	0% - 42.7%	2.9%
Loss severity rates	0% - 71.2%	30.2%
Discount rates	0% - 22.6%	5.6%

The following table summarizes activity for assets measured at fair value on a recurring basis that are categorized as Level 3 for the period indicated:

	Covered Private Label CMOs
	(In thousands)
Balance, December 31, 2014	$	33,947
Total realized in earnings	154
Total unrealized loss in comprehensive income	(109		)
Net settlements	(548		)
Balance, March 31, 2015	$	33,444

32

PACWEST BANCORP AND SUBSIDIARIES

Notes to Condensed Consolidated Financial Statements (Unaudited)

The following tables present assets measured at fair value on a non‑recurring basis as of the dates indicated:

	Fair Value Measurement as of
	March 31, 2015
	Total		Level 1		Level 2		Level 3
Measured on a Non‑Recurring Basis:	(In thousands)
Impaired Non‑PCI loans	$	59,243	$	—	$	2,179	$	57,064
Other real estate owned	782		—		782		—
Total non-recurring	$	60,025	$	—	$	2,961	$	57,064

	Fair Value Measurement as of
	December 31, 2014
	Total		Level 1		Level 2		Level 3
Measured on a Non‑Recurring Basis:	(In thousands)
Impaired Non‑PCI loans	$	42,693	$	—	$	2,366	$	40,327
Other real estate owned	24,015		—		18,400		5,615
Investments carried at cost	566		—		—		566
Total non-recurring	$	67,274	$	—	$	20,766	$	46,508

The following table presents losses recognized on assets measured on a nonrecurring basis for the period indicated:

	Three Months Ended
	March 31, 2015
Loss on Assets Measured on a Non‑Recurring Basis:	(In thousands)
Impaired Non‑PCI loans	$	(9,192	)
Other real estate owned	(124		)
Total net loss	$	(9,316	)

The following table presents the valuation methodology and unobservable inputs for Level 3 assets measured at fair value on a nonrecurring basis as of March 31, 2015:

Asset	Fair Value (In thousands)		Valuation Technique	Unobservable Inputs	Range	Weighted Average
Impaired Non-PCI loans	$	32,905	Discounted cash flows	Discount rates	2.75% - 10.46%	6.73%
	24,159		Appraisals	No discounts
Total non-recurring Level 3	$	57,064

33

PACWEST BANCORP AND SUBSIDIARIES

Notes to Condensed Consolidated Financial Statements (Unaudited)

ASC Topic 825, “Financial Instruments,” requires disclosure of the estimated fair value of certain financial instruments and the methods and significant assumptions used to estimate such fair values. Additionally, certain financial instruments and all nonfinancial instruments are excluded from the applicable disclosure requirements.

The following tables present a summary of the carrying values and estimated fair values of certain financial instruments as of the dates indicated:

	March 31, 2015
	Carrying or Contract		Estimated Fair Value
	Amount		Total		Level 1		Level 2		Level 3
	(In thousands)
Financial Assets:
Cash and due from banks	$	140,873	$	140,873	$	140,873	$	—	$	—
Interest‑earning deposits in financial institutions	250,981		250,981		250,981		—		—
Securities available‑for‑sale	1,595,409		1,595,409		524		1,561,441		33,444
Investment in FHLB stock	28,905		28,905		—		28,905		—
Investments carried at cost	3,100		3,534		—		—		3,534
Investments accounted for under the equity method	21,226		21,475		—		—		21,475
Loans and leases, net	12,179,788		12,280,982		—		2,179		12,278,803
Derivative assets	9,749		9,749		—		9,749		—
Financial Liabilities:
Deposits:
Demand, money market, interest checking, and savings deposits	6,353,376		6,353,376		—		6,353,376		—
Time deposits	5,580,799		5,584,088		—		5,584,088		—
Borrowings	618,156		618,351		615,000		3,351		—
Subordinated debentures	431,448		415,210		—		415,210		—

	December 31, 2014
	Carrying or Contract		Estimated Fair Value
	Amount		Total		Level 1		Level 2		Level 3
	(In thousands)
Financial Assets:
Cash and due from banks	$	164,757	$	164,757	$	164,757	$	—	$	—
Interest‑earning deposits in financial institutions	148,469		148,469		148,469		—		—
Securities available‑for‑sale	1,567,177		1,567,177		519		1,532,711		33,947
Investment in FHLB stock	40,609		40,609		—		40,609		—
Investments carried at cost	3,691		3,691		—		—		3,691
Investments accounted for under the equity method	21,461		21,700		—		—		21,700
Loans and leases, net	11,797,977		11,757,951		—		2,366		11,755,585
Derivative assets	5,234		5,234		—		5,234		—
Financial Liabilities:
Deposits:
Demand, money market, interest checking, and savings deposits	6,256,190		6,256,190		—		6,256,190		—
Time deposits	5,498,938		5,502,479		—		5,502,479		—
Borrowings	383,402		383,539		380,000		3,539		—
Subordinated debentures	433,583		417,657		—		417,657		—
Derivative liabilities	118		118		—		118		—

34

PACWEST BANCORP AND SUBSIDIARIES

Notes to Condensed Consolidated Financial Statements (Unaudited)

The following is a description of the valuation methodologies used to measure our assets recorded at fair value (under ASC Topic 820, “Fair Value Measurement”) and for estimating fair value for financial instruments not recorded at fair value (under ASC Topic 825).

Cash and due from banks. The carrying amount is assumed to be the fair value because of the liquidity of these instruments.

Interest‑earning deposits in financial institutions. The carrying amount is assumed to be the fair value given the short‑term nature of these deposits.

Securities available‑for‑sale. Securities available‑for‑sale are measured and carried at fair value on a recurring basis. Unrealized gains and losses on available‑for‑sale securities are reported as a component of “Accumulated other comprehensive income” in the condensed consolidated balance sheets. See Note 5, Investment Securities, for further information on unrealized gains and losses on securities available‑for‑sale.

Fair value for securities categorized as Level 1, which are publicly traded securities, are based on readily available quoted prices. In determining the fair value of the securities categorized as Level 2, we obtain a report from a nationally recognized broker‑dealer detailing the fair value of each investment security we hold as of each reporting date. The broker‑dealer uses observable market information to value our securities, with the primary source being a nationally recognized pricing service. We review the market prices provided by the broker‑dealer for our securities for reasonableness based on our understanding of the marketplace and we consider any credit issues related to the securities. As we have not made any adjustments to the market quotes provided to us and they are based on observable market data, they have been categorized as Level 2 within the fair value hierarchy.

Our covered private label CMOs are categorized as Level 3 due in part to the inactive market for such securities. There is a wide range of prices quoted for private label CMOs among independent third party pricing services and this range reflects the significant judgment being exercised over the assumptions and variables that determine the pricing of such securities. We consider this subjectivity to be a significant unobservable input and have concluded that the covered private label CMOs should be categorized as a Level 3 measured asset. Our fair value estimate was based on prices provided to us by a nationally recognized pricing service which we also use to determine the fair value of the majority of our securities portfolio. We determined the reasonableness of the fair values by reviewing assumptions at the individual security level about prepayment, default expectations, estimated severity loss factors, and discount rates, all of which are not directly observable in the market. Significant changes in default expectations, severity loss factors, or discount rates, which occur in unison or in isolation, would result in different fair value measurements.

FHLB stock. Investments in FHLB stock are recorded at cost and measured for impairment quarterly. Ownership of FHLB stock is restricted to member banks and the securities do not have a readily determinable market value. Purchases and sales of these securities are at par value with the issuer. The fair value of investments in FHLB stock is equal to the carrying amount.

Non-PCI loans and leases. As Non-PCI loans and leases are not measured at fair value, the following discussion relates to estimating the fair value disclosures under ASC Topic 825. Fair values are estimated for portfolios of loans and leases with similar financial characteristics. Loans are segregated by type and further segmented into fixed and variable rate interest terms by credit risk categories. The fair value estimates do not take into consideration the value of the loan portfolio in the event the loans are sold outside the parameters of normal operating activities. The fair value of performing fixed-rate loans is estimating by discounting scheduled cash flows through the estimated maturity using estimated market prepayment speeds. The fair value of equipment leases is estimated by discounting scheduled lease and expected lease residual cash flows over their remaining term. The estimated market discount rates used for performing fixed-rate loans and equipment leases are current market rates for instruments with similar risk and similar terms. The fair value of performing variable-rate loans is estimated by discounting scheduled cash flows through the next repricing date. As these loans reprice frequently at market rates and the credit risk is not considered to be greater than normal, the market value is typically close to the carrying amount of these loans. These methods and assumptions are not based on the exit price concept of fair value.

Impaired Non‑PCI loans. Nonaccrual loans and performing restructured loans are considered impaired for reporting purposes and are measured and recorded at fair value on a non‑recurring basis. Nonaccrual Non‑PCI loans with an unpaid principal balance over $250,000 and all performing restructured loans are reviewed individually for the amount of impairment, if any. Nonaccrual Non‑PCI loans with a net book balance less than $250,000 may not be individually assessed for impairment but may instead be reserved for under the general reserve component of our allowance for credit losses.

35

PACWEST BANCORP AND SUBSIDIARIES

Notes to Condensed Consolidated Financial Statements (Unaudited)

To the extent a loan is collateral dependent, we measure such impaired loan based on the estimated fair value of the underlying collateral. The fair value of each loan’s collateral is generally based on estimated market prices from an independently prepared appraisal, which is then adjusted for the cost related to liquidating such collateral; such valuation inputs result in a nonrecurring fair value measurement that is categorized as a Level 2 measurement. The Level 2 measurement is based on appraisals obtained within the last 12 months and for which a charge‑off was recognized or a change in the specific valuation allowance was made during the three months endedMarch 31, 2015.

When adjustments are made to an appraised value to reflect various factors such as the age of the appraisal or known changes in the market or the collateral, such valuation inputs are considered unobservable and the fair value measurement is categorized as a Level 3 measurement. The impaired loans categorized as Level 3 also include unsecured loans and other secured loans whose fair values are based significantly on unobservable inputs such as the strength of a guarantor, including an SBA government guarantee, cash flows discounted at the effective loan rate, and management’s judgment.

The impaired Non‑PCI loan balances shown in the tables on page 33 as measured on a non-recurring basis represent those nonaccrual and restructured loans for which impairment was recognized during the three months endedMarch 31, 2015. The amounts shown as net losses include the impairment recognized during the three months endedMarch 31, 2015, for the loan balances shown. Of the $139.3 million of nonaccrual Non-PCI loans at March 31, 2015, $24.5 million were written down to their collateral fair values through charge‑offs during the three months endedMarch 31, 2015.

Investments that do not have readily determinable fair values. Other investments accounted for under the cost or equity methods of accounting are carried at fair value on a nonrecurring basis to the extent that they are determined to be other-than-temporarily impaired during the period. As there is rarely an observable price or market for such investments, we determine fair value using internally developed models. Our models utilize industry valuation benchmarks, such as multiples of net revenue or earnings before interest, taxes and amortization ("EBITA"), to determine a value for the underlying enterprise. We may also reduce the value determined by the model due to illiquidity or other investee-specific characteristics which may affect the fair value. Significant decreases to these valuation benchmarks would result in significant decreases in the estimated fair values. We reduce this value by the value of debt outstanding to arrive at an estimated equity value of the enterprise. When an external event such as a purchase transaction, public offering or subsequent equity sale occurs, the pricing indicated by the external event is used to corroborate our internal valuation. Fair value measurements related to these investments are typically classified within Level 3 of the fair value hierarchy.

Other real estate owned ("OREO"). The fair value of foreclosed real estate is generally based on the lower of estimated market prices from independently prepared current appraisals or executed sales contracts with buyers, less estimated costs to sell; such valuation inputs result in a fair value measurement that is categorized as a Level 2 measurement on a nonrecurring basis. As a matter of policy, appraisals are required annually and may be updated more frequently as circumstances require in the opinion of management. The Level 2 measurement for OREO is based on appraisals obtained within the last 12 months and for which a write‑down was recognized during the three months endedMarch 31, 2015.

When a current appraised value is not available or management determines the fair value of the collateral is determined to be less than the appraised value as a result of known changes in the market or the collateral and there is no observable market price, such valuation inputs result in a fair value measurement that is categorized as a Level 3 measurement. To the extent a purchase offer or reduced listing price represents a significant discount to an observable market price, such valuation input would result in a fair value measurement that is also considered a Level 3 measurement. The OREO losses disclosed are write‑downs based on either a recent appraisal obtained after foreclosure or an accepted purchase offer by an independent third party received after foreclosure.

Deposits. Deposits are carried at historical cost. The fair value of deposits with no stated maturity, such as noninterest‑bearing demand deposits, interest checking, money market, and savings accounts, is equal to the amount payable on demand as of the balance sheet date and considered Level 2. The fair value of time deposits is based on the discounted value of contractual cash flows and considered Level 2. The discount rate is estimated using the rates currently offered for deposits of similar remaining maturities. No value has been separately assigned to the Company’s long‑term relationships with its deposit customers, such as a core deposit intangible.

Borrowings. Borrowings include overnight FHLB advances and other fixed‑rate term borrowings. Borrowings are carried at amortized cost. The fair value of overnight FHLB advances is equal to the carrying value and considered Level 1. The fair value of fixed‑rate borrowings is calculated by discounting scheduled cash flows through the estimated maturity dates or call dates, if applicable, using estimated market discount rates that reflect current rates offered for borrowings with similar remaining maturities and characteristics and are considered Level 2.

36

PACWEST BANCORP AND SUBSIDIARIES

Notes to Condensed Consolidated Financial Statements (Unaudited)

Subordinated debentures. Subordinated debentures are carried at amortized cost. The fair value of subordinated debentures with variable rates is determined using a market discount rate on the expected cash flows.

Derivative assets and liabilities. Derivatives are carried at fair value on a recurring basis and primarily relate to forward exchange contracts which we enter into to manage foreign exchange risk. Our derivatives are principally traded in over-the-counter markets where quoted market prices are not readily available. Instead, the fair value of derivatives is estimated using market observable inputs such as foreign exchange forward rates, interest rate yield curves, volatilities and basis spreads. We also consider counterparty credit risk in valuing our derivatives. We typically classify our derivatives in Level 2.

Commitments to extend credit. The majority of our commitments to extend credit carry current market interest rates if converted to loans. Because these commitments are generally unassignable by either the borrower or us, they only have value to the borrower and us. The estimated fair value approximates the recorded deferred fee amounts and is excluded from the table above because it is not material.

Limitations

Fair value estimates are made at a specific point in time and are based on relevant market information and information about the financial instrument. These estimates do not reflect income taxes or any premium or discount that could result from offering for sale at one time the Company’s entire holdings of a particular financial instrument. Because no market exists for a portion of the Company’s financial instruments, fair value estimates are based on what management believes to be conservative judgments regarding expected future cash flows, current economic conditions, risk characteristics of various financial instruments, and other factors. These estimated fair values are subjective in nature and involve uncertainties and matters of significant judgment and therefore cannot be determined with precision. Changes in assumptions could significantly affect the estimates. Since the fair values have been estimated as of March 31, 2015, the amounts that will actually be realized or paid at settlement or maturity of the instruments could be significantly different.

37

PACWEST BANCORP AND SUBSIDIARIES

Notes to Condensed Consolidated Financial Statements (Unaudited)

Note 12. Earnings Per Share

The following table presents the computations of basic and diluted net earnings per share for the periods indicated:

	Three Months Ended
	March 31, 2015			December 31, 2014			March 31, 2014
	(Dollars in thousands, except per share data)
Basic earnings per share:
Net earnings from continuing operations	$	73,079		$	71,057		$	25,905
Less: earnings allocated to unvested restricted stock(1)	(819		)	(810		)	(500		)
Net earnings from continuing operations allocated to common shares	72,260			70,247			25,405
Net (loss) earnings from discontinued operations allocated to common shares	—			(57		)	(804		)
Net earnings allocated to common shares	$	72,260		$	70,190		$	24,601
Weighted-average basic shares and unvested restricted stock outstanding	103,035			103,045			45,799
Less: weighted-average unvested restricted stock outstanding	(1,122		)	(1,132		)	(1,148		)
Weighted-average basic shares outstanding	101,913			101,913			44,651
Basic earnings per share:
Net earnings from continuing operations	$	0.71		$	0.69		$	0.57
Net loss from discontinued operations	—			—			(0.02		)
Net earnings	$	0.71		$	0.69		$	0.55
Diluted earnings per share:
Net earnings from continuing operations allocated to common shares	$	72,260		$	70,247		$	25,405
Net (loss) earnings from discontinued operations allocated to common shares	—			(57		)	(804		)
Net earnings allocated to common shares	$	72,260		$	70,190		$	24,601
Weighted-average basic shares outstanding	101,913			101,913			44,651
Diluted earnings per share:
Net earnings from continuing operations	$	0.71		$	0.69		$	0.57
Net loss from discontinued operations	—			—			(0.02		)
Net earnings	$	0.71		$	0.69		$	0.55

________________________

(1) Represents cash dividends paid to holders of unvested restricted stock, net of estimated forfeitures, plus undistributed earnings amounts available to holders of unvested restricted stock, if any.

Note 13. Stock Based Compensation

The Company’s 2003 Stock Incentive Plan, or the 2003 Plan, permits stock-based compensation awards to officers, directors, key employees and consultants. As of March 31, 2015, the 2003 Plan authorized grants of stock‑based compensation instruments to purchase or issue up to 19,686,565 shares of Company common stock, subject to adjustments provided by the 2003 Plan. The authorized amount includes 10,686,565 shares that were added to the 2003 Plan as a result of the CapitalSource Inc. merger. Such shares were available for grant under the former CapitalSource Inc. Equity Incentive Plan and remain available for: (a) former employees of CapitalSource Bank who remain employed with the Company, and (b) newly hired employees of the Company. As of March 31, 2015, there were 13,510,779 shares available for grant under the 2003 Plan, of which 10,082,099 shares related to those added from the CapitalSource Inc. merger.

Restricted Stock

At March 31, 2015, there were 1,129,445 shares of unvested time‑based restricted common stock outstanding. The awarded shares of time‑based restricted common stock vest over a service period of three to four years from the date of the grant. The time-based restricted common stock vests immediately upon the death of an employee.

38

PACWEST BANCORP AND SUBSIDIARIES

Notes to Condensed Consolidated Financial Statements (Unaudited)

Compensation expense related to time‑based restricted stock awards is based on the fair value of the underlying stock on the award date and is recognized over the vesting period using the straight‑line method. Restricted stock amortization totaled $3.1 million, $2.8 million, and $1.6 million for the three months endedMarch 31, 2015, December 31, 2014 and March 31, 2014. Such amounts are included in "Compensation expense" on the accompanying condensed consolidated statements of earnings.

The amount of unrecognized compensation expense related to all unvested restricted stock as of March 31, 2015 totaled $34.6 million.

Note 14. Business Segments

The Company’s reportable segments consist of “Community Banking," “National Lending,” and “Other.” The Community Banking and National Lending segments include all of the operations of Pacific Western Bank. The Other segment consists of holding company and non-bank subsidiary operations, and intercompany eliminations.

As a result of the CapitalSource Inc. merger, the Bank established the CapitalSource Division, which we also refer to as the National Lending segment. The National Lending segment includes the lending operations gained through the CapitalSource Inc. merger, Pacific Western Equipment Finance, and the CapitalSource Business Finance Group (formerly BFI Business Finance and First Community Financial). We reorganized our asset-based lending and leasing operations when we established the CapitalSource Division.

The CapitalSource Division lends throughout the United States, providing middle-market businesses asset-secured loans, equipment-secured loans, and cash flow loans and providing real estate investment firms real estate loans secured by various property types. The CapitalSource Division’s loan and lease origination efforts are conducted through offices located in Chevy Chase, Maryland; Los Angeles and San Jose, California; Phoenix, Arizona; St. Louis, Missouri; Denver, Colorado; Chicago, Illinois; New York, New York; and Midvale, Utah.

The Community Banking segment includes the operations of Pacific Western Bank, excluding the CapitalSource Division, and includes lending and deposit gathering activities conducted primarily through its California-based branch offices and the Bank’s treasury management function and corporate overhead.

The Other segment consists of holding company operations which result in expenses principally for compensation, facilities, professional services, interest on subordinated debentures, and the non-bank subsidiary operations including interest income from a loan portfolio and related loan servicing expense.

The accounting policies of the reported segments are the same as those of the Company described in Note 1, "Nature of Operations and Summary of Significant Accounting Policies," of our Form 10-K. Transactions between segments consist primarily of borrowed funds and expense allocations for interest, deposit gathering, corporate overhead and credit loss provisions. Intersegment interest expense is allocated from the Community Banking segment to the National Lending segment based upon National Lending’s average earning assets, net of a capital allocation, and the Bank’s total cost of deposits. The Community Banking segment further allocates to the National Lending segment noninterest expense for deposit gathering and maintenance costs and the Bank’s corporate overhead. The provision for credit losses is allocated based on actual charge‑offs for the period as well as net portfolio growth and credit quality trends. All costs associated with investing the Bank’s excess liquidity and acquisition, integration and reorganization costs are housed in the Community Banking segment. Noninterest income and noninterest expense, including lending and loan servicing activity, directly attributable to a segment are assigned to such segment.

39

PACWEST BANCORP AND SUBSIDIARIES

Notes to Condensed Consolidated Financial Statements (Unaudited)

The following tables present information regarding our business segments as of and for the periods indicated:

	March 31, 2015
	Community			National						Consolidated
Balance Sheet Data:	Banking			Lending			Other			Company
	(In thousands)
Loans and leases, net of deferred fees	$	3,349,928		$	8,898,843		$	23,395		$	12,272,166
Allowance for loan and lease losses	(40,906		)	(51,472		)	—			(92,378		)
Total loans and leases, net	$	3,309,022		$	8,847,371		$	23,395		$	12,179,788
Goodwill(1)	$	333,979		$	1,394,401		$	—		$	1,728,380
Core deposit and customer relationship intangibles, net	14,918			785			—			15,703
Total assets	6,553,028			9,905,563			185,349			16,643,940
Total deposits(2)	12,252,851			35,847			(354,523		)	11,934,175

________________________

(1) The increase in goodwill for the Community Banking segment and National Lending segment compared to March 31, 2014, was due primarily to $1.5 billion from the CapitalSource Inc. merger.

(2) The negative balance for total deposits in the “Other” segment represents the elimination of holding company cash held in deposit accounts at the Bank.

	March 31, 2014
	Community			National						Consolidated
Balance Sheet Data:	Banking			Lending			Other			Company
	(In thousands)
Loans and leases, net of deferred fees	$	3,707,308		$	453,759		$	—		$	4,161,067
Allowance for loan and lease losses	(74,833		)	(6,347		)	—			(81,180		)
Total loans and leases, net	$	3,632,475		$	447,412		$	—		$	4,079,887
Goodwill	$	183,065		$	25,678		$	—		$	208,743
Core deposit and customer relationship intangibles, net	14,139			1,745			—			15,884
Total assets	5,990,162			517,126			10,565			6,517,853
Total deposits(1)	5,415,691			—			(46,283		)	5,369,408

________________________

(1) The negative balance for total deposits in the “Other” segment represents the elimination of holding company cash held in deposit accounts at the Bank.

40

PACWEST BANCORP AND SUBSIDIARIES

Notes to Condensed Consolidated Financial Statements (Unaudited)

	Three Months Ended March 31, 2015
	Community			National						Consolidated
Results of Operations:	Banking			Lending			Other			Company
	(In thousands)
Interest income	$	62,956		$	151,219		$	139		$	214,314
Interest expense	(10,661		)	(53		)	(4,525		)	(15,239		)
Intersegment interest income (expense)	6,721			(6,721		)	—			—
Net interest income (expense)	59,016			144,445			(4,386		)	199,075
Negative provision (provision) for credit losses	8,064			(24,406		)	(92		)	(16,434		)
Gain on securities	3,275			—			—			3,275
FDIC loss sharing expense	(4,399		)	—			—			(4,399		)
Other noninterest income	9,575			5,142			7,278			21,995
Total noninterest income	8,451			5,142			7,278			20,871
Foreclosed assets (expense) income, net	(44		)	(61		)	(231		)	(336		)
Intangible asset amortization	(1,389		)	(112		)	—			(1,501		)
Acquisition, integration and reorganization costs	(1,890		)	—			(110		)	(2,000		)
Other noninterest expense	(55,205		)	(22,837		)	(2,481		)	(80,523		)
Total noninterest expense	(58,528		)	(23,010		)	(2,822		)	(84,360		)
Intersegment noninterest income (expense)	26,563			(26,563		)	—			—
Total noninterest expense - adjusted	(31,965		)	(49,573		)	(2,822		)	(84,360		)
Earnings (loss) before taxes	43,566			75,608			(22		)	119,152
Income tax (expense) benefit	(16,873		)	(29,282		)	82			(46,073		)
Net earnings (loss)	$	26,693		$	46,326		$	60		$	73,079

	Three Months Ended December 31, 2014
	Community			National						Consolidated
Results of Operations:	Banking			Lending			Other			Company
	(In thousands)
Interest income	$	64,967		$	144,546		$	183		$	209,696
Interest expense	(10,069		)	(46		)	(4,598		)	(14,713		)
Intersegment interest income (expense)	6,173			(6,173		)	—			—
Net interest income (expense)	61,071			138,327			(4,415		)	194,983
Negative provision (provision) for credit losses	9,753			(11,816		)	—			(2,063		)
FDIC loss sharing expense	(4,360		)	—			—			(4,360		)
Other noninterest income	7,025			7,330			2,708			17,063
Total noninterest (expense) income	2,665			7,330			2,708			12,703
Foreclosed assets expense, net	(2,286		)	(18		)	366			(1,938		)
Intangible asset amortization	(1,507		)	(112		)	—			(1,619		)
Acquisition, integration and reorganization costs	(7,381		)	—			—			(7,381		)
Other noninterest expense	(51,605		)	(24,526		)	(4,236		)	(80,367		)
Total noninterest expense	(62,779		)	(24,656		)	(3,870		)	(91,305		)
Intersegment noninterest income (expense)	21,953			(21,953		)	—			—
Total noninterest expense - adjusted	(40,826		)	(46,609		)	(3,870		)	(91,305		)
Earnings (loss) from continuing operations before taxes	32,663			87,232			(5,577		)	114,318
Income tax (expense) benefit	(13,651		)	(34,781		)	5,171			(43,261		)
Net earnings (loss) from continuing operations	19,012			52,451			(406		)	71,057
Loss from discontinued operations before taxes	(105		)	—			—			(105		)
Income tax benefit	47			—			—			47
Net loss from discontinued operations	(58		)	—			—			(58		)
Net earnings (loss)	$	18,954		$	52,451		$	(406	)	$	70,999

41

PACWEST BANCORP AND SUBSIDIARIES

Notes to Condensed Consolidated Financial Statements (Unaudited)

	Three Months Ended March 31, 2014
	Community			National						Consolidated
Results of Operations:	Banking			Lending			Other			Company
	(In thousands)
Interest income	$	77,595		$	10,765		$	—		$	88,360
Interest Expense	(1,227		)	(77		)	(1,041		)	(2,345		)
Intersegment interest income (expense)	222			(222		)	—			—
Net interest income (expense)	76,590			10,466			(1,041		)	86,015
Negative provision (provision) for credit losses	826			(182		)	—			644
Gain on securities	4,752			—			—			4,752
FDIC loss sharing expense, net	(11,430		)	—			—			(11,430		)
Other noninterest income	6,897			4,445			27			11,369
Total noninterest income	219			4,445			27			4,691
Foreclosed assets expense, net	1,861			—			—			1,861
Intangible asset amortization	(1,191		)	(173		)	—			(1,364		)
Acquisition, integration and reorganization costs	(2,200		)	—			—			(2,200		)
Other noninterest expense	(40,285		)	(6,573		)	(1,603		)	(48,461		)
Total noninterest expense	(41,815		)	(6,746		)	(1,603		)	(50,164		)
Earnings (loss) from continuing operations before taxes	35,820			7,983			(2,617		)	41,186
Income tax (expense) benefit	(13,039		)	(3,331		)	1,089			(15,281		)
Net earnings (loss) from continuing operations	22,781			4,652			(1,528		)	25,905
Loss from discontinued operations before taxes	(1,413		)	—			—			(1,413		)
Income tax benefit	588			—			—			588
Net loss from discontinued operations	(825		)	—			—			(825		)
Net earnings (loss)	$	21,956		$	4,652		$	(1,528	)	$	25,080

Note 15.  Recently Issued Accounting Standards

In May 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2014-09, "Revenue Recognition (Topic 606): Revenue from Contracts with Customers." ASU 2014-09 will be effective for annual and interim periods beginning after December 15, 2016. Early application is not permitted. ASU 2014-09 requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. ASU 2014-09 will replace most existing revenue recognition guidance in GAAP when it becomes effective. The standard permits the use of either the retrospective or cumulative effect transition method. The Company is evaluating the effect that ASU 2014-09 will have on its financial statements and related disclosures. The Company has not yet selected a transition method nor has it determined the effect of the standard on its ongoing financial reporting.

In June 2014, the FASB issued ASU 2014-12, "Compensation-Stock Compensation (Topic 718): Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could Be Achieved after the Requisite Service Period." ASU 2014-12 will be effective for annual and interim periods beginning after December 15, 2015. ASU 2014-12 applies to all reporting entities that grant their employees share-based payments in which the terms of the award provide for a performance target that affects vesting could be achieved after the requisite service period. That is the case when an employee is eligible to retire or otherwise terminate employment before the end of the period in which a performance target (for example, an initial public offering or a profitability target) could be achieved and still be eligible to vest in the award if and when the performance target is achieved. We do not currently have outstanding performance-based awards and, as a result, ASU 2014-12 would not impact our financial statements and its related disclosures.

42

PACWEST BANCORP AND SUBSIDIARIES

Notes to Condensed Consolidated Financial Statements (Unaudited)

In August 2014, the FASB issued ASU 2014-14, "Receivables - Troubled Debt Restructuring by Creditors (Subtopic 310-40): Classification of Certain Government-Guaranteed Mortgage Loans Upon Foreclosure." ASU 2014-14 requires that a mortgage loan be derecognized and that a separate other receivable be recognized upon foreclosure if the following conditions are met: (1) the loan has a government guarantee that is not separable from the loan before foreclosure; (2) at the time of foreclosure, the creditor has the intent to convey the real estate property to the guarantor and make a claim on the guarantee, and the creditor has the ability to recover under that claim; and (3) at the time of foreclosure, any amount of the claim that is determined on the basis of the fair value of the real estate is fixed. Upon foreclosure, the separate other receivable should be measured based on the amount of the loan balance (principal and interest) expected to be recovered from the guarantor. ASU 2014-14 is effective for public business entities for reporting periods, including interim periods, beginning after December 15, 2014. ASU 2014-14 did not impact the Company's financial statements and related disclosures.

In January 2015, the FASB issued ASU 2015-01, "Income Statement - Extraordinary and Unusual Items (Subtopic 225-20): Simplifying Income Statement Presentation by Eliminating the Concept of Extraordinary Items," which eliminates the concept of extraordinary items from U.S. GAAP as part of its simplification initiative. Under ASU 2015-01, an entity will no longer separate out an extraordinary item from the results of ordinary operations and separately present this extraordinary item on its income statement, nor will related income tax and earnings-per-share data applicable to an extraordinary item need to be disclosed. Despite these simplifications, ASU 2015-01 does not affect disclosure guidance for events or transactions that are unusual in nature or infrequent in their occurrence. ASU 2015-01 is effective for annual periods beginning after December 15, 2015, and interim periods within those annual periods. The Company does not expect the effect of ASU 2015-01 to have a material impact on its financial statements and related disclosures.

In February 2015, the FASB issued ASU 2015-02, "Consolidation (Topic 810) - Amendments to the Consolidation Analysis," which changes the way reporting enterprises evaluate whether (a) they should consolidate limited partnerships and similar entities, (b) fees paid to a decision maker or service provider are variable interests in a variable interest entity (VIE), and (c) variable interests in a VIE held by related parties of the reporting enterprise require the reporting enterprise to consolidate the VIE. It also eliminates the VIE consolidation model based on majority exposure to variability that applied to certain investment companies and similar entities. ASU 2015-2 is effective for public business entities for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2015. Early adoption is permitted, including adoption in an interim period. The Company does not expect the effect of ASU 2015-02 to have a material impact on its financial statements and related disclosures.

Note 16. Subsequent Events

We have evaluated events that have occurred subsequent to March 31, 2015 and have concluded there are no subsequent events that would require recognition in the accompanying consolidated financial statements.

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ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

Forward Looking Information

This Form 10-Q contains certain “forward-looking statements” about the Company and its subsidiaries within the meaning of the Private Securities Litigation Reform Act of 1995, including certain plans, strategies, goals, and projections and including statements about our expectations regarding our pending merger between the Company and Square 1, net interest income, allowance for loan and lease losses, net interest margin, deposit growth, loan and lease portfolio growth and production, liquidity, goodwill, effective tax rates, and interest rate risk management. All statements contained in this Form 10-Q that are not clearly historical in nature are forward-looking, and the words “anticipate,” “assume,” “intend,” “believe,” “forecast,” “expect,” “estimate,” “plan,” “continue,” “will,” “should,” “look forward” and similar expressions are generally intended to identify forward-looking statements. All forward-looking statements (including statements regarding future financial and operating results and future transactions and their results) involve risks, uncertainties and contingencies, many of which are beyond our control, which may cause actual results, performance, or achievements to differ materially from anticipated results, performance or achievements. Actual results could differ materially from those contained or implied by such forward-looking statements for a variety of factors, including without limitation:

• the Company’s ability to complete future acquisitions, including the Square 1 merger, and to successfully integrate such acquired entities or achieve expected benefits, synergies and/or operating efficiencies within expected time frames or at all;

• the Company’s ability to obtain regulatory approvals and meet other closing conditions to the Square 1 merger on the expected terms and schedule;

• delay in closing the Square 1 merger;

• business disruption following the proposed Square 1 merger;

• changes in the Company’s stock price before completion of the Square 1 merger, including as a result of the financial performance of the Company or Square 1 prior to closing;

• the reaction to the Square 1 merger of the companies’ customers, employees and counterparties;

• change in interest rates and lending spreads;

• compression of spreads on newly originated loans;

• unfavorable changes in asset mix;

• changes in our loan product could further compress net interest margin;

• a change in the interest rate environment reduces interest margins;

• credit quality deterioration or pronounced and sustained reduction in market values or other economic factors which adversely effect our borrowers’ ability to repay loans and leases;

• higher than anticipated loan losses;

• changes in economic or competitive market conditions could negatively impact investment or lending opportunities or product pricing and services;

• reduced demand for our services due to strategic or regulatory reasons;

• our inability to grow deposits and access wholesale funding sources;

• legislative or regulatory requirements or changes adversely affected the Company’s business, including an increase to capital requirements;

• loan repayments higher than expected;

• continued or worsening credit losses or charge-offs;

• higher than anticipated delinquencies and reserves;

• asset/liability repricing risks and liquidity risks reduce interest margins and the value of investments;

• the success and timing of other business strategies and asset sales;

• lower than expected dividends paid from Pacific Western Bank to the holding company;

• a deterioration in the overall macroeconomic conditions or the state of the banking industry that could warrant further analysis of the carrying value of goodwill and could result in an adjustment to its carrying value resulting in a non-cash charge to net income;

• changes in tax laws or regulations affecting our business;

• our inability to generate sufficient earnings;

• tax planning or disallowance of tax benefits by tax authorities;

• changes in tax filing jurisdictions or entity classifications;

• changes in the forward yield curve;

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• changes in the relationship between yields on investment securities and loans repaid and yields on assets reinvested; and

• other risk factors described in our audited consolidated financial statements, and other risk factors described in this Form 10-Q and documents filed by PacWest with the U.S. Securities and Exchange Commission (“SEC”).

All forward-looking statements included in this Form 10-Q are based on information available at the time the statement is made. We are under no obligation to (and expressly disclaim any such obligation to) update or alter our forward-looking statements, whether as a result of new information, future events or otherwise except as required by law.

Overview

PacWest Bancorp is a bank holding company registered under the Bank Holding Company Act of 1956, as amended. Our principal business is to serve as the holding company for our Los Angeles‑based wholly owned banking subsidiary, Pacific Western Bank, which we refer to as “Pacific Western” or the “Bank.” References to “we,” “us,” or the “Company” refer to PacWest Bancorp together with its subsidiaries on a consolidated basis. When we refer to “PacWest” or to the “holding company,” we are referring to PacWest Bancorp, the parent company, on a stand-alone basis. References to “Pacific Western Bank” include the Bank’s wholly owned subsidiaries.

Pacific Western is a full-service commercial bank offering a broad range of banking products and services including accepting demand, money market, and time deposits and originating loans and leases, including an array of commercial real estate loans and commercial lending products.  The Bank has a foundation of locally generated and relationship‑based deposits, with 80 full-service branches located primarily in southern and central California. Our branch operations are located primarily in Southern California extending from San Diego County to California’s Central Coast. The Bank also operates three bank branches in the San Francisco Bay area and four bank branches in the Central Valley. Our targeted collateral for real estate loan offerings includes healthcare properties, office properties, industrial properties, multifamily properties, hospitality properties, and retail properties.  Our commercial loan products, available on a nationwide basis, include equipment loans and leases, asset based loans, loans to finance companies, and loans secured by borrower future cash flows, as well as other business‑oriented products.

As a result of the CapitalSource Inc. merger, Pacific Western Bank established the CapitalSource Division, which we also refer to as the National Lending segment. The CapitalSource Division lends throughout the United States, providing middle-market businesses asset-secured loans, equipment-secured loans and leases, and cash flow loans and providing real estate loans secured by various property types. The Bank's leasing operation, Pacific Western Equipment Finance, and its group specializing in asset-based lending, CapitalSource Business Finance Group (formerly BFI Business Finance and First Community Financial), are part of the CapitalSource Division. The CapitalSource Division’s loan and lease origination efforts are conducted through key offices located in Chevy Chase, Maryland; Los Angeles and San Jose, California; St. Louis, Missouri; Denver, Colorado; Chicago, Illinois; New York, New York; and Midvale, Utah. When we refer to "CapitalSource Inc." we are referring to the company acquired on April 7, 2014 and when we refer to the "CapitalSource Division" we are referring to a division of the Bank that specializes in middle-market lending on a nationwide basis.

The Bank competes actively for deposits, and emphasizes solicitation of noninterest‑bearing deposits. In managing the top line of our business, we focus on loan growth, loan yield, deposit cost, and net interest margin. Net interest income, on a year-to-date basis in 2015, accounted for 90.5% of our net revenues (net interest income plus noninterest income).

At March 31, 2015, we had total assets of $16.6 billion, including loans and leases, net of deferred fees, of $12.3 billion compared to $16.2 billion of total assets and $11.9 billion of loans and leases, net of deferred fees, at December 31, 2014. Total assets increased $409.3 million during the three months ended March 31, 2015 driven by $389.7 million in organic loan and lease growth, which resulted from $1.0 billion in loan and lease production.

At March 31, 2015, we had total liabilities of $13.1 billion, including total deposits of $11.9 billion and borrowings of $618.2 million compared to $12.7 billion of total liabilities, $11.8 billion of total deposits and $383.4 million of borrowings at December 31, 2014. Total liabilities increased $382.2 million during the three months ended March 31, 2015 due mainly to the $179.0 million and $234.8 million increases in deposits and borrowings, our main sources for funding loan production. At March 31, 2015, core deposits totaled $6.2 billion or 52% of total deposits and time deposits totaled $5.6 billion or 47% of total deposits.

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Square 1 Financial, Inc. Merger Announcement

On March 2, 2015, PacWest announced the signing of an agreement and plan of merger (the “Agreement”) whereby PacWest and Square 1 Financial, Inc. (“Square 1”) will merge in a transaction valued at approximately $849 million. The surviving company will be PacWest Bancorp and the surviving subsidiary bank will be Pacific Western Bank. The Square 1 lending operations will continue to do business under the name Square 1 as a division of Pacific Western Bank. The merger with Square 1 represents an opportunity to grow core deposits, expand the Company's nationwide lending platform, and increase the Company's presence in the technology and life-sciences credit markets.

Under the terms of the Agreement, Square 1 stockholders will receive 0.5997 shares of PacWest common stock for each share of Square 1 common stock. The total value of the per share merger consideration is $27.49, based on the $45.84 closing price of PacWest common stock on February 27, 2015, the last trading day before the transaction was announced.

As of December 31, 2014, on a pro forma consolidated basis, after giving effect for the Square 1 merger, the Company would have had approximately $19.8 billion in assets with 80 branches throughout California and one branch in North Carolina.

The transaction, currently expected to close in the fourth quarter of 2015, is subject to customary conditions, including the approval of bank regulatory authorities and the Square 1 stockholders.

CapitalSource Inc. Merger

On April 7, 2014, we completed the merger with CapitalSource Inc. As part of the merger, CapitalSource Bank (“CSB”), a wholly-owned subsidiary of CapitalSource Inc., merged with and into Pacific Western Bank. We completed the merger in order to increase our loan and lease generation capabilities and to diversify our loan portfolio. At closing, we created the CapitalSource Division of the Bank. The CapitalSource Division lends throughout the United States, providing middle-market businesses asset-secured loans, equipment-secured loans and leases, and cash flow loans and providing real estate loans secured by various property types. For further information, see Note 3, Acquisitions, in the Notes to Condensed Consolidated Financial Statements (Unaudited) contained in “Item 1. Condensed Consolidated Financial Statements (Unaudited).”

Key Performance Indicators

Among other factors, our operating results depend generally on the following key performance indicators:

The Level of Our Net Interest Income

Net interest income is the excess of interest earned on our interest‑earning assets over the interest paid on our interest‑bearing liabilities. Net interest margin is net interest income expressed as a percentage of average interest‑earning assets. A sustained low interest rate environment combined with low loan growth and high levels of marketplace liquidity may lower both our net interest income and net interest margin going forward.

Our primary interest‑earning assets are loans and investment securities. Our primary interest‑bearing liabilities are deposits. Contributing to our high net interest margin is our low cost of deposits. While our deposit balances will fluctuate depending on deposit holders’ perceptions of alternative yields available in the market, we seek to minimize these variances by attracting a high percentage of noninterest‑bearing deposits. As an industrial loan bank, the former CSB funded its balance sheet with a large proportion of higher-cost time deposits and as a result of the CapitalSource Inc. merger we added $5.3 billion of time deposits. Our goal is to replace higher-costing time deposits with core deposits over time through a dedicated deposit transformation initiative that includes sourcing deposits from CapitalSource Division borrowers. As of March 31, 2015, core deposits obtained from CapitalSource Division borrowers totaled $289.9 million.

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Loan and Lease Growth

We actively seek new lending opportunities under an array of commercial real estate loans and commercial and industrial ("C&I") lending products. Our targeted collateral for our real estate loan offerings includes healthcare properties, office properties, industrial properties, multifamily properties, hospitality properties, and retail properties. Our C&I loan products include equipment-secured loans and leases, asset-secured loans, loans to finance companies, and cash flow loans (which are loans secured by borrower future cash flows and borrower enterprise value). Our loan origination process emphasizes credit quality. We foster lender relationships with borrowers that have had proven loan repayment performance. Our commitment sizes vary by loan product and can range up to $80 million for certain asset-based lending arrangements and multi-property real estate loans. We attempt to price loans to preserve our interest spread and maintain our net interest margin. Achieving net loan growth is subject to many factors, including maintaining strict credit standards, competition from other lenders, and successful borrowers that opt to prepay loans.

The Magnitude of Credit Losses

We emphasize credit quality in originating and monitoring our loans, and we measure our success by the levels of our classified and nonperforming assets and net charge‑offs. We maintain an allowance for credit losses on loans and leases, which is the sum of our allowance for loan and lease losses and our reserve for unfunded loan commitments. Provisions for credit losses are charged to operations as and when needed for both on and off‑balance sheet credit exposure. Loans and leases which are deemed uncollectible are charged off and deducted from the allowance for loan and lease losses. Recoveries on loans and leases previously charged off are added to the allowance for loan and lease losses. The provision for credit losses on the loan and lease portfolio is based on our allowance methodology which considers various credit performance measures such as historical and current net charge‑offs, the levels and trends of nonaccrual and classified loans and leases, the migration of loans and leases into various risk classifications, and the overall level of outstanding loans and leases. For originated and acquired non‑impaired loans, a provision for credit losses may be recorded to reflect credit deterioration after the origination date or after the acquisition date, respectively. For purchased credit impaired ("PCI") loans, a provision for credit losses may be recorded to reflect decreases in expected cash flows on such loans compared to those previously estimated.

We regularly review our loans and leases to determine whether there has been any deterioration in credit quality stemming from borrower operations or changes in collateral value or other factors which may affect collectibility of our loans and leases. Changes in economic conditions, such as the rate of economic growth, the rate of inflation, the unemployment rate, increases in the general level of interest rates, declines in real estate values and adverse conditions in borrowers’ businesses, could negatively impact our borrowers and cause us to adversely classify loans and leases. An increase in classified loans and leases generally results in increased provisions for credit losses and an increased allowance for credit losses. Any deterioration in the commercial real estate market may lead to increased provisions for credit losses because of our concentration in commercial real estate loans.

The Level of Our Noninterest Expense

Our noninterest expense includes fixed and controllable overhead, the major components of which are compensation, occupancy, data processing, and other professional services. It also includes costs that tend to vary based on the volume of activity, such as loan production and number and complexity of foreclosed assets. We measure success in controlling both fixed and variable costs through monitoring of the efficiency ratio. We calculate the base efficiency ratio by dividing noninterest expense by net revenues (the sum of net interest income plus noninterest income). We also calculate a non‑GAAP measure called the “adjusted efficiency ratio.” The adjusted efficiency ratio is calculated in the same manner as the base efficiency ratio except that excluded from net revenues are net FDIC loss sharing expense, gain (loss) on sale of assets, and accelerated discount accretion resulting from early payoffs of acquired loans and excluded from noninterest expense are covered OREO expense and acquisition, integration and reorganization costs.

We present this non-GAAP financial measure and others for supplemental information purposes only in order to understand the Company's operating results and these non-GAAP financial measures should not be considered a substitute for financial information presented in accordance with United States generally accepted accounting principles ("U.S. GAAP").

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The consolidated base and adjusted efficiency ratios have been as follows for the periods indicated:

Three Months Ended	Base Efficiency Ratio	Adjusted Efficiency Ratio
March 31, 2015	38.4%	40.4%
December 31, 2014	44.0%	41.7%
September 30, 2014	46.3%	43.1%
June 30, 2014	84.2%	42.7%

We disclose the adjusted efficiency ratio as it shows the trend in recurring overhead‑related noninterest expense relative to recurring net revenues. See “Non‑GAAP Measurements” for the calculations of the base and adjusted efficiency ratios.

Adjusted Net Earnings

Our net earnings for the first quarter of 2015 totaled $73.1 million; adjusted net earnings for this same period totaled $62.9 million. Adjusted net earnings is another measure of earnings used as an indicator of earnings generating capability, excluding non-recurring and/or volatile items. We calculate adjusted net earnings by excluding accelerated discount accretion resulting from the early payoff of acquired loans, net FDIC loss sharing expense, gain (loss) on the sale of assets (including loans and leases, securities, and an owned building), covered OREO expense, and acquisition, integration and reorganization costs. See “-Non‑GAAP Measurements” for a reconciliation of net earnings to adjusted net earnings.

Critical Accounting Policies

The Company’s accounting policies are fundamental to understanding management’s discussion and analysis of results of operations and financial condition. The Company has identified several policies as being critical because they require management to make particularly difficult, subjective and/or complex judgments about matters that are inherently uncertain and because of the likelihood that materially different amounts would be reported under different conditions or using different assumptions. These policies relate to the allowance for credit losses, the fair value estimates of assets acquired and liabilities assumed in acquisitions, the carrying values of intangible assets, and the realization of deferred income tax assets. For further information, refer to our Annual Report on Form 10‑K for the year ended December 31, 2014.

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Non-GAAP Measurements

The Company uses certain non‑GAAP financial measures to provide meaningful supplemental information regarding the Company’s operational performance and to enhance investors’ overall understanding of such financial performance. The non-GAAP measures used in this Form 10-Q include the following:

• Adjusted net earnings: To calculate adjusted net earnings, we exclude from net earnings primarily income statement items for which the related assets or liabilities have been completely resolved and are no longer on the balance sheet. As analysts and investors view this measure as an indicator of the Company's ability to generate recurring earnings, we disclose this amount in addition to net earnings.

• Adjusted return on average assets, adjusted return on average equity, return on average tangible equity, adjusted return on average tangible equity, tangible common equity amounts and ratios, and tangible book value per share: Given that the use of these measures is prevalent among banking regulators, investors and analysts, we disclose them in addition to return on average assets, return on average equity, equity-to-assets ratio, and book value per share, respectively.

• Adjusted efficiency ratio: We disclose this measure in addition to the efficiency ratio as it shows the trend in recurring overhead-related noninterest expense relative to recurring net revenues.

• Adjusted allowance for credit losses to loans and leases: As the allowance for credit losses takes into consideration credit deterioration on acquired loans and leases only after the purchase date and an estimate of credit losses is included in their initial fair values, we disclose the adjusted allowance for credit losses to loans and leases in addition to the allowance for credit losses to loans and leases. The adjusted allowance for credit losses to loans and leases excludes acquired loans and leases and the related allowance.

The methodology for determining adjusted net earnings, adjusted return on average assets, adjusted return on average equity, return on average tangible equity, adjusted return on average tangible equity, tangible common equity amounts and ratios, tangible book value per share, adjusted efficiency ratio and adjusted allowance for credit losses to loans and leases may differ among companies.

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The following tables present performance amounts and ratios in accordance with GAAP and a reconciliation of the non‑GAAP financial measurements to the GAAP financial measurements as of and for the periods indicated:

	Three Months Ended
Adjusted Net Earnings and Related Ratios:	March 31, 2015			December 31, 2014			March 31, 2014
	(In thousands)
Reported net earnings	$	73,079		$	70,999		$	25,080
Subtract: Tax benefit on discontinued operations	—			(47		)	(588		)
Add: Tax expense on continuing operations	46,073			43,261			15,281
Reported pre-tax earnings	119,152			114,213			39,773
Add: Acquisition, integration, and reorganization costs	2,000			7,381			2,200
Subtract: FDIC loss sharing expense, net	(4,399		)	(4,360		)	(11,430		)
Gain on sale of loans and leases	—			7			106
Gain on securities	3,275			—			4,752
Covered OREO income (expense), net	19			(176		)	1,615
Gain on sale of owned office building	—			—			1,570
Adjusted pre-tax earnings before accelerated discount accretion	122,257			126,123			45,360
Subtract: Accelerated discount accretion from early payoffs of acquired loans	17,352			11,421			7,655
Adjusted pre-tax earnings	104,905			114,702			37,705
Tax expense (1)	(41,962		)	(46,684		)	(15,346		)
Adjusted net earnings(2)	$	62,943		$	68,018		$	22,359
Average assets	$	16,296,640		$	15,892,761		$	6,513,376
Average stockholders' equity	$	3,533,343		$	3,500,291		$	820,248
Less: Average intangible assets	1,737,441			1,739,977			225,294
Average tangible common equity	$	1,795,902		$	1,760,314		$	594,954
Annualized return on average assets (3)	1.82		%	1.77		%	1.56		%
Annualized adjusted return on average assets (4)	1.57		%	1.70		%	1.39		%
Annualized return on average equity (5)	8.39		%	8.05		%	12.40		%
Annualized adjusted return on average equity (6)	7.22		%	7.71		%	11.05		%
Annualized return on average tangible equity (7)	16.50		%	16.00		%	17.10		%
Annualized adjusted return on average tangible equity (8)	14.21		%	15.33		%	15.24		%

_____________________________________

(1) Full-year expected effective rate of 40.0% for the 2015 period and actual effective rate of 40.7% for the 2014 periods.

(2) When the provision for credit losses is excluded, adjusted net earnings were $72.8 million, $69.2 million, and $22.0 million for the three months endedMarch 31, 2015, December 31, 2014, and March 31, 2014.

(3) Annualized net earnings divided by average assets.

(4) Annualized adjusted net earnings divided by average assets.

(5) Annualized net earnings divided by average stockholders' equity.

(6) Annualized adjusted net earnings divided by average stockholders' equity.

(7) Annualized net earnings divided by average tangible common equity.

(8) Annualized adjusted net earnings divided by average tangible common equity.

50

		Three Months Ended
Adjusted Efficiency Ratio:		March 31, 2015			December 31, 2014			March 31, 2014
		(Dollars in thousands)
Noninterest expense		$	84,360		$	91,305		$	50,164
Less:	Acquisition, integration, and reorganization costs	2,000			7,381			2,200
	Covered OREO expense (income), net	(19		)	176			(1,615		)
	Adjusted noninterest expense	$	82,379		$	83,748		$	49,579
Net interest income		$	199,075		$	194,983		$	86,015
Noninterest income		20,871			12,703			4,691
Net revenues		219,946			207,686			90,706
Less:	Accelerated discount accretion from early
	payoffs of acquired loans	17,352			11,421			7,655
	Gain on sale of loans and leases	—			7			106
	Gain on securities	3,275			—			4,752
	FDIC loss sharing expense, net	(4,399		)	(4,360		)	(11,430		)
	Gain on sale of owned office building	—			—			1,570
Adjusted net revenues		$	203,718		$	200,618		$	88,053
Base efficiency ratio(1)		38.4		%	44.0		%	55.3		%
Adjusted efficiency ratio(2)		40.4		%	41.7		%	56.3		%

_______________________________________

(1) Noninterest expense divided by net revenues.

(2) Adjusted noninterest expense divided by adjusted net revenues.

51

Tangible Common Equity:	March 31, 2015			December 31, 2014
	(Dollars in thousands)
PacWest Bancorp Consolidated:
Stockholders’ equity	$	3,533,361		$	3,506,425
Less: Intangible assets	1,744,083			1,737,683
Tangible common equity	$	1,789,278		$	1,768,742
Total assets	$	16,643,940		$	16,234,800
Less: Intangible assets	1,744,083			1,737,683
Tangible assets	$	14,899,857		$	14,497,117
Equity to assets ratio	21.23		%	21.60		%
Tangible common equity ratio(1)	12.01		%	12.20		%
Book value per share	$	34.29		$	34.04
Tangible book value per share	$	17.36		$	17.17
Shares outstanding	103,044,257			103,022,017
Pacific Western Bank:
Stockholders’ equity	$	3,410,276		$	3,379,074
Less: Intangible assets	1,744,083			1,737,683
Tangible common equity	$	1,666,193		$	1,641,391
Total assets	$	16,458,591		$	15,995,914
Less: Intangible assets	1,744,083			1,737,683
Tangible assets	$	14,714,508		$	14,258,231
Equity to assets ratio	20.72		%	21.12		%
Tangible common equity ratio(1)	11.32		%	11.51		%

_______________________________________

(1) Tangible common equity divided by tangible assets.

Adjusted Allowance for Credit Losses to Loans and Leases (Excludes PCI Loans):	March 31, 2015			December 31, 2014
	(Dollars in thousands)
Allowance for credit losses	$	86,554		$	76,767
Less: Allowance related to acquired Non-PCI loans and leases	8,962			4,184
Adjusted allowance for credit losses	$	77,592		$	72,583
Gross Non-PCI loans and leases	$	12,047,946		$	11,613,832
Less: Carrying value of acquired Non‑PCI loans and leases	6,152,731			6,562,237
Adjusted loans and leases	$	5,895,215		$	5,051,595
Allowance for credit losses to loans and leases	0.72		%	0.66		%
Adjusted allowance for credit losses to adjusted loans and leases	1.32		%	1.44		%

52

Results of Operations

Acquisitions Impact Earnings Performance

The comparability of financial information is affected by our acquisitions. We completed the CapitalSource Inc. acquisition on April 7, 2014, adding assets of $9.1 billion. This transaction has been accounted for using the acquisition method of accounting and, accordingly, the related operating results have been included in the consolidated financial statements from its acquisition date.

Earnings Performance

The following table presents profitability metrics for the periods indicated:

	Three Months Ended
	March 31, 2015			December 31, 2014			March 31, 2014
Profitability Measures:
Diluted earnings per share	$	0.71		$	0.69		$	0.55
Annualized return on:
Average assets	1.82		%	1.77		%	1.56		%
Average equity	8.39		%	8.05		%	12.40		%
Average tangible equity (1)	16.50		%	16.00		%	17.10		%
Annualized adjusted return on:
Average assets (2)	1.57		%	1.70		%	1.39		%
Average tangible equity (2)	14.21		%	15.33		%	15.24		%
Net interest margin	5.89		%	5.86		%	5.95		%
Core net interest margin (3)	5.38		%	5.52		%	5.42		%
Base efficiency ratio	38.35		%	43.96		%	55.30		%
Adjusted efficiency ratio (2)	40.44		%	41.75		%	56.31		%

_____________________________

(1) Calculation reduces average equity by average intangible assets.

(2) See "Non-GAAP Measurements" for the calculation of this item.

(3) Excludes accelerated accretion of acquisition discounts resulting from early payoffs of acquired loans.

First Quarter of 2015 Compared to Fourth Quarter of 2014

Net earnings were $73.1 million, or $0.71 per diluted share for the first quarter of 2015, compared to $71.0 million, or $0.69 per diluted share, for the fourth quarter of 2014. The quarter‑over‑quarter increase of $2.1 million in net earnings was due to higher noninterest income of $8.2 million, higher interest income of $4.6 million and lower noninterest expense of $6.9 million offset by the $14.4 million increase in provision for credit losses and the $0.5 million increase in interest expense. The increase in noninterest income was attributed to higher gains on securities sales of $3.3 million, higher foreign currency translation gains of $1.7 million and higher dividends and gains on other investments of $1.6 million. The increase in interest income was generated from higher loan and lease balances and higher accelerated discount accretion offset by lower core yields on non-PCI loans and leases and fewer number of days in the current quarter. The decrease in noninterest expense was due to lower acquisition, integration and reorganization expenses of $5.4 million, lower OREO expense of $1.6 million and lower loan-related expense of $2.0 million, offset by an increase in compensation expense of $1.8 million.

When certain income and expense items are excluded as presented in the table on page 49, adjusted net earnings were $62.9 million for the first quarter of 2015 compared to $68.0 million for the prior quarter. The $5.1 million decrease in adjusted net earnings was driven mainly by a higher credit loss provision. The lower adjusted net earnings resulted in the adjusted average return on assets decreasing from 1.70% to 1.57% and the adjusted return on tangible equity decreasing from 15.33% to 14.21%. The adjusted efficiency ratio improved to 40.44% for the first quarter of 2015 compared to 41.75% for the prior quarter.

53

First Quarter of 2015 Compared to First Quarter of 2014

Net earnings for the first quarter of 2015 were $73.1 million, or $0.71 per diluted share, compared to net earnings for the first quarter of 2014 of $25.1 million, or $0.55 per diluted share. The $48.0 million increase in net earnings was due to higher net interest income of $113.1 million and higher noninterest income of $16.2 million, offset by higher noninterest expense of$34.2 million, higher income tax expense from continuing operations of $30.8 million, and higher provision for credit losses of $17.1 million. All of the changes from period to period are due mostly to including the operations of CapitalSource Inc. subsequent to its April 7, 2014 acquisition date.

54

Net Interest Income

Net interest income, which is our principal source of revenue, represents the difference between interest earned on interest‑earning assets and interest paid on interest‑bearing liabilities. Net interest margin is net interest income expressed as a percentage of average interest‑earning assets. Net interest income is affected by changes in both interest rates and the volume of average interest‑earning assets and interest‑bearing liabilities.

The following table presents, for the periods indicated, the distribution of average assets, liabilities and stockholders’ equity, as well as interest income and yields earned on average interest‑earning assets and interest expense and rates paid on average interest‑bearing liabilities:

	Three Months Ended
	March 31, 2015						December 31, 2014						March 31, 2014
	Average Balance		Interest Income/ Expense		Yields and Rates		Average Balance		Interest Income/ Expense		Yields and Rates		Average Balance		Interest Income/ Expense		Yields and Rates
	(Dollars in thousands)
ASSETS
Loans and leases, net of deferred fees(1)	$	12,055,682	$	202,097	6.80	%	$	11,586,573	$	197,472	6.76	%	$	4,231,319	$	77,463	7.42	%
Investment securities(2)	1,613,422		12,195		3.07	%	1,591,839		12,205		3.04	%	1,512,694		10,823		2.90	%
Deposits in financial institutions	32,761		22		0.27	%	26,971		19		0.28	%	118,682		74		0.25	%
Total interest‑earning assets	13,701,865		214,314		6.34	%	13,205,383		209,696		6.30	%	5,862,695		88,360		6.11	%
Other assets	2,594,775						2,687,378						650,681
Total assets	$	16,296,640					$	15,892,761					$	6,513,376
LIABILITIES AND STOCKHOLDERS’ EQUITY
Interest checking deposits	$	726,748	$	194	0.11	%	$	702,498	$	194	0.11	%	$	627,493	$	78	0.05	%
Money market deposits	1,836,094		945		0.21	%	1,788,341		932		0.21	%	1,451,964		618		0.17	%
Savings deposits	756,578		571		0.31	%	761,073		572		0.30	%	223,074		14		0.03	%
Time deposits	5,481,886		8,769		0.65	%	5,427,687		8,274		0.60	%	666,463		515		0.31	%
Total interest‑bearing deposits	8,801,306		10,479		0.48	%	8,679,599		9,972		0.46	%	2,968,994		1,225		0.17	%
Borrowings	424,061		235		0.22	%	214,053		144		0.27	%	18,176		79		1.76	%
Subordinated debentures	432,603		4,525		4.24	%	433,859		4,597		4.20	%	132,696		1,041		3.18	%
Total interest‑bearing liabilities	9,657,970		15,239		0.64	%	9,327,511		14,713		0.63	%	3,119,866		2,345		0.30	%
Noninterest‑bearing demand deposits	2,949,719						2,900,388						2,374,325
Other liabilities	155,608						164,571						198,937
Total liabilities	12,763,297						12,392,470						5,693,128
Stockholders’ equity	3,533,343						3,500,291						820,248
Total liabilities and stockholders’
equity	$	16,296,640					$	15,892,761					$	6,513,376
Net interest income			$	199,075					$	194,983					$	86,015
Net interest rate spread					5.70	%					5.67	%					5.81	%
Net interest margin					5.89	%					5.86	%					5.95	%
Total deposits (3)	$	11,751,025	$	10,479	0.36	%	$	11,579,987	$	9,972	0.34	%	$	5,343,319	$	1,225	0.09	%
Funding sources (4)	$	12,607,689	$	15,239	0.49	%	$	12,227,899	$	14,713	0.48	%	$	5,494,191	$	2,345	0.17	%

_____________________

(1) Includes nonaccrual loans and leases and loan fees.

(2) The tax‑equivalent yield on investment securities was 3.52%, 3.45% and 3.35% for the three months ended March 31, 2015, December 31, 2014, and March 31, 2014.

(3) Total deposits is the sum of interest-bearing deposits and noninterest-bearing demand deposits. The cost of total deposits is calculated as annualized interest expense on deposits divided by average total deposits.

(4) Funding sources is the sum of interest-bearing liabilities and noninterest-bearing demand deposits. The cost of funding sources is calculated as annualized total interest expense divided by average funding sources.

55

The net interest margin (“NIM”) and loan and lease yields are impacted by accelerated accretion of acquisition discounts resulting from early payoffs of acquired loans, which causes volatility from period to period. The effects of this item on the NIM and loan and lease yield are shown in the following table for the periods indicated:

	Three Months Ended
	March 31, 2015		December 31, 2014		March 31, 2014
NIM:
Reported	5.89	%	5.86	%	5.95	%
Less: Accelerated accretion of acquisition discounts from early payoffs of acquired loans	(0.51	)%	(0.34	)%	(0.53	)%
Core	5.38	%	5.52	%	5.42	%
Loan and Lease Yield:
Reported	6.80	%	6.76	%	7.42	%
Less: Accelerated accretion of acquisition discounts from early payoffs of acquired loans	(0.58	)%	(0.39	)%	(0.73	)%
Core	6.22	%	6.37	%	6.69	%

The following table presents the impact on net interest income and the NIM from all purchase accounting items as indicated in the table below for the periods indicated:

	Three Months Ended
	March 31, 2015					December 31, 2014
	Amount			Impact on NIM		Amount			Impact on NIM
	(Dollars in thousands)
Net interest income/NIM - as reported	$	199,075		5.89	%	$	194,983		5.86	%
Less:
Accelerated accretion of acquisition discounts from early payoffs of acquired loans	(17,352		)	(0.51	)%	(11,421		)	(0.34	)%
Remaining accretion of Non-PCI loan acquisition discounts	(11,245		)	(0.33	)%	(13,073		)	(0.39	)%
Amortization of TruPS discount	1,401			0.04	%	1,401			0.04	%
Accretion of time deposits premium	(1,285		)	(0.04	)%	(2,469		)	(0.07	)%
	(28,481		)	(0.84	)%	(25,562		)	(0.76	)%
Net interest income/NIM - excluding purchase accounting	$	170,594		5.05	%	$	169,421		5.10	%

The following table presents the loan and lease yields and related average balances of our Non‑PCI loans and leases, PCI loans, and total loan and lease portfolio for the periods indicated:

	Three Months Ended
	March 31, 2015			December 31, 2014			March 31, 2014
	(Dollars in thousands)
Yields:
Non‑PCI loans and leases	6.60		%	6.55		%	6.17		%
PCI loans	15.82		%	14.34		%	21.83		%
Total loans and leases	6.80		%	6.76		%	7.42		%
Average Balances:
Non‑PCI loans and leases	$	11,795,034		$	11,275,512		$	3,891,990
PCI loans	260,648			311,061			339,329
Total loans and leases	$	12,055,682		$	11,586,573		$	4,231,319

56

First Quarter of 2015 Compared to Fourth Quarter of 2014

Net interest income increased by $4.1 million to $199.1 million for the first quarter of 2015 compared to $195.0 million for the fourth quarter of 2014 due to higher average loan and lease balances and higher accelerated discount accretion from early payoffs of acquired loans offset by two less days in the current quarter and lower core loan and lease yields.

Our NIM for the first quarter of 2015 was 5.89% compared to 5.86% for the fourth quarter of 2014. The increase in the NIM is due to higher accelerated discount accretion from early payoffs of acquired loans. Accelerated discount accretion from early payoffs of acquired loans was $17.4 million in the first quarter of 2015 (51 basis points on the NIM) compared to $11.4 million in the fourth quarter (34 basis points on the NIM), an increase of $6.0 million.

The yield on loans and leases increased 4 basis points to 6.80% for the first quarter of 2015 compared to 6.76% for the fourth quarter of 2014. The impact on the loan and lease yield from accelerated discount accretion from early payoffs of acquired loans was 58 basis points during the first quarter of 2015 compared to 39 basis points during the fourth quarter of 2014. This was offset by a decrease in loan yield due to rates on newly originated loans being lower than the average portfolio rate and the higher-yielding PCI loan portfolio being a smaller percentage of the entire loan portfolio and fewer days in the current quarter.

The yield on PCI loans increased to 15.82% for the first quarter of 2015 from 14.34% for the fourth quarter of 2014. The accelerated discount accretion from early payoffs of PCI loans totaled $3.3 million for the first quarter and $1.6 million for the fourth quarter, an increase of $1.7 million. When accelerated discount accretion is excluded, the core PCI loan yield was 10.66% for the first quarter compared to 12.30% for the fourth quarter. Additionally, the yield on Non-PCI loans and leases increased to 6.60% for the first quarter of 2015 from 6.55% for the fourth quarter of 2014 due to the $4.3 million increase in accelerated discount accretion from early payoffs of acquired Non-PCI loans.

The cost of all funding sources increased in the first quarter of 2015 due to $1.2 million lower premium accretion on time deposits acquired in the CapitalSource Inc. merger. The cost of average funding remained fairly consistent at 0.49% for the first quarter of 2015 from 0.48% for the fourth quarter of 2014. The repricing of maturing time deposits at current rates and new time deposit production resulted in the decline in the weighted average contractual interest rate on time deposits to 0.72% at March 31, 2015 from 0.75% at December 31, 2014.

First Quarter of 2015 Compared to First Quarter of 2014

Net interest income increased by $113.1 million to $199.1 million for the first quarter of 2015 compared to $86.0 million for the first quarter of 2014 due to the significant increase in interest-earning assets acquired in the CapitalSource Inc. merger.

The NIM decreased 6 basis points to 5.89% for the first quarter of 2015 compared to 5.95% for the same quarter last year, due mostly to a higher overall cost of funding sources attributable to the cost and mix of interest-bearing liabilities and noninterest-bearing deposits; these changes are a result of the CapitalSource Inc. acquisition.

The yield on loans and leases decreased 62 basis points to 6.80% for the first quarter of 2015 compared to 7.42% for the same quarter of 2014. The impact on loan yield from accelerated discount accretion from early payoffs of acquired loans was 58 basis points during the first quarter of 2015 compared to 74 basis points during the first quarter of 2014. Additionally, this decrease was due to rates on newly originated loans being lower than the average portfolio rate, the higher-yielding PCI loan portfolio being a smaller percentage of the entire loan portfolio, and the PCI loan yield being lower in the current quarter.

The cost of all funding sources increased in the first quarter of 2015 compared to the same period last year due to the addition of higher-cost time deposits and subordinated debt from CapitalSource Inc., and the decrease in noninterest-bearing deposits as a percentage of all funding sources. The cost of average funding sources increased 32 basis points to 0.49% for the first quarter of 2015 from 0.17% for the first quarter of 2014. This includes the all‑in deposit cost which increased 27 basis points to 0.36% for the first quarter of 2015 from 0.09% for the same quarter last year. The cost of total interest‑bearing liabilities increased 34 basis points to 0.64% for the first quarter of 2015 from 0.30% for the same quarter last year.

57

Provision for Credit Losses

The following table sets forth the details of the provision for credit losses and allowance for credit losses data for the periods indicated:

	Three Months Ended
	March 31, 2015			December 31, 2014			March 31, 2014
	(Dollars in thousands)
Provision For Credit Losses:
Addition to allowance for Non‑PCI loans and leases (1)	$	16,604		$	2,331		$	600
Addition to (reduction in) reserve for unfunded loan commitments	563			398			(600		)
Total provision for Non‑PCI loans and leases	17,167			2,729			—
Negative provision for PCI Loans	(733		)	(666		)	(644		)
Total provision (negative provision) for credit losses	$	16,434		$	2,063		$	(644	)
Non‑PCI Credit Quality Metrics:
Net charge‑offs (recoveries) on Non‑PCI loans and leases (2)	7,380			(5,041		)	861
Annualized net charge‑offs (recoveries) to average Non‑PCI loans and leases	0.25		%	(0.18		)%	0.09		%
At period end:
Allowance for loan and lease losses	$	79,680		$	70,456		$	59,980
Allowance for credit losses	86,554			76,797			66,955
Non‑PCI nonaccrual loans and leases (3)	139,334			83,621			58,121
Non‑PCI classified loans and leases (3)	333,182			242,611			150,517
Allowance for credit losses to Non‑PCI loans and leases	0.72		%	0.66		%	1.75		%
Allowance for credit losses to Non‑PCI nonaccrual loans and leases	62.12		%	91.80		%	115.20		%

______________________

(1) Includes $6.5 million provision on newly impaired oil and gas related leases during the three months ended March 31, 2015.

(2) Includes $5.0 million charge-off on oil and gas related leases during the three months ended March 31, 2015.

(3) Includes $64.9 million in oil and gas related loans and leases classified and placed on nonaccrual status during the three months ended March 31, 2015.

Provisions for credit losses are charged to earnings for both on and off‑balance sheet credit exposures. We have a provision for credit losses on our Non‑PCI loans and leases and a provision for credit losses on our PCI loans. The provision for credit losses on our Non‑PCI loans and leases is based on our allowance methodology and is an expense, or contra‑expense, that, in our judgment, is required to maintain an adequate allowance for credit losses. Our allowance methodology uses our actual historical loan and lease charge-off experience on pools of similar loans and leases, considers the current credit risk ratings, giving greater weight to loans with more adverse credit risk ratings, and considers subjective criteria such as current economic trends and forecasts, current commercial real estate values and performance trends, and the loan portfolio credit performance trends. The provision for credit losses on our PCI loans results from decreases or increases in expected cash flows on such loans compared to those previously estimated.

We made a provision for credit losses of $16.4 million in the first quarter of 2015 and $2.1 million in the fourth quarter of 2014 in accordance with our allowance methodology, which takes into consideration new loan and lease fundings, commitments to make loans and leases, and underlying credit quality trends. The first quarter provision is comprised of a $17.1 million provision for Non-PCI loans and leases and a negative provision of $0.7 million for PCI loans. The $17.1 million provision related to Non-PCI loans and leases included an $8.8 million net provision for specific reserves and an $8.3 million provision for the combination of portfolio growth, payoffs, and risk rating changes. Of the $8.8 million of net provision for specific reserves, $6.5 million related to newly impaired oil and gas related loans and leases. The negative provision for PCI loans results from increases in expected cash flows on such loans.

58

Our Non‑PCI loans and leases at March 31, 2015, included $6.2 billion in loans and leases acquired in acquisitions. These acquired loans and leases were initially recorded at their estimated fair values and such initial fair values included an estimate of credit losses. The allowance calculation for Non‑PCI loans and leases takes into consideration those acquired loans and leases whose credit quality has deteriorated since their acquisition dates. At March 31, 2015, our allowance for credit losses included $9.0 million related to these acquired loans and leases. When these acquired loans and leases of $6.2 billion are excluded from the total of Non‑PCI loans and leases and the related allowance of $9.0 million is excluded from the allowance for credit losses, the result is an adjusted coverage ratio of our allowance for credit losses to Non‑PCI loans and leases of 1.32% at March 31, 2015. At December 31, 2014, this ratio was 1.44%. The adjusted coverage ratio is lower at March 31, 2015 compared to December 31, 2014 due to the combination of newly originated loans being provided for at a rate lower than the coverage ratio and normal and accelerated accretion of unamortized discount.

Non-PCI loans and leases include $5.9 billion of originated loans and leases that were not obtained through acquisitions. The allowance for loan and lease losses related to these loans and leases totaled $70.7 million, or 1.20% of the outstanding balance at March 31, 2015. At December 31, 2014, this ratio was 1.31%. The decrease in the coverage ratio is due to newly originated loans being provided for at a rate lower than the current coverage ratio.

Certain circumstances may lead to increased provisions for credit losses in the future. Examples of such circumstances are net loan and lease and unfunded commitment growth, an increased amount of loan and lease charge-offs, changes in economic conditions, such as the rate of economic growth, the rate of inflation, the unemployment rate, increases in the general level of interest rates, declines in real estate values and adverse conditions in borrowers’ businesses. See further discussion in “Balance Sheet Analysis - Allowance for Credit Losses on Non‑PCI Loans” and “Balance Sheet Analysis - Allowance for Credit Losses on PCI Loans” contained herein.

59

Noninterest Income

The following table summarizes noninterest income by category for the periods indicated:

	Three Months Ended
	March 31, 2015			December 31, 2014			March 31, 2014
	(In thousands)
Noninterest Income:
Service charges on deposit accounts	$	2,574		$	2,787		$	3,002
Other commissions and fees	5,396			4,556			1,932
Leased equipment income	5,382			5,382			—
Gain on sale of loans and leases	—			7			106
Gain on securities	3,275			—			4,752
FDIC loss sharing expense, net	(4,399		)	(4,360		)	(11,430		)
Other income:
Dividends and realized gains on equity investments	3,477			1,924			—
Foreign currency translation net gains	2,597			854			—
Income recognized on early repayment of leases	736			294			3,505
Gain on sale of owned office building	—			—			1,570
Other	1,833			1,259			1,254
Total noninterest income	$	20,871		$	12,703		$	4,691

The following table presents the details of FDIC loss sharing expense, net for the periods indicated:

	Three Months Ended
	March 31, 2015			December 31, 2014			March 31, 2014
	(In thousands)
FDIC Loss Sharing Expense, Net:
(Loss) gain on FDIC loss sharing asset(1)	$	(278	)	$	(525	)	$	(2,206	)
FDIC loss sharing asset amortization, net	(4,015		)	(3,795		)	(7,912		)
Net reimbursement to FDIC for covered OREOs(2)	(3		)	63			(1,224		)
Other	(103		)	(103		)	(88		)
Total FDIC loss sharing expense, net	$	(4,399	)	$	(4,360	)	$	(11,430	)

_______________________

(1) Includes increases related to covered loan loss provisions and decreases for: (a) write‑offs for covered loans expected to be resolved at amounts higher than their carrying values, and (b) amounts to be reimbursed to the FDIC for covered loans resolved at amounts higher than their carrying values.

(2) Represents amounts to be reimbursed to the FDIC for gains on covered other real estate owned ("OREO") sales and due from the FDIC for covered OREO write‑downs.

First Quarter of 2015 Compared to Fourth Quarter of 2014

Noninterest income increased by $8.2 million to $20.9 million for the first quarter of 2015 compared to $12.7 million for the fourth quarter of 2014 due mostly to higher commissions and fees, gain on securities, higher dividends and gains on equity investments, and higher foreign currency translation net gains. The increase in commissions and fees of $0.8 million is largely the result of a servicing asset write-off of $0.4 million made in the fourth quarter of 2014. The gain on sale of securities was $3.3 million for the first quarter of 2015; there were no securities sold in the prior quarter. Dividends and gains on equity investments increased $1.6 million and foreign currency translation net gains increased $1.7 million from the prior quarter. These items tend to fluctuate from period to period based upon dividends received, sales of equity investments and the movement of the U.S. Dollar against various foreign currencies, especially the Euro.

60

First Quarter of 2015 Compared to First Quarter of 2014

Noninterest income increased by $16.2 million to $20.9 million for the first quarter of 2015 compared to $4.7 million for the first quarter of 2014. The increase was due mostly to income streams acquired in connection with the CapitalSource Inc. merger, including certain other commissions and fees, certain dividends and gains on other equity investments and foreign currency translation net gains. The increase in other commissions and fees is due to higher loan-related fees (unused commitment fees and prepayment fees) of $3.5 million and leased equipment income increased by $5.4 million, all attributable to the added CapitalSource Division operations. Additionally, FDIC loss sharing expense decreased $7.0 million as a result of a $3.9 million decrease in the amortization expense of the FDIC loss sharing asset, as one of the Bank's loss sharing agreements reached the end of its initial indemnification period during the third quarter of 2014; a $1.9 million decrease in gains related to the FDIC loss sharing asset; and a $1.2 million decrease in net reimbursement expense related to covered OREOs.

Noninterest Expense

The following table summarizes noninterest expense by category for the periods indicated:

	Three Months Ended
	March 31, 2015		December 31, 2014		March 31, 2014
	(In thousands)
Noninterest Expense:
Compensation	$	47,737	$	45,930	$	28,627
Occupancy	10,600		10,745		7,595
Data processing	4,308		4,050		2,540
Other professional services	3,221		3,181		1,523
Insurance and assessments	3,025		3,115		1,593
Intangible asset amortization	1,501		1,619		1,364
Leased equipment depreciation	3,103		3,103		—
Foreclosed assets expense (income), net	336		1,938		(1,861		)
Acquisition, integration and reorganization costs	2,000		7,381		2,200
Other expense:
Loan expense	339		2,365		1,194
Other	8,190		7,878		5,389
Total noninterest expense	$	84,360	$	91,305	$	50,164

The following table presents the components of foreclosed assets expense (income), net for the periods indicated:

	Three Months Ended
	March 31, 2015		December 31, 2014			March 31, 2014
	(In thousands)
Foreclosed Assets Expense:
Provision for losses	$	124	$	2,240		$	94
Maintenance costs	106		364			368
(Gain) loss on sale	106		(666		)	(2,323		)
Total foreclosed assets expense (income), net	$	336	$	1,938		$	(1,861	)

61

The following table presents the components of acquisition, integration and reorganization costs for the periods indicated:

	Three Months Ended
	March 31, 2015		December 31, 2014		March 31, 2014
	(In thousands)
Acquisition, Integration and Reorganization Costs:
Severance and employee-related	$	—	$	3,267	$	200
System conversion and integration	—		334		250
Asset write-downs, lease terminations and
other facilities-related	—		500		—
Investment banking deal costs	1,050		—		—
Other (legal, accounting, insurance, consulting)	950		3,280		1,750
Total acquisition, integration and
reorganization costs	$	2,000	$	7,381	$	2,200

First Quarter of 2015 Compared to Fourth Quarter of 2014

Noninterest expense decreased by $6.9 million to $84.4 million for the first quarter of 2015 compared to $91.3 million for the fourth quarter of 2014. The decrease was due mostly to lower acquisition, integration and reorganization expense of $5.4 million, lower foreclosed assets expense of $1.6 million and lower loan-related expense of $2.0 million, offset by higher compensation expense of $1.8 million. The decrease in foreclosed assets expense was mostly due to lower write-downs on existing properties. Loan-related expense decreased due to lower expenses related to origination and work-out activities and a $1.7 million recovery of legal costs. The increase in compensation expense was from higher payroll taxes due to the tax cycle.

First Quarter of 2015 Compared to First Quarter of 2014

Noninterest expense increased by $34.2 million to $84.4 million for the first quarter of 2015 compared to $50.2 million for the first quarter of 2014 as a result of including the CapitalSource Inc. operations after its acquisition date. The acquisition, integration and reorganization costs for the first quarter of 2015 related to the Square 1 Financial, Inc. merger, while these costs for the first quarter of 2014 related to the CapitalSource Inc. merger.

Income Taxes

The effective tax rate for the first quarter of 2015 was 38.7% compared to 37.9% for the fourth quarter of 2014 and 36.9% for the first quarter of 2014. The Company operates primarily in the states of California and Maryland and the blended statutory tax rate for federal and states is 41%.

62

Business Segments

The Company’s reportable segments consist of “Community Banking,” “National Lending,” and “Other.” The Community Banking and National Lending segments include all of the operations of Pacific Western Bank. The Other segment consists of holding company and non-bank subsidiary operations, and intercompany eliminations.

As a result of the CapitalSource Inc. merger, the Bank established the CapitalSource Division, which we also refer to as the National Lending segment. The National Lending segment includes the lending operations gained through the CapitalSource Inc. merger, Pacific Western Equipment Finance, and the CapitalSource Business Finance Group (formerly BFI Business Finance and First Community Financial). We reorganized our asset-based lending and leasing operations when we established the CapitalSource Division.

The CapitalSource Division lends throughout the United States, providing middle-market businesses asset-secured loans, equipment-secured loans, and cash flow loans and providing real estate investment firms real estate loans secured by various property types. The CapitalSource Division’s loan and lease origination efforts are conducted through offices located in Chevy Chase, Maryland; Los Angeles and San Jose, California; Phoenix, Arizona; St. Louis, Missouri; Denver, Colorado; Chicago, Illinois; New York, New York; and Midvale, Utah.

The Community Banking segment includes the operations of Pacific Western Bank, excluding the CapitalSource Division, and includes lending and deposit gathering activities conducted primarily through its California-based branch offices and the Bank’s treasury management function and corporate overhead.

The Other segment consists of holding company operations which result in expenses principally for compensation, facilities, professional services, interest on subordinated debentures, and the non-bank subsidiary operations including interest income from a loan portfolio and related loan servicing expense.

For further information, see Note 14, Business Segments, in the Notes to Condensed Consolidated Financial Statements (Unaudited) contained in "Item 1. Condensed Consolidated Financial Statements (Unaudited)."

The following tables present information regarding our business segments as of and for the periods indicated:

	March 31, 2015
	Community			National						Consolidated
Balance Sheet Data:	Banking			Lending			Other			Company
	(In thousands)
Loans and leases, net of deferred fees	$	3,349,928		$	8,898,843		$	23,395		$	12,272,166
Allowance for loan and lease losses	(40,906		)	(51,472		)	—			(92,378		)
Total loans and leases, net	$	3,309,022		$	8,847,371		$	23,395		$	12,179,788
Goodwill(1)	$	333,979		$	1,394,401		$	—		$	1,728,380
Core deposit and customer relationship intangibles, net	14,918			785			—			15,703
Total assets	6,553,028			9,905,563			185,349			16,643,940
Total deposits(2)	12,252,851			35,847			(354,523		)	11,934,175

________________________

(1) The increase in goodwill for the Community Banking segment and National Lending segment compared to March 31, 2014 was due primarily to $1.5 billion from the CapitalSource Inc. merger.

(2) The negative balance for total deposits in the “Other” segment represents the elimination of holding company cash held in deposit accounts at the Bank.

63

	March 31, 2014
	Community			National						Consolidated
Balance Sheet Data:	Banking			Lending			Other			Company
	(In thousands)
Loans and leases, net of deferred fees	$	3,707,308		$	453,759		$	—		$	4,161,067
Allowance for loan and lease losses	(74,833		)	(6,347		)	—			(81,180		)
Total loans and leases, net	$	3,632,475		$	447,412		$	—		$	4,079,887
Goodwill	$	183,065		$	25,678		$	—		$	208,743
Core deposit and customer relationship intangibles, net	14,139			1,745			—			15,884
Total assets	5,990,162			517,126			10,565			6,517,853
Total deposits(1)	5,415,691			—			(46,283		)	5,369,408

________________________

(1) The negative balance for total deposits in the “Other” segment represents the elimination of holding company cash held in deposit accounts at the Bank.

	Three Months Ended March 31, 2015
	Community			National						Consolidated
Results of Operations:	Banking			Lending			Other			Company
	(In thousands)
Interest income	$	62,956		$	151,219		$	139		$	214,314
Interest expense	(10,661		)	(53		)	(4,525		)	(15,239		)
Intersegment interest income (expense)	6,721			(6,721		)	—			—
Net interest income (expense)	59,016			144,445			(4,386		)	199,075
Negative provision (provision) for credit losses	8,064			(24,406		)	(92		)	(16,434		)
Gain on securities	3,275			—			—			3,275
FDIC loss sharing expense	(4,399		)	—			—			(4,399		)
Other noninterest income	9,575			5,142			7,278			21,995
Total noninterest income	8,451			5,142			7,278			20,871
Foreclosed assets (expense) income, net	(44		)	(61		)	(231		)	(336		)
Intangible asset amortization	(1,389		)	(112		)	—			(1,501		)
Acquisition, integration and reorganization costs	(1,890		)	—			(110		)	(2,000		)
Other noninterest expense	(55,205		)	(22,837		)	(2,481		)	(80,523		)
Total noninterest expense	(58,528		)	(23,010		)	(2,822		)	(84,360		)
Intersegment noninterest income (expense)	26,563			(26,563		)	—			—
Total noninterest expense - adjusted	(31,965		)	(49,573		)	(2,822		)	(84,360		)
Earnings (loss) before taxes	43,566			75,608			(22		)	119,152
Income tax (expense) benefit	(16,873		)	(29,282		)	82			(46,073		)
Net earnings (loss)	$	26,693		$	46,326		$	60		$	73,079

64

	Three Months Ended December 31, 2014
	Community			National						Consolidated
Results of Operations:	Banking			Lending			Other			Company
	(In thousands)
Interest income	$	64,967		$	144,546		$	183		$	209,696
Interest expense	(10,069		)	(46		)	(4,598		)	(14,713		)
Intersegment interest income (expense)	6,173			(6,173		)	—			—
Net interest income (expense)	61,071			138,327			(4,415		)	194,983
Negative provision (provision) for credit losses	9,753			(11,816		)	—			(2,063		)
FDIC loss sharing expense	(4,360		)	—			—			(4,360		)
Other noninterest income	7,025			7,330			2,708			17,063
Total noninterest (expense) income	2,665			7,330			2,708			12,703
Foreclosed assets expense, net	(2,286		)	(18		)	366			(1,938		)
Intangible asset amortization	(1,507		)	(112		)	—			(1,619		)
Acquisition, integration and reorganization costs	(7,381		)	—			—			(7,381		)
Other noninterest expense	(51,605		)	(24,526		)	(4,236		)	(80,367		)
Total noninterest expense	(62,779		)	(24,656		)	(3,870		)	(91,305		)
Intersegment noninterest income (expense)	21,953			(21,953		)	—			—
Total noninterest expense - adjusted	(40,826		)	(46,609		)	(3,870		)	(91,305		)
Earnings (loss) from continuing operations before taxes	32,663			87,232			(5,577		)	114,318
Income tax (expense) benefit	(13,651		)	(34,781		)	5,171			(43,261		)
Net earnings (loss) from continuing operations	19,012			52,451			(406		)	71,057
Loss from discontinued operations before taxes	(105		)	—			—			(105		)
Income tax benefit	47			—			—			47
Net loss from discontinued operations	(58		)	—			—			(58		)
Net earnings (loss)	$	18,954		$	52,451		$	(406	)	$	70,999

65

	Three Months Ended March 31, 2014
	Community			National						Consolidated
Results of Operations:	Banking			Lending			Other			Company
	(In thousands)
Interest income	$	77,595		$	10,765		$	—		$	88,360
Interest Expense	(1,227		)	(77		)	(1,041		)	(2,345		)
Intersegment interest income (expense)	222			(222		)	—			—
Net interest income (expense)	76,590			10,466			(1,041		)	86,015
Negative provision (provision) for credit losses	826			(182		)	—			644
Gain on securities	4,752			—			—			4,752
FDIC loss sharing expense, net	(11,430		)	—			—			(11,430		)
Other noninterest income	6,897			4,445			27			11,369
Total noninterest income	219			4,445			27			4,691
Foreclosed assets expense, net	1,861			—			—			1,861
Intangible asset amortization	(1,191		)	(173		)	—			(1,364		)
Acquisition, integration and reorganization costs	(2,200		)	—			—			(2,200		)
Other noninterest expense	(40,285		)	(6,573		)	(1,603		)	(48,461		)
Total noninterest expense	(41,815		)	(6,746		)	(1,603		)	(50,164		)
Earnings (loss) from continuing operations before taxes	35,820			7,983			(2,617		)	41,186
Income tax (expense) benefit	(13,039		)	(3,331		)	1,089			(15,281		)
Net earnings (loss) from continuing operations	22,781			4,652			(1,528		)	25,905
Loss from discontinued operations before taxes	(1,413		)	—			—			(1,413		)
Income tax benefit	588			—			—			588
Net loss from discontinued operations	(825		)	—			—			(825		)
Net earnings (loss)	$	21,956		$	4,652		$	(1,528	)	$	25,080

First Quarter of 2015 Compared to First Quarter of 2014

Net earnings for the Community Banking segment increased $4.7 million for the first quarter of 2015 to $26.7 million, compared to net earnings of $22.0 million in the first quarter of 2014. Net earnings before taxes increased $7.7 million as a result of lower noninterest expense of $9.9 million, higher noninterest income of $8.2 million, and lower provision for credit losses of $7.2 million, offset by lower net interest income of $17.6 million. The decrease in noninterest expense-adjusted is due mostly to the intersegment allocation of corporate overhead and deposit gathering and maintenance costs from the Community Banking segment to the National Lending segment. In addition, foreclosed asset expense decreased $1.9 million. The allocation of noninterest expense to the National Lending segment, which is categorized in "Intersegment noninterest income (expense)," was adopted after the acquisition of CapitalSource Inc.; accordingly, there is no allocation of overhead expenses between reporting segments for the first quarter of 2014. The increase in noninterest income is due to lower FDIC loss sharing expense and gains on derivatives during the first quarter of 2015 when compared to the first quarter of 2014. Net interest income decreased compared to the prior year period due to lower average loan and lease balances and a lower loan and lease yield.

Net earnings for the National Lending segment increased $41.7 million for the first quarter of 2015 to $46.3 million, compared to $4.7 million for the first quarter of 2014. The increase in net earnings is a result of the CapitalSource Inc. merger which increased interest-earning assets and net interest income. Loans increased $8.4 billion to $8.8 billion as of March 31, 2015 from $447.4 million as of March 31, 2014. Noninterest expense for the National Lending segment increased $42.8 million largely as a result of the $26.6 million intersegment expense allocation and higher compensation expense of $17.5 million as a result of the CapitalSource Inc. merger.

66

Balance Sheet Analysis

Investment Portfolio

The following table presents the components, yields, and durations of our securities available-for-sale as of the date indicated:

	March 31, 2015
Security Type:	Amortized Cost		Fair Value		Yield(1)	Duration (in years)
	(Dollars in thousands)
Residential mortgage-backed securities:
Government agency and government-sponsored enterprise pass through securities	$	439,696	$	458,892	2.63%	3.6
Government agency and government-sponsored enterprise collateralized mortgage obligations	269,766		276,224		2.36%	4.1
Private label collateralized mortgage obligations	36,141		43,094		6.87%	2.2
Municipal securities (2)	579,344		592,853		2.67%	5.9
Corporate debt securities	47,485		47,745		7.30%	6.0
Collateralized loan obligations	112,883		113,805		2.58%	0.3
Government-sponsored enterprise debt securities	36,249		37,405		2.16%	5.0
Other securities	25,451		25,391		1.27%	3.8
Total securities available-for-sale (2)	$	1,547,015	$	1,595,409	2.81%	4.4

______________________________________

(1) Represents the yield for the month of March 31, 2015.

(2) The tax equivalent yield was 3.87% and 3.26% for municipal securities and total securities available-for-sale, respectively.

The following table shows the geographic composition of the majority of our municipal securities portfolio as of the date indicated:

	March 31, 2015
Municipal Securities by State:	Carrying Value		% of Total
	(Dollars in thousands)
Texas	$	96,900	16	%
Washington	55,438		9	%
Illinois	50,380		9	%
Ohio	40,018		7	%
New York	35,521		6	%
California	31,747		5	%
Colorado	27,732		5	%
Connecticut	19,502		3	%
Florida	16,959		3	%
Massachusetts	16,581		3	%
Total of 10 largest states	390,778		66	%
All other states	202,075		34	%
Total municipal securities	$	592,853	100	%

67

Loan and Leases

The following table presents our total loans and leases, net of deferred fees, by portfolio segment and class as of the dates indicated:

	March 31, 2015				December 31, 2014
	Amount		% of Total		Amount		% of Total
	(Dollars in thousands)
Real estate mortgage:
Hospitality	$	622,310	5	%	$	570,634	5	%
SBA	392,704		3	%	380,890		3	%
Commercial real estate	2,742,593		22	%	2,583,965		21	%
Healthcare real estate	1,097,910		9	%	1,051,491		9	%
Multi-family	749,661		6	%	789,271		7	%
Other	209,703		2	%	220,751		2	%
Total real estate mortgage	5,814,881		47	%	5,597,002		47	%
Real estate construction:
Residential	122,338		1	%	96,749		1	%
Commercial	208,259		2	%	217,297		2	%
Total real estate construction	330,597		3	%	314,046		3	%
Total real estate loans	6,145,478		50	%	5,911,048		50	%
Commercial:
Collateralized	394,576		3	%	439,567		4	%
Unsecured	143,585		1	%	131,939		1	%
Asset-based	1,719,835		14	%	1,794,907		15	%
Cash flow	2,818,293		23	%	2,486,411		21	%
Equipment finance	914,015		8	%	969,489		8	%
SBA	42,426		—	%	47,304		—	%
Total commercial	6,032,730		49	%	5,869,617		49	%
Consumer	93,958		1	%	101,767		1	%
Total loans and leases, net of deferred fees(1)	$	12,272,166	100	%	$	11,882,432	100	%

_______________________________________

(1) Includes PCI loans of $254.3 million and $290.8 million at March 31, 2015 and December 31, 2014, of which the majority are included in the Real Estate Mortgage - "Other" category in this table.

Our real estate portfolio exposes us to risk elements associated with mortgage loans on commercial property. Commercial real estate mortgage loan repayments typically do not rely on the sale of the underlying collateral, but instead rely on the income producing potential of the collateral as the source of repayment. Ultimately, though, due to the loan amortization period generally being greater than the contractual loan term, the borrower may be required to refinance the loan, either with us or another lender, or pay off the loan, by selling the underlying collateral. Our commercial-related real estate loans do not expose us to risks generally associated with residential mortgage loans such as option ARM, interest-only, or subprime mortgage loans.

Credit Exposure to the Oil and Gas Industries

The per-barrel price of crude oil was consistently greater than $90 during the first three quarters of 2014. By December 2014, the price per barrel declined to under $60. During the first quarter of 2015, prices per barrel averaged approximately $50. These low oil prices have adversely impacted the operations of oil industry borrowers and lessees. Certain borrowers and lessees are more adversely affected by the oil price decline than others. Borrowers and lessees that are more affected by the oil price decline provide oil well operation and maintenance services. Less-affected borrowers and lessees provide land and marine transportation services which are ongoing.

68

At March 31, 2015, we had 45 loan and lease relationships totaling $264.4 million to borrowers and lessees that were involved with the energy industry in general. The obligors under these loans and leases either conduct mining, oil and gas extraction or provide industrial support services. The collateral for these loans and leases primarily includes equipment, such as drilling and mining equipment and transportation vehicles, used directly and indirectly in these activities.

Included in the energy industry loan and lease relationships are certain borrowers and lessees that have little or no exposure to the oil and gas industries. The following table reconciles the energy industry loan and lease relationships to the loan and lease relationships having exposure to the oil and gas industries:

	March 31, 2015
	Total			Loans			Leases
	Amount		Number	Amount		Number	Amount		Number
	(Dollars in thousands)
Outstanding loans and leases having any exposure
to the energy industry	$	264,370	45	$	133,527	19	$	130,843	26
Less:
Miscellaneous credits unrelated to the oil and gas
industries	1,373		5	1,373		5	—		—
Coal mining enterprises	47,200		6	3,680		1	43,520		5
Obligors providing general transportation services	23,875		3	21,966		2	1,909		1
Industrial cleaning company	10,472		1	10,472		1	—		—
Loans and leases related to support services
to the oil and gas industries	$	181,450	30	$	96,036	10	$	85,414	20

The 30 loan and lease relationships providing support services to the oil and gas industries and totaling $181.5 million represent 1.5% of total loans and leases. At March 31, 2015, four relationships totaling $65.1 million were on nonaccrual status and were classified. Updated cash flow analyses and appraisals resulted in a $6.5 million credit loss provision related to these four relationships, of which $5.0 million represented a charge-off.

69

The following table presents the composition of our total real estate mortgage loan portfolio as of the dates indicated:

	March 31, 2015				December 31, 2014
Loan Category:	Amount		% of Total		Amount		% of Total
	(Dollars in thousands)
Commercial real estate mortgage:
Industrial/warehouse	$	479,571	8	%	$	480,437	9	%
Retail	521,798		9	%	469,340		8	%
Office buildings	812,594		14	%	776,718		14	%
Owner-occupied	615,927		11	%	601,729		11	%
Hotel	624,459		11	%	572,855		10	%
Healthcare	1,077,483		19	%	1,030,852		19	%
Mixed use	169,192		3	%	129,135		2	%
Gas station	13,078		—	%	11,428		—	%
Self storage	67,169		1	%	60,262		1	%
Restaurant	13,281		—	%	17,145		—	%
Land acquisition/development	32,714		—	%	28,910		1	%
Unimproved land	7,465		—	%	7,483		—	%
Other	221,128		4	%	224,875		4	%
Total commercial real estate mortgage	4,655,859		80	%	4,411,169		79	%
Residential real estate mortgage:
Multi-family	734,298		13	%	774,710		14	%
Single family owner-occupied	150,003		3	%	161,652		3	%
Single family nonowner-occupied	202,152		3	%	173,964		3	%
Mixed use	11,318		—	%	11,537		—	%
HELOCs	61,251		1	%	63,970		1	%
Total residential real estate mortgage	1,159,022		20	%	1,185,833		21	%
Total gross real estate mortgage loans	$	5,814,881	100	%	$	5,597,002	100	%

70

The following table presents a roll forward of the loan and lease portfolio by business segment for the period indicated:

	Three Months Ended March 31, 2015
	Community			National
Loan and Lease Roll Forward by Business Segment(1):	Banking			Lending			Total
	(Dollars in thousands)
Beginning balance	$	3,401,129		$	8,481,303		$	11,882,432
Loans and leases originated and purchased	143,200			894,706			1,037,906
Existing loans and leases:
Principal repayments, net(2)	(192,104		)	(445,184		)	(637,288		)
Transfers to foreclosed assets	(186		)	(208		)	(394		)
Charge-offs	(2,111		)	(8,379		)	(10,490		)
Ending balance	$	3,349,928		$	8,922,238		$	12,272,166
Weighted average yields on loans and leases originated and purchased
during the three months ended:
March 31, 2015	5.28		%	5.84		%	5.76		%
December 31, 2014	5.09		%	5.76		%	5.67		%
September 30, 2014	4.73		%	5.56		%	5.34		%
June 30, 2014	4.98		%	5.86		%	5.71		%

_______________________________________

(1) Includes direct financing leases but excludes equipment leased to others under operating leases.

(2) Includes principal repayments on existing loans, changes in revolving lines of credit (repayments and draws), loan participation sales and other changes within the loan portfolio.

Allowance for Credit Losses on Non-PCI Loans and Leases

The allowance for credit losses on non-purchased credit impaired ("Non-PCI") loans and leases is the combination of the allowance for loan and lease losses and the reserve for unfunded loan commitments. The allowance for loan and lease losses is reported as a reduction of outstanding loan and lease balances and the reserve for unfunded loan commitments is included within "Accrued interest payable and other liabilities." The following discussion is for Non-PCI loans and leases and the allowance for credit losses thereon. Refer to "Balance Sheet Analysis - Allowance for Credit Losses on PCI Loans" for the policy on PCI loans. For loans and leases acquired and measured at fair value and deemed non-impaired on the acquisition date, our allowance methodology measures deterioration in credit quality or other inherent risks related to these acquired assets that may occur after the acquisition date.

The allowance for loan and lease losses is maintained at a level deemed appropriate by management to adequately provide for known and inherent risks in the loan and lease portfolio and other extensions of credit at the balance sheet date. The allowance is based upon our continual review of the credit quality of the loan and lease portfolio, which includes loan and lease payment trends, borrowers' compliance with loan agreements, borrowers' current and budgeted financial performance, collateral valuation trends, and current economic factors and external conditions that may affect our borrowers' ability to pay. Loans and leases that are deemed to be uncollectible are charged off and deducted from the allowance. The provision for loan and lease losses and recoveries on loans and leases previously charged off are added to the allowance.

The allowance for loan and lease losses contains a general reserve component for loans and leases with no credit impairment and a specific reserve component for loans and leases determined to be impaired.

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A loan or lease is considered impaired when it is probable that we will be unable to collect all amounts due according to the original contractual terms of the agreement. We assess our loans for impairment on an on-going basis using certain criteria such as payment performance, borrower reported financial results and budgets, and other external factors when appropriate. We measure impairment of a loan based upon the fair value of the loan’s collateral if the loan is collateral-dependent or the present value of cash flows, discounted at the loan’s effective interest rate, if the loan is not collateral-dependent. We measure impairment of a lease based upon the present value of the scheduled lease and residual cash flows, discounted at the lease's effective interest rate. To the extent a loan or lease balance exceeds the estimated collectible value, a specific reserve or charge-off is recorded depending upon the certainty of the estimate of loss. Smaller balance loans (under $250,000), with a few exceptions for certain loan types, are generally not individually assessed for impairment but are evaluated collectively.

The methodology we use to estimate the general reserve component of our allowance for credit losses considers both objective and subjective criteria. The objective criteria uses our actual historical loan and lease charge-off experience on pools of similar loans and leases to establish loss factors that are applied to our current loan and lease balances to estimate inherent credit losses. When estimating the general reserve component for the various pools of similar loan types, the loss factors applied to the loan pools consider the current credit risk ratings, giving greater weight to loans with more adverse credit risk ratings. We recognize that the determination of the allowance for loan and lease losses is sensitive to the assigned credit risk ratings and inherent loss rates at any given point in time. To ensure the accuracy of our credit risk ratings, an independent credit review function assesses the ratings assigned to loans on an on-going basis.

The subjective criteria considered when establishing the loss factors include the following:

• current economic trends and forecasts;

• current commercial real estate values, performance trends, and overall outlook in the markets where we lend;

• legal and regulatory matters that could impact our borrowers’ ability to repay our loans;

• our loan portfolio composition and any loan concentrations;

• our current lending policies and the effects of any new policies or policy amendments;

• our new loan origination volume and the nature of it;

• our loan portfolio credit performance trends; and

• the results of our on-going independent credit review.

The reserve for unfunded commitments is estimated using the same loss factors as used for the allowance for loan and lease losses and is computed based only on the expected usage of the unfunded commitments.

The credit risk ratings assigned to every loan and lease are either “pass,” “special mention,” “substandard” or “doubtful” and defined as follows:

• Pass: Loans and leases classified as "pass" are not adversely classified and collection and repayment in full is expected.

• Special Mention: Loans and leases classified as "special mention" have a potential weakness that requires management's attention. If not addressed, these potential weaknesses may result in further deterioration in the borrower's ability to repay the loan or lease.

• Substandard: Loans and leases classified as "substandard" have a well-defined weakness or weaknesses that jeopardize the collection of the debt. They are characterized by the possibility that we will sustain some loss if the weaknesses are not corrected.

• Doubtful: Loans and leases classified as "doubtful" have all the weaknesses of those classified as "substandard," with the additional trait that the weaknesses make collection or repayment in full highly questionable and improbable.

In addition, we may refer to the loans and leases classified as "substandard" and "doubtful" together as "classified" loans and leases. For further information on classified loans and leases, see Note 6, Loans and Leases, of the Notes to Condensed Consolidated Financial Statements (Unaudited) contained in "Item 1. Condensed Consolidated Financial Statements (Unaudited)."

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Management believes that the allowance for credit losses is appropriate for the known and inherent risks in our Non-PCI loan and lease portfolio and that the credit risk ratings and inherent loss rates currently assigned are appropriate. It is possible that others, given the same information, may at any point in time reach different conclusions that could result in a significant impact to the Company's financial statements. In addition, current credit risk ratings are subject to change as we continue to monitor our loans and leases. To the extent we experience, for example, increased levels of documentation deficiencies, adverse changes in collateral values, or negative changes in economic and business conditions that adversely affect our borrowers, our classified loans and leases may increase. Higher levels of classified loans and leases generally result in increased provisions for credit losses and an increased allowance for credit losses. Although we have established an allowance for credit losses that we consider appropriate, there can be no assurance that the established allowance will be sufficient to absorb related losses in the future.

The following table presents information regarding the allowance for credit losses on Non-PCI loans and leases as of the dates indicated:

Non-PCI Allowance for Credit Losses Data:	March 31, 2015			December 31, 2014			March 31, 2014
	(Dollars in thousands)
Allowance for loan and lease losses	$	79,680		$	70,456		$	59,980
Reserve for unfunded loan commitments	6,874			6,311			6,975
Total allowance for credit losses	$	86,554		$	76,767		$	66,955
Allowance for credit losses to loans and leases	0.72		%	0.66		%	1.75		%
Allowance for credit losses to nonaccrual loans and leases	62.12		%	91.80		%	115.20		%

See "Balance Sheet Analysis - Nonperforming Assets and Performing Restructured Loans" for information regarding the increase in our nonaccrual loans and leases during the three months ended March 31, 2015.

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The following table presents the changes in our allowance for credit losses on Non-PCI loans and leases for the periods indicated:

	Three Months Ended
	March 31,			December 31,			March 31,
Non-PCI Allowance for Credit Losses:	2015			2014			2014
	(Dollars in thousands)
Allowance for credit losses, beginning of period	$	76,767		$	68,997		$	67,816
Provision for credit losses:
Addition to allowance for loan and lease losses	16,604			2,331			600
Addition to (reduction in) reserve for unfunded loan commitment	563			398			(600		)
Provision for credit losses	17,167			2,729			—
Loans and leases charged off:
Real estate mortgage	(1,453		)	(1,104		)	(94		)
Real estate construction	—			—			(1,441		)
Commercial	(8,395		)	(414		)	—
Consumer	(63		)	(129		)	(15		)
Total loans and leases charged off	(9,911		)	(1,647		)	(1,550		)
Recoveries on loans charged off:
Real estate mortgage	1,295			691			261
Real estate construction	632			44			24
Commercial	410			4,964			377
Consumer	194			989			27
Total recoveries on loans charged off	2,531			6,688			689
Net (charge-offs) recoveries	(7,380		)	5,041			(861		)
Allowance for credit losses, end of period	$	86,554		$	76,767		$	66,955
Annualized net charge-offs (recoveries) to average loans and leases	0.25		%	(0.18		)%	0.09		%

Allowance for Credit Losses on PCI Loans

The PCI loans are subject to our internal and external credit review. For PCI loans, the allowance for loan losses is measured at the end of each financial reporting period based on expected cash flows. Decreases or (increases) in the amount and changes in the timing of expected cash flows on the PCI loans as of the financial reporting date compared to those previously estimated are usually recognized by recording a provision or a (negative provision) for credit losses on such loans. If deterioration in the expected cash flows results in a reserve requirement, a provision for credit losses is charged to earnings.

The following table presents the changes in our allowance for credit losses on PCI loans for the periods indicated:

	Three Months Ended
	March 31,			December 31,			March 31,
PCI Allowance for Credit Losses:	2015			2014			2014
	(In thousands)
Allowance for credit losses on PCI loans, beginning of period	$	13,999		$	18,815		$	21,793
Negative provision	(733		)	(666		)	(644		)
Net (charge-offs) recoveries	(568		)	(4,150		)	51
Allowance for credit losses on PCI loans, end of period	$	12,698		$	13,999		$	21,200

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Nonperforming Assets and Performing Restructured Loans

The following table presents nonperforming assets and performing restructured loans information as of the dates indicated:

	March 31, 2015			December 31, 2014			March 31, 2014
	(Dollars in thousands)
Nonaccrual Non-PCI loans and leases	$	139,334		$	83,621		$	58,121
Nonaccrual PCI loans(1)	23,331			25,264			—
Total nonaccrual loans	162,665			108,885			58,121
Foreclosed assets, net	35,940			43,721			50,895
Total nonperforming assets	$	198,605		$	152,606		$	109,016
Performing restructured loans(2)	$	35,975		$	35,244		$	35,101
Nonaccrual loans and leases to loans and leases (3)	1.32		%	0.91		%	1.52		%
Nonperforming assets to loans and leases and foreclosed assets, net (3)	1.61		%	1.28		%	2.71		%

_______________________________________

(1) Represents legacy CapitalSource Inc. borrowing relationships placed on nonaccrual status as of the acquisition date.

(2) Excludes PCI loans.

(3) Calculation includes total loans and leases as of March 31, 2015 and December 31, 2014. For prior periods, calculation excludes PCI loans.

Nonperforming assets include Non-PCI and PCI nonaccrual loans and leases and foreclosed assets and totaled $198.6 million at March 31, 2015 compared to $152.6 million at December 31, 2014. The $46.0 million increase in nonperforming assets was due to a $53.8 million increase in nonaccrual loans and leases and a $7.8 million decrease in foreclosed assets. The ratio of nonperforming assets to loans and leases and foreclosed assets increased to 1.61% at March 31, 2015 from 1.28% at December 31, 2014.

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Nonaccrual Loans and Leases

The $53.8 million increase in nonaccrual loans and leases during the first quarter of 2015 was attributable mainly to $76.5 million in additions, of which $69.9 million were three relationships related to the oil and gas industries and negatively impacted by continued low oil prices, offset partially by $9.7 million in charge-offs and $13.0 million in principal payments, returns to accrual status, and other reductions.

The following table presents our Non-PCI nonaccrual loans and leases and accruing loans and leases past due between 30 and 89 days by portfolio segment and class as of the dates indicated:

	Nonaccrual Loans and Leases								Accruing and
	March 31, 2015				December 31, 2014				30 - 89 Days Past Due
			% of Loan				% of Loan		March 31, 2015		December 31, 2014
	Amount		Category		Amount		Category		Amount		Amount
	(Dollars in thousands)
Real estate mortgage:
Hospitality	$	8,088	1.3	%	$	6,366	1.1	%	$	—	$	—
SBA	10,919		2.8	%	11,141		3.0	%	3,310		3,339
Other	18,328		—	%	20,105		0.5	%	3,009		4,769
Total real estate mortgage	37,335		0.7	%	37,612		0.7	%	6,319		8,108
Real estate construction:
Residential	379		—	%	381		0.4	%	—		—
Commercial	453		—	%	1,178		0.6	%	—		—
Total real estate construction	832		—	%	1,559		0.5	%	—		—
Commercial:
Collateralized	3,601		0.9	%	5,450		1.2	%	1,397		93
Unsecured	594		—	%	639		0.5	%	—		69
Asset-based	4,159		—	%	4,574		0.3	%	—		—
Cash flow	15,172		0.5	%	15,964		0.7	%	—		—
Equipment finance	71,039		7.8	%	11,131		1.2	%	7,751		2,339
SBA	3,128		7.4	%	3,207		6.8	%	614		26
Total commercial	97,693		1.6	%	40,965		0.7	%	9,762		2,527
Consumer	3,474		3.7	%	3,485		3.4	%	9		50
Total Non-PCI loans and leases	$	139,334	1.2	%	$	83,621	0.7	%	$	16,090	$	10,685

The increase in nonaccrual loans and leases generally, and equipment finance loans and leases specifically, was due to three relationships totaling $64.9 million, after related charge-offs of $5.0 million, that are related to the oil and gas industries and which have been adversely impacted by continued low oil prices.

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The following table lists the ten largest Non-PCI lending relationships on nonaccrual status as of the date indicated:

March 31, 2015 Nonaccrual Amount		Quarter Placed on Nonaccrual Status	Description
(In thousands)
$	41,753	2015 Q1	Loan secured by a fleet of vessels used to service shallow water oil platforms in the Gulf of Mexico. Borrower is operating but has been negatively affected by low oil prices. Borrower is current under a restructured loan agreement.
15,657		2015 Q1	Lease secured by hydraulic fracturing equipment. Lessee has been negatively affected by low oil prices and is exploring the sale of the company.
14,973		2014 Q2	Two healthcare cash flow loans secured by enterprise value. Borrower is current on principal and interest payments, but leverage has increased due to a decline in performance.
7,452		2015 Q1	Loan secured by four oil rigs. Borrower is operating but has been negatively affected by low oil prices. Borrower is current and a loan restructuring is in progress.
6,195		2013 Q4	Two loans, each secured by a hotel in San Diego County. The borrower is paying according to the restructured terms of each loan.
4,111		2014 Q1	Asset based loan secured by consumer sales installment contracts. Although operating performance of the borrower has declined, loan payments have remained current and the loan is fully secured by performing receivables.
3,680		2014 Q3	Equipment loans secured by equipment used for coal production. Although the borrower is current on principal and interest payments, its operating performance has declined.
3,484		2014 Q1	Two loans secured by 19 properties located predominantly in San Luis Obispo County. Collateral consists of five undeveloped residential properties, two single family residences, two commercial buildings, and 10 undeveloped commercial properties.
3,276		2014 Q4	SBA 7(a) loan secured by a franchise restaurant in Colorado. Loan is supported by a 75% SBA guarantee on the Bank's balance.
3,154		2014 Q1	Loan secured by an industrial building in Santa Barbara County.
$	103,735		Total

Foreclosed Assets

The following table presents the components of foreclosed assets (primarily other real estate owned, or OREO) as of the dates indicated:

Property Type:	March 31, 2015		December 31, 2014		March 31, 2014
	(In thousands)
Commercial real estate	$	1,036	$	2,449	$	13,161
Construction and land development	18,942		24,759		32,682
Multi-family	4,964		4,823		835
Single family residence	3,253		3,392		192
Total OREO, net	28,195		35,423		46,870
Other foreclosed assets	7,745		8,298		4,025
Total foreclosed assets	$	35,940	$	43,721	$	50,895

Foreclosed assets decreased $7.8 million during the first quarter of 2015 mainly as a result of sales of $8.1 million.

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Performing Restructured Loans

Non-PCI performing restructured loans increased by $0.7 million during the first quarter of 2015 to $36.0 million at March 31, 2015. The increase was attributable primarily to $2.7 million in additions, offset partially by $2.0 million in payoffs. At March 31, 2015, we had $22.4 million in real estate mortgage loans, $7.8 million in real estate construction loans, $5.5 million in commercial loans, and $0.3 million in consumer loans that were accruing interest under the terms of troubled debt restructurings.

The majority of the performing restructured loans were on accrual status prior to the loan modifications and have remained on accrual status after the loan modifications due to the borrowers making payments before and after the restructurings. In these circumstances, generally, a borrower may have had a fixed-rate loan that they continued to repay, but may be having cash flow difficulties. In an effort to work with certain borrowers, we have agreed to interest rate reductions and/or interest-only payments for a period of time. In these cases, we do not forgive principal but may consider the extension of maturity date as part of the loan modification in order to assist the borrower. As a result of the current economic environment, we anticipate loan restructurings to continue.

PCI Delinquent and Nonaccrual Loans

Loans accounted for as PCI are generally considered accruing and performing loans as the loans accrete their discount to interest income over the estimated life of the loan when cash flows are reasonably estimable. Accordingly, PCI loans that are contractually past due are still considered to be accruing and performing loans. If the timing and amount of future cash flows is not reasonably estimable, the loans are classified as nonaccrual loans and interest income is not recognized until the timing and amount of future cash flows can be reasonably estimated. As of March 31, 2015, there are $23.3 million of PCI loans on nonaccrual status and included in the delinquency table below.

The following table presents a summary of the borrowers' underlying payment status of PCI loans as of the dates indicated:

	March 31, 2015		December 31, 2014		March 31, 2014
	(In thousands)
Current	$	229,642	$	268,263	$	294,393
30 to 89 days past due	4,954		2,700		2,965
90 days or more past due	19,689		19,828		35,158
Total	$	254,285	$	290,791	$	332,516

Deposits

The following table presents the balance of each major category of deposits at the dates indicated:

	March 31, 2015				December 31, 2014
Deposit Category:	Amount		% of Total		Amount		% of Total
	(Dollars in thousands)
Noninterest-bearing deposits	$	3,029,463	26	%	$	2,931,352	25	%
Interest checking deposits	739,073		6		732,196		6
Money market deposits	1,682,123		14		1,709,068		15
Savings deposits	746,741		6		762,961		6
Total core deposits	6,197,400		52		6,135,577		52
Brokered non-maturity deposits	155,976		1		120,613		1
Total non-maturity deposits	6,353,376		53		6,256,190		53
Time deposits under $100,000	2,562,078		22		2,467,338		21
Time deposits $100,000 and over	3,018,721		25		3,031,600		26
Total time deposits	5,580,799		47		5,498,938		47
Total deposits	$	11,934,175	100	%	$	11,755,128	100	%

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Total deposits increased $179.0 million during the first quarter to $11.9 billion at March 31, 2015, including an increase in core deposits of $61.8 million. At March 31, 2015, core deposits totaled $6.2 billion, or 52% of total deposits, including $3.0 billion of noninterest-bearing demand deposits, or 26% of total deposits. Deposits obtained from CapitalSource Division borrowers totaled $303.1 million at March 31, 2015, of which $289.9 million were core deposits. The remaining unamortized purchase accounting premium on acquired CapitalSource Inc. time deposits as of March 31, 2015 was $2.4 million, of which $1.6 million will be recognized as a reduction of interest expense in the remainder of 2015.

The following table summarizes the maturities of time deposits, together with their weighted average contractual rate and estimated effective rate, as of the date indicated:

	March 31, 2015
Maturity:	Time Deposits Under $100,000		Time Deposits $100,000 or More		Total Time Deposits		Contractual Rate	Estimated Effective Rate
	(Dollars in thousands)
Due in three months or less	$	666,961	$	741,091	$	1,408,052	0.65%	0.60%
Due in over three months through six months	845,811		1,242,887		2,088,698		0.71%	0.68%
Due in over six months through twelve months	825,838		701,955		1,527,793		0.71%	0.67%
Due in over 12 months through 24 months	175,369		288,107		463,476		0.95%	0.85%
Due in over 24 months	48,099		44,681		92,780		0.99%	0.72%
Total	$	2,562,078	$	3,018,721	$	5,580,799	0.72%	0.68%
At December 31, 2014	$	2,467,338	$	3,031,600	$	5,498,938	0.75%	0.69%

Regulatory Matters

Capital

Bank regulatory agencies measure capital adequacy through standardized risk-based capital guidelines that compare different levels of capital (as defined by such guidelines) to risk-weighted assets and off-balance sheet obligations. At March 31, 2015, Banks and bank holding companies considered to be “well capitalized” must maintain a minimum Tier 1 leverage ratio of 5.00%, a minimum common equity Tier 1 risk-based capital ratio of 6.50%, a minimum Tier 1 risk-based capital ratio of 8.00%, and a minimum total risk-based capital ratio of 10.00%. Regulatory capital requirements limit the amount of deferred tax assets that may be included when determining the amount of regulatory capital. Deferred tax asset amounts in excess of the calculated limit are deducted from regulatory capital. At March 31, 2015, such amount was $154.9 million for the Company and $116.2 million for the Bank. No assurance can be given that the regulatory capital deferred tax asset limitation will not increase in the future.

In July 2013, the Company’s primary federal regulator, the FRB, and the Bank’s primary federal regulator, the FDIC, approved final rules (the “New Capital Rules”) establishing a new comprehensive capital framework for U.S. banking organizations. The New Capital Rules generally implement the Basel Committee on Banking Supervision’s (the “Basel Committee”) December 2010 final capital framework referred to as “Basel III” for strengthening international capital standards.

The New Capital Rules substantially revised the risk-based capital requirements applicable to bank holding companies and their depository institution subsidiaries, including the Company and the Bank, as compared to the previous U.S. general risk-based capital rules. The New Capital Rules revised the definitions and the components of regulatory capital, as well as addressed other issues affecting the numerator in banking institutions’ regulatory capital ratios. The New Capital Rules also addressed asset risk weights and other matters affecting the denominator in banking institutions’ regulatory capital ratios and replaced the existing general risk-weighting approach, which was derived from the Basel Committee’s 1988 “Basel I” capital accords, with a more risk-sensitive approach. These include a 150% risk weight (up from 100%) for certain high volatility commercial real estate acquisition, development and construction loans and non-residential mortgage loans that are 90 days past due or otherwise on nonaccrual status; a 20% (up from 0%) credit conversion factor for the unused portion of a commitment with an original maturity of one year or less that is not unconditionally cancellable; a 250% risk weight (up from 100%) for mortgage servicing rights and deferred tax assets that are not deducted from capital; and increased risk weights (from 0% to 600%) for equity exposures.

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The New Capital Rules were effective for the Company and the Bank on January 1, 2015, subject to phase-in periods for certain of their components and other provisions. As expected, the most significant of the provisions of the New Capital Rules which applied to the Company and the Bank were as follows: the phase-out of trust preferred securities from Tier 1 capital, the higher risk-weighting of high volatility and past due real estate loans and the capital treatment of deferred tax assets and liabilities above certain thresholds.

The following table presents regulatory capital requirements and our regulatory capital ratios under Basel III:

	March 31, 2015
	Pacific Western Bank		PacWest Bancorp Consolidated		Well Capitalized Requirement
Tier 1 Leverage	11.53	%	11.74	%	5.00	%
Common Equity Tier-1 Capital	12.07		12.27		6.50
Tier 1 Capital	12.07		12.27		8.00
Total Capital	12.80		15.80		10.00

Subordinated Debentures

The Company issued subordinated debentures to trusts that were established by us or entities we have acquired, which, in turn, issued trust preferred securities. The amount of subordinated debentures totaled $431.4 million at March 31, 2015 and includes $298.1 million of debentures assumed in connection with the CapitalSource Inc. merger. At March 31, 2015, $32.8 million of the trust preferred securities is included in Tier I capital and $387.4 million is included in Tier II capital.

Dividends on Common Stock and Interest on Subordinated Debentures

Bank holding companies, such as PacWest, are required to notify the Board of Governors of the Federal Reserve System (“FRB”) prior to declaring and paying a dividend to stockholders during any period in which quarterly and/or cumulative twelve-month net earnings are insufficient to fund the dividend amount, among other requirements. Interest payments made by the Company on subordinated debentures are considered dividend payments under FRB regulations.

Liquidity

Liquidity Management

The goals of our liquidity management are to ensure the ability of the Company to meet its financial commitments when contractually due and to respond to other demands for funds such as the ability to meet the cash flow requirements of customers who may be either depositors wanting to withdraw funds or borrowers who may need assurance that sufficient funds will be available to meet their credit needs. We have an Executive Management ALM Committee, or "Executive ALM Committee," which is comprised of members of senior management and is responsible for managing balance sheet and off-balance sheet commitments to meet the needs of customers while achieving our financial objectives. Our Executive ALM Committee meets regularly to review funding capacities, current and forecasted loan demand, and investment opportunities.

The Company manages its liquidity by maintaining pools of liquid assets on-balance sheet, consisting of cash and due from banks, interest-earning deposits in other financial institutions and unpledged investment securities available-for-sale, which we refer to as our primary liquidity. In addition, we also maintain available borrowing capacity under secured borrowing lines with the FHLB and the Federal Reserve Bank of San Francisco (“FRBSF”), which we refer to as our secondary liquidity. In addition to its secured lines of credit, the Bank also maintains unsecured lines of credit, subject to availability, of $80 million with correspondent banks for purchase of overnight funds.

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The following table provides a summary of the Bank’s primary and secondary liquidity levels at the dates indicated:

	March 31, 2015			December 31, 2014
	(In thousands)
Primary Liquidity-On-Balance Sheet:
Cash and due from banks	$	140,873		$	164,757
Interest-earning deposits at financial institutions	250,981			148,469
Investment securities available-for-sale	1,595,409			1,567,177
Less: pledged securities	(354,726		)	(308,555		)
Total primary liquidity	$	1,632,537		$	1,571,848
Ratio of primary liquidity to total deposits	13.7		%	13.4		%
	March 31, 2015			December 31, 2014
	(In thousands)
Secondary Liquidity-Off-Balance Sheet Available Secured Borrowing Capacity:
Total secured borrowing capacity with the FHLB	$	2,361,965		$	2,391,157
Less: secured advances outstanding	(615,000		)	(380,000		)
Net secured borrowing capacity with the FHLB	1,746,965			2,011,157
Secured credit line with the FRBSF	1,533,630			1,305,650
Total secondary liquidity	$	3,280,595		$	3,316,807

During the three months ended March 31, 2015, the Bank’s primary liquidity increased $60.7 million due to a $102.5 million increase in interest-earning deposits in financial institutions, and a $28.2 million increase in investment securities available-for-sale, offset by a $23.9 million decrease in cash and due from banks and a $46.2 million increase in pledged investment securities available-for-sale. The Bank’s secondary liquidity decreased $36.2 million during the first quarter due to a $235.0 million increase in FHLB secured advances outstanding and a $29.2 million decrease in the borrowing capacity on the secured credit line with the FHLB, offset partially by a $228.0 million increase in the secured credit line with the FRBSF attributable to additional loans pledged as collateral.

At March 31, 2015, $2.1 billion of certain qualifying loans were specifically pledged as collateral for the secured borrowing line maintained with the FRBSF. The FHLB borrowing lines are secured by a blanket lien on certain qualifying loans that are not pledged to the FRBSF.

In addition to our primary liquidity, we generate liquidity from cash flows from our amortizing loan and securities portfolios and from our large base of core customer deposits, defined as noninterest-bearing demand, interest checking, savings and money market accounts. At March 31, 2015, such deposits totaled $6.2 billion and represented 52% of the Bank's total deposits. These core deposits are normally less volatile, often with customer relationships tied to other products offered by the Company promoting long-standing relationships and stable funding sources.

Deposits from our customers may decrease if interest rates increase significantly or if corporate customers move funds from the Bank generally. In order to address the Bank’s liquidity risk as deposit balances may fluctuate, the Bank maintains adequate levels of available liquidity.

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The following table provides a summary of the Bank’s core deposits at the dates indicated:

	March 31, 2015		December 31, 2014
	(In thousands)
Core Deposits:
Noninterest-bearing demand	$	3,029,463	$	2,931,352
Interest checking	739,073		732,196
Money market deposits	1,682,123		1,709,068
Savings deposits	746,741		762,961
Total core deposits	$	6,197,400	$	6,135,577

Our liquidity policy establishes various liquidity guidelines for the Bank. The policy includes guidelines for On-Balance Sheet Liquidity (a measurement of primary liquidity to total deposits plus borrowings), Coverage and Crisis Coverage Ratios (measurements of liquid assets to expected short-term liquidity required for the loan and deposit portfolios under normal and stressed conditions), Loan to Funding Ratio (measurement of gross loans net of fees divided by deposits plus FHLB borrowings), Wholesale Funding Ratio (measurement of wholesale funding divided by interest-earning assets), and other guidelines developed for measuring and maintaining liquidity. As of March 31, 2015, we were in compliance with all liquidity guidelines established in the liquidity policy.

We use brokered deposits, the availability of which is uncertain and subject to competitive market forces, for liquidity management purposes. At March 31, 2015, brokered deposits totaled $989.3 million, consisting of $768.4 million of brokered time deposits, $156.0 million of non-maturity brokered sweep accounts, $46.6 million of CDARS Program deposits, and $18.5 million of other miscellaneous brokered deposits. At December 31, 2014, brokered deposits totaled $776.5 million, consisting of $592.7 million of brokered time deposits, $120.6 million of non-maturity brokered sweep accounts, $44.0 million of CDARS Program deposits, and $19.1 million of other miscellaneous brokered deposits, The CDARS Program represents deposits that are participated with other FDIC‑insured financial institutions as a means to provide FDIC deposit insurance coverage for the full amount of our customers’ deposits. The amount of our brokered deposits has increased in recent quarters because of favorable market conditions for brokered deposits compared to retail time deposits we obtain from the Bank's branch network and the large amount of deposits which can be obtained in a short period of time to manage liquidity and funding needs.

Holding Company Liquidity

The primary sources of liquidity for the holding company include dividends from the Bank and our ability to raise capital, issue subordinated debt and secure outside borrowings. Our ability to obtain funds for the payment of dividends to our stockholders and for other cash requirements is largely dependent upon the Bank’s earnings. The Bank is subject to restrictions under certain federal and state laws and regulations that limit its ability to transfer funds to the holding company through intercompany loans, advances or cash dividends.

Dividends paid by state banks, such as the Bank, are regulated by the California Department of Business Oversight (“DBO”) under its general supervisory authority as it relates to a bank’s capital requirements and the FDIC. A state bank may declare a dividend without the approval of the DBO and the FDIC as long as the total dividends declared in a calendar year do not exceed either the retained earnings or the total of net profits for three previous fiscal years less any dividends paid during such period. During the three months ended March 31, 2015, PacWest received $55.0 million in dividends from the Bank. For the foreseeable future, any dividends from the Bank to the holding company require DBO and FDIC approval.

At March 31, 2015, PacWest had $354.0 million in cash, of which the majority is on deposit at the Bank. We believe this amount of cash, along with anticipated dividends from the Bank, will be sufficient to fund the holding company's cash flow needs over the next 12 months.

On October 1, 2014, the holding company obtained an unsecured, variable-rate revolving line of credit in the amount of $75 million with an expiration date of September 30, 2015. This borrowing facility provides additional available liquidity to the holding company.

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Contractual Obligations

The following table summarizes the known contractual obligations of the Company as of the date indicated:

	March 31, 2015
	Due Within One Year		Due in One to Three Years		Due in Three to Five Years		Due After Five Years		Total
	(In thousands)
Time deposits(1)	$	5,021,937	$	521,327	$	33,396	$	1,279	$	5,577,939
Overnight FHLB advance	615,000		—		—		—		615,000
Long-term debt obligations(1)	1,499		1,373		284		539,439		542,595
Contractual interest(2)	15,428		6,609		1,380		60		23,477
Operating lease obligations	23,001		35,042		23,801		29,063		110,907
Other contractual obligations	13,675		5,214		198		640		19,727
Total	$	5,690,540	$	569,565	$	59,059	$	570,481	$	6,889,645

_______________________________________

(1) Excludes purchase accounting fair value adjustments.

(2) Excludes interest on subordinated debentures as these instruments are variable rate.

Long-term debt obligations include subordinated debentures. Debt obligations are also discussed in Note 9, Borrowings, Subordinated Debentures and Brokered Deposits, in the Notes to Condensed Consolidated Financial Statements (Unaudited) contained in “Item 1. Condensed Consolidated Financial Statements (Unaudited).” Operating lease obligations are discussed in the Notes to Consolidated Financial Statements included in our Annual Report on Form 10-K for the year ended December 31, 2014. The other contractual obligations relate to our minimum liability associated with our data and item processing contract with a third-party provider and commitments to contribute capital to investments in low income housing project partnerships and private equity funds.

We believe that we will be able to meet our contractual obligations as they come due through the maintenance of adequate cash levels. We expect to maintain adequate cash levels through profitability, loan and securities repayment and maturity activity, and continued deposit gathering activities. We believe we have in place various borrowing mechanisms for both short-term and long-term liquidity needs.

Off-Balance Sheet Arrangements

Our obligations also include off-balance sheet arrangements consisting of loan and lease-related commitments, of which only a portion is expected to be funded. At March 31, 2015, our loan and lease-related commitments, including standby letters of credit, totaled $2.2 billion. The commitments, which may result in funded loans and leases, increase our profitability through net interest income. We manage our overall liquidity taking into consideration funded and unfunded commitments as a percentage of our liquidity sources. Our liquidity sources have been and are expected to be sufficient to meet the cash requirements of our lending activities.

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Asset/Liability Management and Interest Rate Sensitivity

Interest Rate Risk

We measure our interest rate risk position on at least a quarterly basis using two methods: (i) net interest income simulation analysis; and (ii) market value of equity modeling. The results of these analyses are reviewed by the Executive ALM Committee and the Board Asset Liability Management Committee quarterly. If hypothetical changes to interest rates cause changes to our simulated net present value of equity and/or net interest income outside our pre‑established limits, we may adjust our asset and liability mix in an effort to bring our interest rate risk exposure within our established limits.

We evaluated the results of our net interest income simulation and market value of equity models prepared as of March 31, 2015, the results of which are presented below. Our net interest income simulation indicates that our balance sheet is asset sensitive. An asset sensitive profile would suggest that a sudden sustained increase in rates would result in an increase in our estimated net interest income and market value of equity, while a liability sensitive profile would suggest that these amounts would decrease. In general, we view the net interest income model results as more relevant to the Company’s current operating profile and manage our balance sheet giving priority to this information.

Net Interest Income Simulation

We used a simulation model to measure the estimated changes in net interest income that would result over the next 12 months from immediate and sustained changes in interest rates as of March 31, 2015. This model is an interest rate risk management tool and the results are not necessarily an indication of our future net interest income. This model has inherent limitations and these results are based on a given set of rate changes and assumptions at one point in time. We have assumed no growth in either our total interest‑sensitive assets or liabilities over the next 12 months; therefore, the results reflect an interest rate shock to a static balance sheet.

This analysis calculates the difference between net interest income forecasted using both increasing and declining interest rate scenarios using the forward yield curve at March 31, 2015. In order to arrive at the base case, we extend our balance sheet at March 31, 2015 one year and reprice any assets and liabilities that would contractually reprice or mature during that period using the products’ pricing as of March 31, 2015. Based on such repricing, we calculate an estimated net interest income and net interest margin.

The repricing relationship for each of our assets and liabilities includes many assumptions. For example, many of our assets are variable‑rate loans, which are assumed to reprice in accordance with their contractual terms. Some loans and investment vehicles include the opportunity of prepayment (imbedded options) and the simulation model uses prepayment assumptions to estimate these prepayments and reinvest these proceeds at current simulated yields. Our deposit products reprice at our discretion and are assumed to reprice more slowly in a rising or declining interest rate environment and usually reprice at a rate less than the change in market rates. The effects of certain balance sheet attributes, such as fixed‑rate loans, variable‑rate loans that have reached their floors, the 4.00% floor we have administered on the Bank's base lending rate (affecting $549 million of variable-rate loans originated by the Community Banking segment tied to this index), and the volume of noninterest‑bearing deposits as a percentage of earning assets, impact our assumptions and consequently the results of our interest rate risk management model. Changes that could vary significantly from our assumptions include loan and deposit growth or contraction, changes in the mix of our earning assets or funding sources, and future asset/liability management decisions, all of which may have significant effects on our net interest income.

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The following table presents as of March 31, 2015, forecasted net interest income and net interest margin for the next 12 months using a base market interest rate and the estimated change to the base scenario given immediate and sustained upward and downward movements in interest rates of 100, 200 and 300 basis points:

					Estimated
	Estimated		Percentage	Estimated	Net Interest
March 31, 2015	Net Interest		Change	Net Interest	Margin Change
Interest Rate Scenario:	Income		From Base	Margin	From Base
	(Dollars in millions)
Up 300 basis points	$	824.8	12.0%	5.97%	0.64%
Up 200 basis points	$	788.1	7.0%	5.70%	0.37%
Up 100 basis points	$	756.0	2.7%	5.47%	0.14%
BASE CASE	$	736.4	—	5.33%	—
Down 100 basis points	$	740.3	0.5%	5.35%	0.02%
Down 200 basis points	$	739.8	0.5%	5.35%	0.02%
Down 300 basis points	$	739.8	0.5%	5.34%	0.01%

Total base case year 1 net interest income increased $18.2 million to $736.4 million at March 31, 2015 from $718.2 million at December 31, 2014, due to the increase in the average balance of loans. The net interest income ("NII") simulation model prepared as of March 31, 2015 suggests our balance sheet is asset sensitive. The degree of asset sensitivity in the first quarter’s NII rate shock results decreased slightly compared to the prior quarter primarily due to changes in the mix of interest-bearing liabilities, as short-term borrowings increased $234.8 million, and also due to adjustments made to deposit pricing beta assumptions, which we monitor and adjust on an ongoing basis.

Although $9.3 billion of the $12.3 billion of total loans in the portfolio have variable interest rate terms, only $2.3 billion of those variable-rate loans would immediately reprice at March 31, 2015 under the modeled scenarios. Of the remaining variable-rate loans, $6.4 billion would not immediately reprice because the loans' fully-indexed rates are below their floor rates. Of these $6.4 billion of loans at their floors, the fully-indexed rates would rise off of the floors and reprice as follows:

March 31, 2015
		Rate
Cumulative		Increase
Amount of		Needed to
Loans		Reprice
(Dollars in millions)
$	5,596.7	100 bps
$	5,975.4	200 bps
$	6,156.6	300 bps

Additionally, certain variable-rate hybrid ARM loans do not immediately reprice because the loans contain an initial fixed-rate period before they become adjustable. The cumulative amounts of hybrid ARM loans that would switch from being fixed-rate to variable-rate, because the initial fixed-rate term would expire, was approximately $150.8 million, $299.1 million, and $462.6 million in the next one, two, and three years.

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Market Value of Equity

We measure the impact of market interest rate changes on the net present value of estimated cash flows from our assets, liabilities and off-balance sheet items, defined as the market value of equity, using a simulation model. This simulation model assesses the changes in the market value of our interest-sensitive financial instruments that would occur in response to an instantaneous and sustained increase or decrease in market interest rates of 100, 200, and 300 basis points. This analysis assigns significant value to our noninterest-bearing deposit balances. The projections are by their nature forward-looking and therefore inherently uncertain, and include various assumptions regarding cash flows and interest rates.

This model is an interest rate risk management tool and the results are not necessarily an indication of our actual future results. Actual results may vary significantly from the results suggested by the market value of equity table. Loan prepayments and deposit attrition, changes in the mix of our earning assets or funding sources, and future asset/liability management decisions, among others, may vary significantly from our assumptions. The base case is determined by applying various current market discount rates to the estimated cash flows from the different types of assets, liabilities and off-balance sheet items existing at March 31, 2015.

The following table shows the projected change in the market value of equity for the set of rate scenarios presented as of March 31, 2015:

March 31, 2015 Interest Rate Scenario:	Estimated Market Value		Dollar Change From Base			Percentage Change From Base		Percentage of Total Assets		Ratio of Estimated Market Value to Book Value
	(Dollars in millions)
Up 300 basis points	$	4,024.9	$	123.7		3.2	%	24.2	%	113.9	%
Up 200 basis points	$	3,977.7	$	76.5		2.0	%	23.9	%	112.6	%
Up 100 basis points	$	3,924.6	$	23.4		0.6	%	23.6	%	111.1	%
BASE CASE	$	3,901.2	$	—		—		23.4	%	110.4	%
Down 100 basis points	$	3,852.3	$	(48.9	)	(1.3	)%	23.1	%	109.0	%
Down 200 basis points	$	3,807.1	$	(94.1	)	(2.4	)%	22.9	%	107.7	%
Down 300 basis points	$	3,814.9	$	(86.3	)	(2.2	)%	22.9	%	108.0	%

In comparing the March 31, 2015 simulation results to December 31, 2014, our base case estimated market value of equity has increased while our overall profile has remained relatively unchanged. Base case market value of equity increased $45.4 million compared to December 31, 2014. This increase was due to a decrease in the discount rate used to value a portion of our loan portfolio to reflect lower spreads observed in the market for these assets, to lower medium and long-term interest rates, which cause the fair value of loans to appreciate and the fair value of deposits to depreciate, and to the $30.0 million increase in the book value of shareholders' equity.

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ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Please see the section above titled "Asset/Liability Management and Interest Rate Sensitivity" in "Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations" which provides an update to our quantitative and qualitative disclosure about market risk. This analysis should be read in conjunction with text under the caption "Quantitative and Qualitative Disclosure About Market Risk" in our Annual Report on Form 10-K for the year ended December 31, 2014, which text is incorporated herein by reference. Our analysis of market risk and market-sensitive financial information contains forward-looking statements and is subject to the disclosure at the beginning of Item 2 regarding such forward-looking information.

ITEM 4. CONTROLS AND PROCEDURES

As of the end of the period covered by this report, an evaluation was carried out by the Company's management, with the participation of the Chief Executive Officer and the Chief Financial Officer, of the effectiveness of the Company's disclosure controls and procedures (as defined in Rule 13a-15(e) under the Securities Exchange Act of 1934). Based upon that evaluation, the Chief Executive Officer and Chief Financial Officer concluded that, as of the end of the period covered by this report, these disclosure controls and procedures were effective.

There have been no changes in the Company's internal control over financial reporting (as defined in Rule 13a-15(f) under the Securities Exchange Act of 1934) during our most recent fiscal quarter that have materially affected, or are reasonably likely to materially affect, the Company's internal control over financial reporting.

PART II. OTHER INFORMATION

ITEM 1. LEGAL PROCEEDINGS

In the ordinary course of our business, we are party to various legal actions, which we believe are incidental to the operation of our business. The outcome of such legal actions and the timing of ultimate resolution are inherently difficult to predict. In the opinion of management, based upon information currently available to us, any resulting liability, in addition to amounts already accrued, taking into consideration insurance which may be applicable, would not have a material adverse effect on the Company’s financial statements or operations.

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ITEM 1A. RISK FACTORS

For information regarding factors that could affect the Company's results of operations, financial condition and liquidity, see the risk factors disclosed in the "Risk Factors" section of our Annual Report on Form 10-K for the year ended December 31, 2014. See also Part I, Item 2 (Forward-Looking Information) of this quarterly report on Form 10-Q.

On March 2, 2015, the Company announced it had entered into the Agreement whereby the Company and Square 1 Financial, Inc. ("Square 1") will merge in a transaction valued at approximately $849 million. In connection with the execution of that agreement, the Company has supplemented the risk factors previously disclosed in the Company's most recent Annual Report on Form 10-K as follows:

Combining the two companies may be more difficult, costly or time consuming than expected and the anticipated benefits and cost savings of the merger may not be realized.

The Company and Square 1 have operated and, until the completion of the merger, will continue to operate, independently. The success of the merger, including anticipated benefits and cost savings, will depend, in part, on PacWest's ability to successfully combine the businesses of PacWest and Square 1. To realize these anticipated benefits and cost savings, after the completion of the merger, PacWest expects to integrate Square 1's business into its own. It is possible that the integration process could result in the loss of key employees, the disruption of each company's ongoing businesses or inconsistencies in standards, controls, procedures and policies that adversely affect the combined company's ability to maintain relationships with clients, customers, depositors and employees or to achieve the anticipated benefits and cost savings of the Square 1 merger. The loss of key employees could have an adverse effect on PacWest's financial results and the value of its common stock. If PacWest experiences difficulties with the integration process, the anticipated benefits of the merger may not be realized fully or at all, or may take longer to realize than expected.

Failure to consummate the Square 1 merger, or a delay in consummating the Square 1 merger, could negatively impact the market price of PacWest common stock and could have a material adverse effect on our business, financial condition and results of operations.

Consummation of the Square 1 merger is subject to various customary conditions, including (i) approval by Square 1's stockholders, (ii) receipt of certain required regulatory approvals and such approvals not containing materially burdensome regulatory conditions, (iii) the absence of any governmental order or law prohibiting the consummation of the Square 1 merger and (iv) effectiveness of the registration statement for the PacWest common stock to be issued as consideration in the Square 1 merger. The obligation of each party to consummate the Square 1 merger is also conditioned upon (i) subject to certain exceptions, the accuracy of the of the representations and warranties of the other party, (ii) performance in all material respects by the other party of its obligations under the Square 1 merger agreement, (iii) the adjusted stockholders' equity of Square 1 being in excess of a specified level, (iv) receipt by such party of a tax opinion to the effect that the Square 1 merger will qualify as a reorganization within the meaning of Section 368(a) of the Internal Revenue Code of 1986, as amended and (v) the absence of a material adverse effect with respect to the other party since the date of the Square 1 merger agreement. PacWest and Square 1 have have agreed to use their respective reasonable best efforts to obtain all necessary regulatory approvals for the Square 1 merger. The parties will not be required to take any action, or agree to any condition or restriction, in connection with obtaining any regulatory permits, consents, approvals and authorizations of governmental authorities that would reasonably be likely, in each case following the effective time of the Square 1 merger (but regardless when the action, condition or restriction is to be taken or implemented), to (i) have a material adverse effect with respect to the combined company and its subsidiaries, taken as a whole or (ii) require PacWest, the Bank, the combined company or the surviving bank in the bank merger to raise additional capital in an amount that would materially reduce the economic benefits of the Square 1 merger to the holders of PacWest common stock (including the Square 1 stockholders in respect of the shares of PacWest common stock received by them in the Square 1 merger).

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If the Square 1 merger is not consummated, our ongoing business, financial condition and results of operations may be materially adversely affected and the market price of PacWest common stock may decline significantly, particularly to the extent that the current market price reflects a market assumption that the Square 1 merger will be consummated. If the consummation of the Square 1 merger is delayed, including by a delay in receipt of necessary governmental approvals or by the receipt of a competing acquisition proposal, our business, financial condition and results of operations may also be materially adversely affected. In addition, we have incurred and will incur substantial expenses in connection with the negotiation and completion of the transaction contemplated by the merger agreement. If the Square 1 merger is not completed, we would have to recognize these expenses without realizing the expected benefits of the transaction. Any of the foregoing, or other risks arising in connection with the failure or the delay in consummating the Square 1 merger, including the diversion of management attention from pursuing other opportunities and the constraints in the Square 1 merger agreement on our ability to make significant changes to our ongoing business during the pendency of the Square 1 merger, could have a material adverse effect on our business, financial condition and results of operations.

We are subject to various uncertainties and contractual restrictions while the Square 1 merger is pending that could disrupt the conduct of our business and could have a material adverse effect on our business, financial condition and results of operations.

Uncertainty about the effect of the Square 1 merger on employees, customers, suppliers, and vendors may have a material adverse effect on our business, financial condition and results of operations. These uncertainties may impair our ability or the ability of Square 1 to attract, retain and motivate key personnel, depositors and borrowers pending the consummation of the Square 1 merger, as such personnel, depositors and borrowers may experience uncertainty about their future roles following the consummation of the Square 1 merger. Additionally, these uncertainties could cause customers (including depositors and borrowers), suppliers, vendors and others who deal with us to seek to change existing business relationships with us or fail to extend an existing relationship with us. In addition, competitors may target our existing customers by highlighting potential uncertainties and integration difficulties that may result from the Square 1 merger.

We have a small number of key personnel. The pursuit of the Square 1 merger and the preparation for the integration may place a burden on management and internal resources. Any significant diversion of management attention away from ongoing business concerns and any difficulties encountered in the transition and integration process could have a material adverse effect on our business, financial condition and results of operations.

In addition, the Square 1 merger agreement restricts us from taking certain actions without Square 1's consent while the Square 1 merger is pending. These restrictions may, among other matters, prevent us from pursuing otherwise attractive business opportunities, selling assets, incurring indebtedness, engaging in significant capital expenditures in excess of certain limits set forth in the merger agreement, entering into other transactions or making other changes to our business prior to consummation of the Square 1 merger or termination of the Square 1 merger agreement. These restrictions could have a material adverse effect on our business, financial condition and results of operations.

The consideration to be paid in the Square 1 merger is fixed and will not be adjusted for changes in our business, assets, liabilities, prospects, outlook, financial condition or results of operations, or in the event of any change in our stock price.

The merger consideration is fixed in the Square 1 merger agreement and will not be adjusted for changes in our business, assets, liabilities, prospects, outlook, financial condition or results of operations, or changes in the market price of, analyst estimates of, or projections relating to, PacWest common stock. For example, if we experienced an improvement in our business, assets, liabilities, prospects, outlook, financial condition or results of operations prior to consummation of the Square 1 merger, there would be no adjustment to the amount of the merger consideration.

ITEM 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS

None.

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ITEM 6. INDEX TO EXHIBITS

Exhibit Number	Description
2.1	Agreement and Plan of Merger dated March 1, 2015 between PacWest Bancorp and Square 1 Financial, Inc. (Exhibit 2.1 to Form 8-K filed on March 5, 2015 and incorporated herein by this reference).
3.1	Certificate of Incorporation, as amended, of PacWest Bancorp, a Delaware corporation, dated April 22, 2008 (Exhibit 3.1 to Form 8-K filed on May 14, 2008 and incorporated herein by this reference).
3.2	Certificate of Amendment of Certificate of Incorporation of PacWest Bancorp, a Delaware Corporation, dated May 14, 2010 (Exhibit 3.1 to Form 8-K filed on May 14, 2010 and incorporated herein by this reference).
3.3	Certificate of Merger filed with the Delaware Secretary of State, dated April 7, 2014.
3.4	Certificate of Correction of Certificate of Merger filed with the Delaware Secretary of State, dated April 14, 2014.
3.5	Amended and Restated Bylaws of PacWest Bancorp, a Delaware corporation, dated November 5, 2014 (Exhibit 3.5 to Form 10-Q filed on November 7, 2014 and incorporated herein by this reference).
10.1	Form of Voting Agreement dated March 1, 2015, between PacWest Bancorp and certain stockholders of Square 1 Financial, Inc. (Exhibit 99.1 to Form 8-K filed on March 5, 2015 and incorporated herein by this reference).
31.1	Rule 13a-14(a)/15d-14(a) Certification of Chief Executive Officer. *
31.2	Rule 13a-14(a)/15d-14(a) Certification of Chief Financial Officer. *
32.1	Section 1350 Certification of Chief Executive Officer. *
32.2	Section 1350 Certification of Chief Financial Officer. *
101	Interactive data files pursuant to Rule 405 of Regulation S-T: (i) the Condensed Consolidated Balance Sheets as of March 31, 2015 and December 31, 2014, (ii) the Condensed Consolidated Statements of Earnings for the three months ended March 31, 2015, December 31, 2014 and March 31, 2014, (iii) the Condensed Consolidated Statements of Comprehensive Income for the three months ended March 31, 2015, December 31, 2014 and March 31, 2014, (iv) the Condensed Consolidated Statement of Changes in Stockholders' Equity for the three months ended March 31, 2015, (v) the Condensed Consolidated Statements of Cash Flows for the three months ended March 31, 2015 and 2014, and (vi) the Notes to Condensed Consolidated Financial Statements.

_____________________

* Filed herewith.

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Signatures

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

	PACWEST BANCORP
Date: May 8, 2015	/s/    VICTOR R. SANTORO
	Victor R. Santoro
	Executive Vice President and Chief Financial Officer

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EX-31.1

Exhibit 31.1

Certification

Pursuant to Section 302 of the

Sarbanes-Oxley Act of 2002

I, Matthew P. Wagner, certify that:

1. I have reviewed this report on Form 10-Q for the quarterly period ended March 31, 2015 of PacWest Bancorp;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles.

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date:	May 8, 2015	/s/ Matthew P. Wagner
		Matthew P. Wagner Chief Executive Officer

EX-31.2

Exhibit 31.2

Certification

Pursuant to Section 302 of the

Sarbanes-Oxley Act of 2002

I, Victor R. Santoro, certify that:

1. I have reviewed this report on Form 10-Q for the quarterly period ended March 31, 2015 of PacWest Bancorp;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles.

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date:	May 8, 2015	/s/ Victor R. Santoro
		Victor R. Santoro Executive Vice President and Chief Financial Officer

EX-32.1

Exhibit 32.1

Certification of Chief Executive Officer Pursuant to 18 U.S.C. Section 1350, as Adopted

Pursuant to Section 906 of the

Sarbanes-Oxley Act of 2002

Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (18 U.S.C. Section 1350), the undersigned officer of PacWest Bancorp (the “Company”) hereby certifies that the Company’s Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2015 (the “Report”) fully complies with the requirements of Section 13(a) or 15(d), as applicable, of the Securities Exchange Act of 1934 and that the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date:	May 8, 2015	/s/ Matthew P. Wagner
		Matthew P. Wagner Chief Executive Officer

The foregoing certification is being furnished solely pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (18 U.S.C. Section 1350) and is not being filed as part of the Report or as a separate disclosure document.

EX-32.2

Exhibit 32.2

Certification of Chief Financial Officer Pursuant to 18 U.S.C. Section 1350, as Adopted

Pursuant to Section 906 of the

Sarbanes-Oxley Act of 2002

Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (18 U.S.C. Section 1350), the undersigned officer of PacWest Bancorp (the “Company”) hereby certifies that the Company’s Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2015 (the “Report”) fully complies with the requirements of Section 13(a) or 15(d), as applicable, of the Securities Exchange Act of 1934 and that the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date:	May 8, 2015	/s/ Victor R. Santoro
		Victor R. Santoro Executive Vice President and Chief Financial Officer

The foregoing certification is being furnished solely pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (18 U.S.C. Section 1350) and is not being filed as part of the Report or as a separate disclosure document.

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Goodwill and Other Intangible Assets Goodwill and Other Intangilbe Assets (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015		Mar. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]
Balance, December 31, 2014	$ 1,720,479		$ 208,743
Goodwill, Impairment Loss	7,901
Balance, March 31, 2015	$ 1,728,380	[1]	$ 208,743

[1] The increase in goodwill for the Community Banking segment and National Lending segment compared to March 31, 2014, was due primarily to $1.5 billion from the CapitalSource Inc. merger.

XML

Loans and Credit Quality (Details 7) (NonCovered [Member], USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts	30	14
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 15,068,000	$ 11,129,000
Financing Receivable, Modifications, Post-Modification Recorded Investment	14,701,000	11,129,000
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	3	4
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	1,904,000	881,000
Financing Receivables, Impaired, Troubled Debt Restructuring, Write-down	772,000	0
Consumer Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts	1	1
Financing Receivable, Modifications, Pre-Modification Recorded Investment	91,000	124,000
Financing Receivable, Modifications, Post-Modification Recorded Investment	91,000	124,000
Collateralized Loan Obligations [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts	6	4
Financing Receivable, Modifications, Pre-Modification Recorded Investment	1,399,000	3,287,000
Financing Receivable, Modifications, Post-Modification Recorded Investment	1,399,000	3,287,000
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	1	2
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	385,000	559,000
Unsecured Commercial Member [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts	1	2
Financing Receivable, Modifications, Pre-Modification Recorded Investment	195,000	38,000
Financing Receivable, Modifications, Post-Modification Recorded Investment	195,000	38,000
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	0	1
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	0	21,000
Asset Based [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	0	1
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	0	301,000
Cash Flow [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts	2	0
Financing Receivable, Modifications, Pre-Modification Recorded Investment	566,000	0
Financing Receivable, Modifications, Post-Modification Recorded Investment	387,000	0
Equipment Finance Commercial Financing Receivable [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts	4	0
Financing Receivable, Modifications, Pre-Modification Recorded Investment	4,133,000	0
Financing Receivable, Modifications, Post-Modification Recorded Investment	4,133,000	0
SBA Financing Receivable [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts	1	1
Financing Receivable, Modifications, Pre-Modification Recorded Investment	0	238,000
Financing Receivable, Modifications, Post-Modification Recorded Investment	0	238,000
Commercial Real Estate Construction Financing Receivable [Member] | Real Estate Construction [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts	1	2
Financing Receivable, Modifications, Pre-Modification Recorded Investment	2,610,000	4,927,000
Financing Receivable, Modifications, Post-Modification Recorded Investment	2,610,000	4,927,000
Real Estate Mortgage Other Receivable [Member] | Mortgage Loans on Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts	14	4
Financing Receivable, Modifications, Pre-Modification Recorded Investment	6,074,000	2,515,000
Financing Receivable, Modifications, Post-Modification Recorded Investment	5,886,000	2,515,000
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	2	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 1,519,000	$ 0

XML

Loans and Credit Quality (Details 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014	Dec. 31, 2013
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Allowance	$ 92,378	$ 81,180
Allowance for loan and lease losses	92,378	81,180	84,455	82,034
Allowance for Loan and Lease Losses, Write-offs	(10,490)	(1,550)
Allowance for Loan and Lease Loss, Recovery of Bad Debts	2,542	740
Provision for Loan and Lease Losses	15,871	(44)
Loans and Leases Receivable, Net of Deferred Income	12,272,166	4,161,067	11,882,432
Loans and Leases Receivable Net Of Deferred Income Covered And Noncovered	12,272,166	4,161,067
Mortgage Loans on Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Allowance	30,911	24,352
Real Estate Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Allowance	2,173	4,103
Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Allowance	45,794	27,740
Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Allowance	802	3,785
Purchased Credit Impaired Loans and Leases [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Allowance, Covered	12,698	21,200	13,999	21,793
Allowance for Loan and Lease Losses, Write-offs	(579)	0
Allowance for Loan and Lease Loss, Recovery of Bad Debts	11	51
Provision for Loan and Lease Losses	(733)	(644)
Financing Receivable, Allowance for Credit Losses, Acquired with Deteriorated Credit Quality	12,698	21,200
Loans and Leases Receivable, Net of Deferred Income	254,285	332,516	290,791
Financing Receivable, Acquired with Deteriorated Credit Quality	254,285	332,516
NonCovered [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Allowance	79,680	59,980	70,456	60,241
Impaired Financing Receivable, Related Allowance	12,226		10,774
Allowance for Loan and Lease Losses, Write-offs	(9,911)	(1,550)
Allowance for Loan and Lease Loss, Recovery of Bad Debts	2,531	689
Provision for Loan and Lease Losses	16,604	600
Financing Receivable, Individually Evaluated for Impairment	12,226	8,665
Financing Receivable, Collectively Evaluated for Impairment	67,454	51,315
Loans and Leases Receivable, Net of Deferred Income	12,017,881	3,828,551	11,591,641
Financing Receivable, Individually Evaluated for Impairment	175,309	93,222
Financing Receivable, Collectively Evaluated for Impairment	11,842,572	3,735,329
NonCovered [Member] | Mortgage Loans on Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Allowance			25,097	26,078
Impaired Financing Receivable, Related Allowance	1,500		693
Allowance for Loan and Lease Losses, Write-offs	(1,453)	(94)
Allowance for Loan and Lease Loss, Recovery of Bad Debts	1,295	261
Provision for Loan and Lease Losses	5,972	(1,893)
Financing Receivable, Individually Evaluated for Impairment		2,690
Financing Receivable, Collectively Evaluated for Impairment	29,411	21,662
Loans and Leases Receivable, Net of Deferred Income	5,588,430	2,320,554	5,340,560
Financing Receivable, Individually Evaluated for Impairment	59,733	58,532
Financing Receivable, Collectively Evaluated for Impairment	5,528,697	2,262,022
NonCovered [Member] | Real Estate Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Allowance			4,248	4,298
Impaired Financing Receivable, Related Allowance			69
Allowance for Loan and Lease Losses, Write-offs	0	0
Allowance for Loan and Lease Loss, Recovery of Bad Debts	632	24
Provision for Loan and Lease Losses	(2,707)	(219)
Financing Receivable, Individually Evaluated for Impairment	55	251
Financing Receivable, Collectively Evaluated for Impairment	2,118	3,852
Loans and Leases Receivable, Net of Deferred Income	328,709	240,073	307,135
Financing Receivable, Individually Evaluated for Impairment	8,639	12,926
Financing Receivable, Collectively Evaluated for Impairment	320,070	227,147
NonCovered [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Allowance			39,858	26,921
Impaired Financing Receivable, Related Allowance			9,975
Allowance for Loan and Lease Losses, Write-offs	(8,395)	(1,441)
Allowance for Loan and Lease Loss, Recovery of Bad Debts	410	377
Provision for Loan and Lease Losses	13,921	1,883
Financing Receivable, Individually Evaluated for Impairment	10,493	5,337
Financing Receivable, Collectively Evaluated for Impairment	35,301	22,403
Loans and Leases Receivable, Net of Deferred Income	6,007,067	1,201,142	5,842,463
Financing Receivable, Individually Evaluated for Impairment	103,208	17,792
Financing Receivable, Collectively Evaluated for Impairment	5,903,859	1,183,350
NonCovered [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Allowance			1,253	2,944
Impaired Financing Receivable, Related Allowance	178		37
Allowance for Loan and Lease Losses, Write-offs	(63)	(15)
Allowance for Loan and Lease Loss, Recovery of Bad Debts	194	27
Provision for Loan and Lease Losses	(582)	829
Financing Receivable, Individually Evaluated for Impairment	178	387	37
Financing Receivable, Collectively Evaluated for Impairment	624	3,398
Loans and Leases Receivable, Net of Deferred Income	93,675	66,782	101,483
Financing Receivable, Individually Evaluated for Impairment	3,729	3,972
Financing Receivable, Collectively Evaluated for Impairment	$ 89,946	$ 62,810

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Fair Value Measurements Fair Value Measurements (Details 3) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Receivable, Fair Value Disclosure	$ 12,280,982	$ 11,757,951
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Receivable, Fair Value Disclosure	12,278,803	11,755,585
Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	60,025	67,274
Fair Value, Measurements, Nonrecurring [Member] | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	0	0
Fair Value, Measurements, Nonrecurring [Member] | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	2,961	20,766
Fair Value, Measurements, Nonrecurring [Member] | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	57,064	46,508
Non Purchased Credit Impaired Loans and Leases [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	59,243	42,693
Non Purchased Credit Impaired Loans and Leases [Member] | Fair Value, Measurements, Nonrecurring [Member] | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring		0
Loans Receivable, Fair Value Disclosure	0	0
Non Purchased Credit Impaired Loans and Leases [Member] | Fair Value, Measurements, Nonrecurring [Member] | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring		2,366
Loans Receivable, Fair Value Disclosure	2,179	2,366
Non Purchased Credit Impaired Loans and Leases [Member] | Fair Value, Measurements, Nonrecurring [Member] | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	57,064	40,327
Other real estate and foreclosed assets [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	782	24,015
Other real estate and foreclosed assets [Member] | Fair Value, Measurements, Nonrecurring [Member] | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	0	0
Other real estate and foreclosed assets [Member] | Fair Value, Measurements, Nonrecurring [Member] | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	782	18,400
Other real estate and foreclosed assets [Member] | Fair Value, Measurements, Nonrecurring [Member] | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring		5,615
Cost-method Investments [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring		566
Cost-method Investments [Member] | Fair Value, Measurements, Nonrecurring [Member] | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring		0
Cost-method Investments [Member] | Fair Value, Measurements, Nonrecurring [Member] | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring		0
Cost-method Investments [Member] | Fair Value, Measurements, Nonrecurring [Member] | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring		566
Third party appraisals [Domain] | Non Purchased Credit Impaired Loans and Leases [Member] | Fair Value, Measurements, Nonrecurring [Member] | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	24,159
Third party appraisals [Domain] | Other real estate and foreclosed assets [Member] | Fair Value, Measurements, Nonrecurring [Member] | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	$ 0

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Loans and Credit Quality (Details 8) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014	Dec. 31, 2013
Purchased Credit Impaired Loans Composition [Line Items]
Loans and Leases Receivable, Net Reported Amount, Covered	$ 241,587	$ 276,792
Purchased Credit Impaired Loans and Leases [Member]
Purchased Credit Impaired Loans Composition [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount, Covered	302,828	340,639
Loan Discounts	(48,543)	(49,848)
Loans and Leases Receivable, Allowance, Covered	(12,698)	(13,999)	(21,200)	(21,793)
Loans and Leases Receivable, Net Reported Amount, Covered	241,587	276,792
Mortgage Loans on Real Estate [Member]
Purchased Credit Impaired Loans Composition [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount, Covered	268,777	299,660
Real Estate Construction [Member]
Purchased Credit Impaired Loans Composition [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount, Covered	2,540	7,743
Commercial Portfolio Segment [Member]
Purchased Credit Impaired Loans Composition [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount, Covered	31,185	32,904
Consumer Portfolio Segment [Member]
Purchased Credit Impaired Loans Composition [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount, Covered	$ 326	$ 332

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Business Segments (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014
Segment Reporting Information [Line Items]
Interest Income	$ 214,314	$ 209,696	$ 88,360
Interest expense	(15,239)	(14,713)	(2,345)
Intersegment interest income (expense), net	0	0	0
Net interest income	199,075	194,983	86,015
Provision for Loan, Lease, and Other Losses	(16,434)	(2,063)	644
Gain on securities	3,275	0	4,752
FDIC loss sharing expense, net	(4,399)	(4,360)	(11,430)
Other noninterest income	21,995	17,063	11,369
Total noninterest income	20,871	12,703	4,691
Foreclosed assets (expense) income, net	(336)	(1,938)	1,861
Intangible asset amortization	(1,501)	(1,619)	(1,364)
Acquisition, integration and reorganization costs	(2,000)	(7,381)	(2,200)
Other noninterest expense	(80,523)	(80,367)	(48,461)
Total noninterest expense	(84,360)	(91,305)	(50,164)
Intersegment noninterest income, net	0	0
Total noninterest expense, adjusted for intersegment noninterest net income	(84,360)	(91,305)
Earnings (loss) from continuing operations before taxes	119,152	114,318	41,186
Income Tax Expense (Benefit)	(46,073)	(43,261)	(15,281)
Net income before income taxes		71,057	25,905
Loss from discontinued operations before taxes	0	(105)	(1,413)
Income tax benefit	0	47	588
Net loss from discontinued operations	0	(58)	(825)
Net earnings	73,079	70,999	25,080
Operating Segments [Member]
Segment Reporting Information [Line Items]
Net earnings			25,080
Operating Segments [Member] | National Lending Segment [Member]
Segment Reporting Information [Line Items]
Interest Income	151,219	144,546	10,765
Interest expense	(53)	(46)	(77)
Intersegment interest income (expense), net	(6,721)	(6,173)	(222)
Net interest income	144,445	138,327	10,466
Provision for Loan, Lease, and Other Losses	(24,406)	(11,816)	(182)
Gain on securities	0		0
FDIC loss sharing expense, net	0	0	0
Other noninterest income	5,142	7,330	4,445
Total noninterest income	5,142	7,330	4,445
Foreclosed assets (expense) income, net	(61)	(18)	0
Intangible asset amortization	(112)	(112)	(173)
Acquisition, integration and reorganization costs	0	0	0
Other noninterest expense	(22,837)	(24,526)	(6,573)
Total noninterest expense	(23,010)	(24,656)	(6,746)
Intersegment noninterest income, net	(26,563)	(21,953)
Total noninterest expense, adjusted for intersegment noninterest net income	(49,573)	(46,609)
Earnings (loss) from continuing operations before taxes	75,608	87,232	7,983
Income Tax Expense (Benefit)	(29,282)	(34,781)	(3,331)
Net income before income taxes		52,451	4,652
Loss from discontinued operations before taxes		0	0
Income tax benefit		0	0
Net loss from discontinued operations		0	0
Net earnings	46,326	52,451	4,652
Operating Segments [Member] | Other Segments [Member]
Segment Reporting Information [Line Items]
Interest Income	139	183	0
Interest expense	(4,525)	(4,598)	(1,041)
Intersegment interest income (expense), net	0	0	0
Net interest income	(4,386)	(4,415)	(1,041)
Provision for Loan, Lease, and Other Losses	(92)	0	0
Gain on securities	0		0
FDIC loss sharing expense, net	0	0	0
Other noninterest income	7,278	2,708	27
Total noninterest income	7,278	2,708	27
Foreclosed assets (expense) income, net	(231)	366	0
Intangible asset amortization	0	0	0
Acquisition, integration and reorganization costs	(110)	0	0
Other noninterest expense	(2,481)	(4,236)	(1,603)
Total noninterest expense	(2,822)	(3,870)	(1,603)
Intersegment noninterest income, net	0	0
Total noninterest expense, adjusted for intersegment noninterest net income	(2,822)	(3,870)
Earnings (loss) from continuing operations before taxes	(22)	(5,577)	(2,617)
Income Tax Expense (Benefit)	82	5,171	1,089
Net income before income taxes		(406)	(1,528)
Loss from discontinued operations before taxes		0	0
Income tax benefit		0	0
Net loss from discontinued operations		0	0
Net earnings	60	(406)	(1,528)
Operating Segments [Member] | Community Banking Segment [Member]
Segment Reporting Information [Line Items]
Interest Income	62,956	64,967	77,595
Interest expense	(10,661)	(10,069)	(1,227)
Intersegment interest income (expense), net	6,721	6,173	222
Net interest income	59,016	61,071	76,590
Provision for Loan, Lease, and Other Losses	8,064	9,753	826
Gain on securities	3,275		4,752
FDIC loss sharing expense, net	(4,399)	(4,360)	(11,430)
Other noninterest income	9,575	7,025	6,897
Total noninterest income	8,451	2,665	219
Foreclosed assets (expense) income, net	(44)	(2,286)	1,861
Intangible asset amortization	(1,389)	(1,507)	(1,191)
Acquisition, integration and reorganization costs	(1,890)	(7,381)	(2,200)
Other noninterest expense	(55,205)	(51,605)	(40,285)
Total noninterest expense	(58,528)	(62,779)	(41,815)
Intersegment noninterest income, net	26,563	21,953
Total noninterest expense, adjusted for intersegment noninterest net income	(31,965)	(40,826)
Earnings (loss) from continuing operations before taxes	43,566	32,663	35,820
Income Tax Expense (Benefit)	(16,873)	(13,651)	(13,039)
Net income before income taxes		19,012	22,781
Loss from discontinued operations before taxes		(105)	(1,413)
Income tax benefit		47	588
Net loss from discontinued operations		(58)	(825)
Net earnings	$ 26,693	$ 18,954	$ 21,956

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Investments (Details Textual) (USD $)	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014
Schedule of Available-for-sale Securities [Line Items]
Available For Sale Securities Pledged As Collateral Amortized Cost	$ 354,700,000
Payments to Acquire Investments	(196,600,000)		(140,000,000)
Proceeds from Sale of Available-for-sale Securities	144,945,000		142,041,000
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	2,364,000	5,559,000	10,172,000
Federal Home Loan Bank stock, at cost	28,905,000	40,609,000
Net change in FLHB Stock	11,704,000		2,939,000
Redemptions of FHLB stock	15,600,000
Purchases of FHLB Stock	(3,900,000)
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, before Reclassification Adjustments, Net of Tax	4,258,000	5,559,000	12,928,000
Government agency and government-sponsored enterprise pass through securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Proceeds from Sale of Available-for-sale Securities	60,300,000		137,300,000
Available-for-sale Securities, Gross Realized Gains			4,800,000
Government agency and government-sponsored enterprise pass through securities
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Gross Realized Gains	2,600,000
Texas Municipal Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Proceeds from Sale of Available-for-sale Securities	13,900,000
Available-for-sale Securities, Gross Realized Gains	883,000
Corporate Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Proceeds from Sale of Available-for-sale Securities	67,500,000
Available-for-sale Securities, Gross Realized Losses	$ (232,000)

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Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2015

Earnings Per Share [Abstract]

Net Income Per Share

The following table presents the computations of basic and diluted net earnings per share for the periods indicated:

	Three Months Ended
	March 31, 2015			December 31, 2014			March 31, 2014
	(Dollars in thousands, except per share data)
Basic earnings per share:
Net earnings from continuing operations	$	73,079		$	71,057		$	25,905
Less: earnings allocated to unvested restricted stock(1)	(819		)	(810		)	(500		)
Net earnings from continuing operations allocated to common shares	72,260			70,247			25,405
Net (loss) earnings from discontinued operations allocated to common shares	—			(57		)	(804		)
Net earnings allocated to common shares	$	72,260		$	70,190		$	24,601
Weighted-average basic shares and unvested restricted stock outstanding	103,035			103,045			45,799
Less: weighted-average unvested restricted stock outstanding	(1,122		)	(1,132		)	(1,148		)
Weighted-average basic shares outstanding	101,913			101,913			44,651
Basic earnings per share:
Net earnings from continuing operations	$	0.71		$	0.69		$	0.57
Net loss from discontinued operations	—			—			(0.02		)
Net earnings	$	0.71		$	0.69		$	0.55
Diluted earnings per share:
Net earnings from continuing operations allocated to common shares	$	72,260		$	70,247		$	25,405
Net (loss) earnings from discontinued operations allocated to common shares	—			(57		)	(804		)
Net earnings allocated to common shares	$	72,260		$	70,190		$	24,601
Weighted-average basic shares outstanding	101,913			101,913			44,651
Diluted earnings per share:
Net earnings from continuing operations	$	0.71		$	0.69		$	0.57
Net loss from discontinued operations	—			—			(0.02		)
Net earnings	$	0.71		$	0.69		$	0.55

________________________

(1) Represents cash dividends paid to holders of unvested restricted stock, net of estimated forfeitures, plus undistributed earnings amounts available to holders of unvested restricted stock, if any.

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Subsequent Events Subsequent Events (Details 1)	3 Months Ended
	Mar. 31, 2015
Subsequent Event [Line Items]
Subsequent Event, Description	0

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Fair Value Measurements Fair Value Measurements (Details 6) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and due from banks	$ 140,873	$ 164,757
Interest-earning deposits in financial institutions	250,981	148,469
Available-for-sale Securities	1,595,409	1,567,177
Federal Home Loan Bank stock, at cost	28,905	40,609
Investment in Federal Home Loan Bank Stock, Fair Value Disclosure	28,905	40,609
Cost Method Investments	3,100	3,691
Cost Method Investments, Fair Value Disclosure	3,534	3,691
Equity Method Investments	21,226	21,461
Equity Method Investments, Fair Value Disclosure	21,475	21,700
Loans and leases, net	12,179,788	11,797,977
Loans Receivable, Fair Value Disclosure	12,280,982	11,757,951
Derivative Asset	9,749	5,234
Derivative Asset, Fair Value of Collateral	9,749	5,234
Deposits, Savings Deposits	6,353,376	6,256,190
Time Deposits	5,580,799	5,498,938
Deposits, Fair Value Disclosure	5,584,088	5,502,479
Borrowed Funds	618,156	383,402
Long-term Debt, Fair Value	618,351	383,539
Subordinated debentures	431,448	433,583
Subordinated Debt Obligations, Fair Value Disclosure	415,210	417,657
Derivative Liability		118
Derivative Liability, Fair Value of Collateral		118
Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and due from banks	140,873	164,757
Interest-earning deposits in financial institutions	250,981	148,469
Available-for-sale Securities	524	519
Investment in Federal Home Loan Bank Stock, Fair Value Disclosure	0	0
Cost Method Investments, Fair Value Disclosure	0	0
Equity Method Investments, Fair Value Disclosure	0	0
Derivative Asset, Fair Value of Collateral	0	0
Deposits, Savings Deposits	0	0
Deposits, Fair Value Disclosure	0	0
Long-term Debt, Fair Value	615,000	380,000
Subordinated Debt Obligations, Fair Value Disclosure	0	0
Derivative Liability, Fair Value of Collateral		0
Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and due from banks	0	0
Interest-earning deposits in financial institutions	0	0
Available-for-sale Securities	1,561,441	1,532,711
Investment in Federal Home Loan Bank Stock, Fair Value Disclosure	28,905	40,609
Cost Method Investments, Fair Value Disclosure	0	0
Equity Method Investments, Fair Value Disclosure	0	0
Derivative Asset, Fair Value of Collateral	9,749	5,234
Deposits, Savings Deposits	6,353,376	6,256,190
Deposits, Fair Value Disclosure	5,584,088	5,502,479
Long-term Debt, Fair Value	3,351	3,539
Subordinated Debt Obligations, Fair Value Disclosure	415,210	417,657
Derivative Liability, Fair Value of Collateral		118
Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and due from banks	0	0
Interest-earning deposits in financial institutions	0	0
Available-for-sale Securities	33,444	33,947
Investment in Federal Home Loan Bank Stock, Fair Value Disclosure	0	0
Cost Method Investments, Fair Value Disclosure	3,534	3,691
Equity Method Investments, Fair Value Disclosure	21,475	21,700
Loans Receivable, Fair Value Disclosure	12,278,803	11,755,585
Derivative Asset, Fair Value of Collateral	0	0
Deposits, Savings Deposits	0	0
Deposits, Fair Value Disclosure	0	0
Long-term Debt, Fair Value	0	0
Subordinated Debt Obligations, Fair Value Disclosure	0	0
Derivative Liability, Fair Value of Collateral		0
Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale Securities	1,595,409	1,567,177
Derivative Asset, Fair Value of Collateral	9,749	5,234
Derivative Liability, Fair Value of Collateral		118
Fair Value, Measurements, Recurring [Member] | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale Securities		519
Derivative Asset, Fair Value of Collateral	0	0
Derivative Liability, Fair Value of Collateral		0
Fair Value, Measurements, Recurring [Member] | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale Securities		1,532,711
Derivative Asset, Fair Value of Collateral	9,749	5,234
Derivative Liability, Fair Value of Collateral		118
Fair Value, Measurements, Recurring [Member] | Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale Securities		33,947
Derivative Asset, Fair Value of Collateral	0	0
Derivative Liability, Fair Value of Collateral		0
Non Purchased Credit Impaired Loans and Leases [Member] | Fair Value, Measurements, Nonrecurring [Member] | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans Receivable, Fair Value Disclosure	0	0
Non Purchased Credit Impaired Loans and Leases [Member] | Fair Value, Measurements, Nonrecurring [Member] | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans Receivable, Fair Value Disclosure	$ 2,179	$ 2,366

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Loans and Credit Quality (Details 10) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Financing Receivable Recorded Investment By Credit Risk [Line Items]
PCI loans	$ 254,285	$ 290,791
Nonclassified [Member]
Financing Receivable Recorded Investment By Credit Risk [Line Items]
PCI loans	105,195	132,288
Classified [Member]
Financing Receivable Recorded Investment By Credit Risk [Line Items]
PCI loans	149,090	158,503
Purchased Credit Impaired Loans and Leases [Member]
Financing Receivable Recorded Investment By Credit Risk [Line Items]
PCI loans	254,346	290,852
Mortgage Loans on Real Estate [Member]
Financing Receivable Recorded Investment By Credit Risk [Line Items]
PCI loans	226,502	256,489
Loans And Leases PCI Net Of Discounts And Earned Income	226,450	256,442
Mortgage Loans on Real Estate [Member] | Nonclassified [Member]
Financing Receivable Recorded Investment By Credit Risk [Line Items]
PCI loans	77,548	101,161
Mortgage Loans on Real Estate [Member] | Classified [Member]
Financing Receivable Recorded Investment By Credit Risk [Line Items]
PCI loans	148,902	155,281
Real Estate Construction [Member]
Financing Receivable Recorded Investment By Credit Risk [Line Items]
PCI loans	1,897	6,924
Loans And Leases PCI Net Of Discounts And Earned Income	1,888	6,911
Real Estate Construction [Member] | Nonclassified [Member]
Financing Receivable Recorded Investment By Credit Risk [Line Items]
PCI loans	1,888	3,901
Real Estate Construction [Member] | Classified [Member]
Financing Receivable Recorded Investment By Credit Risk [Line Items]
PCI loans	0	3,010
Commercial Portfolio Segment [Member]
Financing Receivable Recorded Investment By Credit Risk [Line Items]
PCI loans	25,664	27,155
Loans And Leases PCI Net Of Discounts And Earned Income	25,664	27,154
Commercial Portfolio Segment [Member] | Nonclassified [Member]
Financing Receivable Recorded Investment By Credit Risk [Line Items]
PCI loans	25,476	26,942
Commercial Portfolio Segment [Member] | Classified [Member]
Financing Receivable Recorded Investment By Credit Risk [Line Items]
PCI loans	188	212
Consumer Portfolio Segment [Member]
Financing Receivable Recorded Investment By Credit Risk [Line Items]
PCI loans	283	284
Loans And Leases PCI Net Of Discounts And Earned Income	283	284
Consumer Portfolio Segment [Member] | Nonclassified [Member]
Financing Receivable Recorded Investment By Credit Risk [Line Items]
PCI loans	283	284
Consumer Portfolio Segment [Member] | Classified [Member]
Financing Receivable Recorded Investment By Credit Risk [Line Items]
PCI loans	$ 0	$ 0

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Stock Based Compensation Plans Stock Based Compensation Plans (Details 1) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2015	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	1,129,445			1,108,505
Vesting period of time-based restricted stock, lower limit	3 years
Vesting period of time-based restricted stock, higher limit	4 years
PacWest 2003 Stock Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	19,686,565
Share-based compensation arrangement, number of Shares Authorized due to CapitalSource, Inc Plan	10,686,565
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	13,510,779
Share-based compensation arrangement, Number of Shares Available for Grant due to CapitalSource, Inc Compensation Plan	10,082,099
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options	34.6
Restricted Stock [Member] | Vesting Based On Service [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated Share-based Compensation Expense	3.1	$ 2.8	$ 1.6

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Business Segment Business Segments (Details 1) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015		Dec. 31, 2014	Mar. 31, 2014	Apr. 07, 2014
Loans and Leases Receivable, Net of Deferred Income	$ 12,272,166		$ 11,882,432	$ 4,161,067
Loans and Leases Receivable, Allowance	(92,378)			(81,180)
Total loans and leases, net	12,179,788		11,797,977	4,079,887
Goodwill	1,728,380	[1]	1,720,479	208,743
Core deposit and customer relationship intangibles, net	15,703		17,204	15,884
Total assets	16,643,940		16,234,605	6,517,853
Total deposits	11,934,175		11,755,128	5,369,408
Operating Segments [Member] | Community Banking Segment [Member]
Loans and Leases Receivable, Net of Deferred Income	3,349,928			3,707,308
Loans and Leases Receivable, Allowance	(40,906)			(74,833)
Total loans and leases, net	3,309,022			3,632,475
Goodwill	333,979	[1]		183,065
Core deposit and customer relationship intangibles, net	14,918			14,139
Total assets	6,553,028			5,990,162
Total deposits	12,252,851			5,415,691
Operating Segments [Member] | National Lending Segment [Member]
Loans and Leases Receivable, Net of Deferred Income	8,898,843			453,759
Loans and Leases Receivable, Allowance	(51,472)			(6,347)
Total loans and leases, net	8,847,371			447,412
Goodwill	1,394,401	[1]		25,678
Core deposit and customer relationship intangibles, net	785			1,745
Total assets	9,905,563			517,126
Total deposits	35,847			0
Operating Segments [Member] | Other Segments [Member]
Loans and Leases Receivable, Net of Deferred Income	23,395			0
Loans and Leases Receivable, Allowance	0			0
Total loans and leases, net	23,395			0
Goodwill	0	[1]		0
Core deposit and customer relationship intangibles, net	0			0
Total assets	185,349			10,565
Total deposits	(354,523)			(46,283)
Capitalsource, Inc. [Member]
Goodwill					$ 1,526,282

[1] The increase in goodwill for the Community Banking segment and National Lending segment compared to March 31, 2014, was due primarily to $1.5 billion from the CapitalSource Inc. merger.

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Fair Value Measurements Fair Value Measurements (Details 4) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Receivable, Fair Value Disclosure	$ 12,280,982	$ 11,757,951
Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Net Gain (Loss) from Nonrecurring Assets	(9,316)
Non Purchased Credit Impaired Loans and Leases [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Net Gain (Loss) from Nonrecurring Assets	(9,192)
Other real estate and foreclosed assets [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Net Gain (Loss) from Nonrecurring Assets	$ (124)

XML

Goodwill and Other Intangible Assets Goodwill and Other Intangilbe Assets (Tables)

3 Months Ended

Mar. 31, 2015

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill Disclosure

The following table presents the changes in the carrying amount of goodwill for the period indicated:    

	Goodwill
	(In thousands)
Balance, December 31, 2014	$	1,720,479
To adjust acquired CapitalSource Inc. deferred tax assets	7,901
Balance, March 31, 2015	$	1,728,380

Intangible Assets Disclosure

The following table presents the changes in CDI and CRI and the related accumulated amortization for the periods indicated:

	Three Months Ended
	March 31,			December 31,			March 31,
	2015			2014			2014
	(In thousands)
Gross Amount of CDI and CRI:
Balance, end of period	$	53,090		$	53,090		$	48,963
Accumulated Amortization:
Balance, beginning of period	(35,886		)	(34,267		)	(31,715		)
Amortization	(1,501		)	(1,619		)	(1,364		)
Balance, end of period	(37,387		)	(35,886		)	(33,079		)
Net CDI and CRI, end of period	$	15,703		$	17,204		$	15,884

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Loans and Credit Quality (Details 3) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014
Delinquent loans in loan portfolio
30-89 Days Past Due	$ 21,700	$ 8,700
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	15,800	18,800
Loans held for investment, net	12,272,166	11,882,432	4,161,067
NonCovered [Member]
Delinquent loans in loan portfolio
30-89 Days Past Due	37,804	19,406
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	15,804	18,818
Financing Receivable, Recorded Investment, Past Due	53,608	38,224
Current	11,964,273	11,553,417
Loans held for investment, net	12,017,881	11,591,641	3,828,551
NonCovered [Member] | Mortgage Loans on Real Estate [Member]
Delinquent loans in loan portfolio
30-89 Days Past Due	11,816	11,628
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	10,806	11,987
Financing Receivable, Recorded Investment, Past Due	22,622	23,615
Current	5,565,808	5,316,945
Loans held for investment, net	5,588,430	5,340,560	2,320,554
NonCovered [Member] | Real Estate Construction [Member]
Delinquent loans in loan portfolio
30-89 Days Past Due	0	0
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	0	715
Financing Receivable, Recorded Investment, Past Due	0	715
Current	328,709	306,420
Loans held for investment, net	328,709	307,135	240,073
NonCovered [Member] | Commercial Portfolio Segment [Member]
Delinquent loans in loan portfolio
30-89 Days Past Due	25,979	7,677
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	1,802	2,970
Financing Receivable, Recorded Investment, Past Due	27,781	10,647
Current	5,979,286	5,831,816
Loans held for investment, net	6,007,067	5,842,463	1,201,142
NonCovered [Member] | Consumer Portfolio Segment [Member]
Delinquent loans in loan portfolio
Loans held for investment, net	93,675	101,483	66,782
Consumer Financing Receivable [Member] | NonCovered [Member] | Consumer Portfolio Segment [Member]
Delinquent loans in loan portfolio
30-89 Days Past Due	9	101
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	3,196	3,146
Financing Receivable, Recorded Investment, Past Due	3,205	3,247
Current	90,470	98,236
Loans held for investment, net		101,483
Collateralized Loan Obligations [Member] | NonCovered [Member] | Commercial Portfolio Segment [Member]
Delinquent loans in loan portfolio
30-89 Days Past Due	1,782	878
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	424	965
Financing Receivable, Recorded Investment, Past Due	2,206	1,843
Current	392,182	437,344
Loans held for investment, net	394,388	439,187
Unsecured Commercial Member [Member] | NonCovered [Member] | Commercial Portfolio Segment [Member]
Delinquent loans in loan portfolio
30-89 Days Past Due	0	69
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	16	45
Financing Receivable, Recorded Investment, Past Due	16	114
Current	143,298	131,710
Loans held for investment, net	143,314	131,824
Asset Based [Member] | NonCovered [Member] | Commercial Portfolio Segment [Member]
Delinquent loans in loan portfolio
30-89 Days Past Due	0	0
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	0	0
Financing Receivable, Recorded Investment, Past Due	0	0
Current	1,719,777	1,794,851
Loans held for investment, net	1,719,777	1,794,851
Cash Flow [Member] | NonCovered [Member] | Commercial Portfolio Segment [Member]
Delinquent loans in loan portfolio
30-89 Days Past Due	0	0
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	0	232
Financing Receivable, Recorded Investment, Past Due	0	232
Current	2,793,184	2,459,619
Loans held for investment, net	2,793,184	2,459,851
Equipment Finance Commercial Financing Receivable [Member] | NonCovered [Member] | Commercial Portfolio Segment [Member]
Delinquent loans in loan portfolio
30-89 Days Past Due	23,409	6,525
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	0	366
Financing Receivable, Recorded Investment, Past Due	23,409	6,891
Current	890,607	962,598
Loans held for investment, net	914,016	969,489
SBA Financing Receivable [Member] | NonCovered [Member] | Commercial Portfolio Segment [Member]
Delinquent loans in loan portfolio
30-89 Days Past Due	788	205
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	1,362	1,362
Financing Receivable, Recorded Investment, Past Due	2,150	1,567
Current	40,238	45,694
Loans held for investment, net	42,388	47,261
Residential Real Estate Construction Financing Receivable [Member] | NonCovered [Member] | Real Estate Construction [Member]
Delinquent loans in loan portfolio
30-89 Days Past Due	0	0
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	0	0
Financing Receivable, Recorded Investment, Past Due	0	0
Current	122,316	96,728
Loans held for investment, net	122,316	96,728
Commercial Real Estate Construction Financing Receivable [Member] | NonCovered [Member] | Real Estate Construction [Member]
Delinquent loans in loan portfolio
30-89 Days Past Due	0	0
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	0	715
Financing Receivable, Recorded Investment, Past Due	0	715
Current	206,393	209,692
Loans held for investment, net	206,393	210,407
Hospitality [Member] | NonCovered [Member] | Mortgage Loans on Real Estate [Member]
Delinquent loans in loan portfolio
30-89 Days Past Due	0	0
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	0	0
Financing Receivable, Recorded Investment, Past Due	0	0
Current	612,089	560,219
Loans held for investment, net	612,089	560,219
SBA Loans [Member] | NonCovered [Member] | Mortgage Loans on Real Estate [Member]
Delinquent loans in loan portfolio
30-89 Days Past Due	5,582	5,530
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	5,487	4,357
Financing Receivable, Recorded Investment, Past Due	11,069	9,887
Current	377,707	366,040
Loans held for investment, net	388,776	375,927
Real Estate Other Class [Member] | NonCovered [Member] | Mortgage Loans on Real Estate [Member]
Delinquent loans in loan portfolio
30-89 Days Past Due	6,234	6,098
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	5,319	7,630
Financing Receivable, Recorded Investment, Past Due	11,553	13,728
Current	4,576,012	4,390,686
Loans held for investment, net	$ 4,587,565	$ 4,404,414

XML

Investments (Details 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost Basis	$ 1,547,015	$ 1,522,871
Available-for-sale Securities, Gross Unrealized Gain	51,805	47,908
Available-for-sale Securities, Gross Unrealized Loss	(3,411)	(3,602)
Securities available‑for‑sale	1,595,409	1,567,177
Fair Value, Measurements, Recurring [Member]
Schedule of Available-for-sale Securities [Line Items]
Securities available‑for‑sale	1,595,409	1,567,177
Government agency and government-sponsored enterprise pass through securities
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost Basis	439,696	515,902
Available-for-sale Securities, Gross Unrealized Gain	19,327	20,142
Available-for-sale Securities, Gross Unrealized Loss	(131)	(372)
Government agency and government-sponsored enterprise pass through securities | Fair Value, Measurements, Recurring [Member]
Schedule of Available-for-sale Securities [Line Items]
Securities available‑for‑sale	458,892	535,672
Government agency and government-sponsored enterprise collateralized mortgage obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost Basis	269,766	275,513
Available-for-sale Securities, Gross Unrealized Gain	6,909	3,513
Available-for-sale Securities, Gross Unrealized Loss	(451)	(1,080)
Government agency and government-sponsored enterprise collateralized mortgage obligations [Member] | Fair Value, Measurements, Recurring [Member]
Schedule of Available-for-sale Securities [Line Items]
Securities available‑for‑sale	276,224	277,946
Covered private label collateralized mortgage obligation [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost Basis	26,496	26,889
Available-for-sale Securities, Gross Unrealized Gain	7,014	7,153
Available-for-sale Securities, Gross Unrealized Loss	(66)	(95)
Covered private label collateralized mortgage obligation [Member] | Fair Value, Measurements, Recurring [Member]
Schedule of Available-for-sale Securities [Line Items]
Securities available‑for‑sale	33,444	33,947
Other Private Label Collateralized Mortgage Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost Basis	9,645	10,961
Available-for-sale Securities, Gross Unrealized Gain	52	46
Available-for-sale Securities, Gross Unrealized Loss	(47)	(93)
Other Private Label Collateralized Mortgage Obligations [Member] | Fair Value, Measurements, Recurring [Member]
Schedule of Available-for-sale Securities [Line Items]
Securities available‑for‑sale	9,650	10,914
Municipal securities
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost Basis	579,344	521,499
Available-for-sale Securities, Gross Unrealized Gain	15,708	15,899
Available-for-sale Securities, Gross Unrealized Loss	(2,199)	(1,282)
Municipal securities | Fair Value, Measurements, Recurring [Member]
Schedule of Available-for-sale Securities [Line Items]
Securities available‑for‑sale	592,853	536,116
Corporate Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost Basis	47,485	110,074
Available-for-sale Securities, Gross Unrealized Gain	683	597
Available-for-sale Securities, Gross Unrealized Loss	(423)	(562)
Corporate Debt Securities [Member] | Fair Value, Measurements, Recurring [Member]
Schedule of Available-for-sale Securities [Line Items]
Securities available‑for‑sale	47,745	110,109
Collateralized Loan Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost Basis	112,883	0
Available-for-sale Securities, Gross Unrealized Gain	922	0
Available-for-sale Securities, Gross Unrealized Loss	0	0
Securities available‑for‑sale		0
Collateralized Loan Obligations [Member] | Fair Value, Measurements, Recurring [Member]
Schedule of Available-for-sale Securities [Line Items]
Securities available‑for‑sale	113,805
US Government-sponsored Enterprises Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost Basis	36,249	36,232
Available-for-sale Securities, Gross Unrealized Gain	1,156	525
Available-for-sale Securities, Gross Unrealized Loss	0	0
US Government-sponsored Enterprises Debt Securities [Member] | Fair Value, Measurements, Recurring [Member]
Schedule of Available-for-sale Securities [Line Items]
Securities available‑for‑sale	37,405	36,757
Other securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost Basis	25,451	25,801
Available-for-sale Securities, Gross Unrealized Gain	34	33
Available-for-sale Securities, Gross Unrealized Loss	(94)	(118)
Other securities [Member] | Fair Value, Measurements, Recurring [Member]
Schedule of Available-for-sale Securities [Line Items]
Securities available‑for‑sale	$ 25,391	$ 25,716

XML

Earnings Per Share (Details 1) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015		Dec. 31, 2014		Mar. 31, 2014
Earnings Per Share [Abstract]
Income (Loss) from Continuing Operations Attributable to Parent	$ 73,079		$ 71,057		$ 25,905
Less: earnings allocated to unvested restricted stock(1)	(819)	[1]	(810)	[1]	(500)	[1]
Net earnings from continuing operations allocated to common shares	72,260		70,247		25,405
Net (loss) earnings from discontinued operations allocated to common shares	0		(57)		(804)
Net earnings allocated to common shares	$ 72,260		$ 70,190		$ 24,601
Weighted-average basic shares and unvested restricted stock outstanding	103,035		103,045		45,799
Less: weighted-average unvested restricted stock outstanding	(1,122)		(1,132)		(1,148)
Weighted-average basic shares outstanding	101,913		101,913		44,651
Net earnings from continuing operations	$ 0.71		$ 0.69		$ 0.57
Net loss from discontinued operations	$ 0.00		$ 0.00		$ (0.02)
Basic net income per share	$ 0.71		$ 0.69		$ 0.55
Net earnings allocated to common shares	72,260		70,190		24,601
Net earnings from continuing operations	$ 0.71		$ 0.69		$ 0.57
Net loss from discontinued operations	$ 0.00		$ 0.00		$ (0.02)
Diluted net income per share	$ 0.71		$ 0.69		$ 0.55

[1] Represents cash dividends paid to holders of unvested restricted stock, net of estimated forfeitures, plus undistributed earnings amounts available to holders of unvested restricted stock, if any.

XML

Acquisitions Acquisitions (Details) (USD $)	3 Months Ended		0 Months Ended
	Mar. 31, 2015		Apr. 07, 2014		Dec. 31, 2014	Mar. 31, 2014
Business Acquisition [Line Items]
Equipment leased to others under operating leases	$ 119,959,000				$ 122,506,000
Goodwill	1,728,380,000	[1]			1,720,479,000	208,743,000
Proceeds from Sale of Other Receivables	484,000,000
Capitalsource, Inc. [Member]
Business Acquisition [Line Items]
Cash and due from banks			768,553,000
Interest-earning deposits in financial institutions			60,612,000
Investments securities available-for-sale			382,797,000
FHLB stock			46,060,000
Loans and leases			6,877,427,000
Equipment leased to others under operating leases			160,015,000
Premises and equipment			12,663,000
Foreclosed assets			6,382,000
Income Tax Assets			304,856,000
Goodwill			1,526,282,000
Other intangible assets			6,720,000
Other assets			582,985,000	[2]
Total assets acquired			10,735,352,000
Noninterest-bearing deposits			4,631,000
Interest-bearing deposits			6,236,419,000
Other borrowings			992,109,000
Subordinated Debentures			300,918,000
Accrued interest payable and other liabilities			124,087,000
Total liabilities assumed			7,658,164,000
Total consideration paid			3,077,188,000
Cash paid			483,118,000
PacWest common stock issued			$ 2,594,070,000

[1] The increase in goodwill for the Community Banking segment and National Lending segment compared to March 31, 2014, was due primarily to $1.5 billion from the CapitalSource Inc. merger.

[2] (1) Includes a $484 million receivable for securities sales proceeds.

XML

Loans and Credit Quality Loans and Credit Quality (Details 5) (NonCovered [Member], USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Schedule Of Non Accrual and Performing Restructured Impaired Financing Receivables [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	$ 139,334	$ 83,621
Impaired Financing Receivable Performing Restructured Loans	35,975	35,244
Impaired Financing Receivable, Recorded Investment	175,309	118,865
Mortgage Loans on Real Estate [Member]
Schedule Of Non Accrual and Performing Restructured Impaired Financing Receivables [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	37,335	37,612
Impaired Financing Receivable Performing Restructured Loans	22,398	20,245
Impaired Financing Receivable, Recorded Investment	59,733	57,857
Real Estate Construction [Member]
Schedule Of Non Accrual and Performing Restructured Impaired Financing Receivables [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	832	1,559
Impaired Financing Receivable Performing Restructured Loans	7,807	8,996
Impaired Financing Receivable, Recorded Investment	8,639	10,555
Commercial Portfolio Segment [Member]
Schedule Of Non Accrual and Performing Restructured Impaired Financing Receivables [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	97,693	40,965
Impaired Financing Receivable Performing Restructured Loans	5,515	5,744
Impaired Financing Receivable, Recorded Investment	103,208	46,709
Consumer Portfolio Segment [Member]
Schedule Of Non Accrual and Performing Restructured Impaired Financing Receivables [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	3,474	3,485
Impaired Financing Receivable Performing Restructured Loans	255	259
Impaired Financing Receivable, Recorded Investment	$ 3,729	$ 3,744

XML

Commitments and Contingencies (Details Textual) (USD $) In Millions, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Long-term Purchase Commitment [Line Items]
Commitment To Contribute Capital	$ 13.4	$ 11.0
Private Equity Funds [Member]
Long-term Purchase Commitment [Line Items]
Purchase Commitment, Remaining Minimum Amount Committed	$ 2.8	$ 2.9
Number of funds	11	11

XML

FDIC Loss Sharing Asset FDIC Loss Sharing Asset (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015
Schedule of FDIC Loss Sharing Asset [Line Items]
FDIC loss sharing asset	$ 16,532
FDIC Indemnification True Up	7,290
NonSingle Family Covered Assets	213,486	[1]
Single Family Covered Assets	95,480
Affinity Bank [Member]
Schedule of FDIC Loss Sharing Asset [Line Items]
FDIC loss sharing asset	140
NonSingle Family Covered Assets	105,614	[1]
Single Family Covered Assets	10,932
Los Padres Bank [Member]
Schedule of FDIC Loss Sharing Asset [Line Items]
FDIC loss sharing asset	8,161
NonSingle Family Covered Assets	73,072	[1]
Single Family Covered Assets	55,447
Western Commercial Bank [Member]
Schedule of FDIC Loss Sharing Asset [Line Items]
FDIC loss sharing asset	710
FDIC Indemnification True Up	1,773
NonSingle Family Covered Assets	8,799	[1]
San Luis Trust Bank [Member]
Schedule of FDIC Loss Sharing Asset [Line Items]
FDIC loss sharing asset	7,521
FDIC Indemnification True Up	5,517
NonSingle Family Covered Assets	26,001	[1]
Single Family Covered Assets	$ 29,101

[1] (1) Excludes securities

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Loans and Credit Quality (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014	Dec. 31, 2013
Financing Receivable, Recorded Investment [Line Items]
Non-PCI loans and leases	$ 12,047,946	$ 11,904,684
PCI loans	254,285	290,791
Loans and Leases Receivable, Deferred Income	(30,126)	(22,252)
Loans held for investment, net	12,272,166	11,882,432	4,161,067
Loans and Leases Receivable, Allowance	(92,378)		(81,180)
Loans and leases, net	12,179,788	11,797,977
Loans and Leases Receivable, Net Reported Amount, Covered	241,587	276,792
Total loans and leases, net	12,179,788	11,797,977	4,079,887
Mortgage Loans on Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Non-PCI loans and leases	5,828,439	5,607,316
PCI loans	226,502	256,489
Loans and Leases Receivable, Allowance	(30,911)		(24,352)
Real Estate Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Non-PCI loans and leases	333,005	316,086
PCI loans	1,897	6,924
Loans and Leases Receivable, Allowance	(2,173)		(4,103)
Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Non-PCI loans and leases	6,046,946	5,879,575
PCI loans	25,664	27,155
Loans and Leases Receivable, Allowance	(45,794)		(27,740)
Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Non-PCI loans and leases	93,902	101,707
PCI loans	283	284
Loans and Leases Receivable, Allowance	(802)		(3,785)
NonCovered [Member]
Financing Receivable, Recorded Investment [Line Items]
Non-PCI loans and leases		11,613,832
Loans and Leases Receivable, Deferred Income	(30,065)	(22,191)
Loans held for investment, net	12,017,881	11,591,641	3,828,551
Loans and Leases Receivable, Allowance	(79,680)	(70,456)	(59,980)	(60,241)
Loans and leases, net	11,938,201	11,521,185
NonCovered [Member] | Mortgage Loans on Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Non-PCI loans and leases	5,601,937	5,350,827
Loans held for investment, net	5,588,430	5,340,560	2,320,554
Loans and Leases Receivable, Allowance		(25,097)		(26,078)
NonCovered [Member] | Real Estate Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Non-PCI loans and leases	331,108	309,162
Loans held for investment, net	328,709	307,135	240,073
Loans and Leases Receivable, Allowance		(4,248)		(4,298)
NonCovered [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Non-PCI loans and leases	6,021,282	5,852,420
Loans held for investment, net	6,007,067	5,842,463	1,201,142
Loans and Leases Receivable, Allowance		(39,858)		(26,921)
NonCovered [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Non-PCI loans and leases	93,619	101,423
Loans held for investment, net	93,675	101,483	66,782
Loans and Leases Receivable, Allowance		(1,253)		(2,944)
Purchased Credit Impaired Loans and Leases [Member]
Financing Receivable, Recorded Investment [Line Items]
PCI loans	254,346	290,852
Loans and Leases Receivable, Deferred Income	(61)	(61)
Loans held for investment, net	254,285	290,791	332,516
Loans and Leases Receivable, Allowance, Covered	(12,698)	(13,999)	(21,200)	(21,793)
Loans and Leases Receivable, Net Reported Amount, Covered	241,587	276,792
NonPCI and PCI Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Non-PCI loans and leases	$ 12,302,292

XML

Discontinued Operations Discontinued Operations Notes

3 Months Ended

Mar. 31, 2015

Discontinued Operations and Disposal Groups [Abstract]

Discontinued Operations

Note 2.  Discontinued Operations    

Discontinued operations include the income and expense related to Electronic Payment Services ("EPS"), a discontinued division of the Bank acquired in connection with the First California Financial Group, Inc. ("FCAL") acquisition. Liabilities of the EPS division were $20.4 million and $21.3 million at March 31, 2015 and December 31, 2014, and consisted primarily of noninterest‑bearing deposits, and are included in the condensed consolidated balance sheets under the caption “Accrued interest payable and other liabilities.” For segment reporting purposes, the EPS division is included in our Community Banking segment.

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FDIC Loss Sharing Asset FDIC Loss Sharing Assets (Details Textuals)	3 Months Ended
	Mar. 31, 2015
Schedule of FDIC Loss Sharing Asset [Line Items]
FDIC Indemnification rate on covered assets	80.00%
Recovery rate of assuming bank on covered assets	80.00%

XML

Investments (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss	$ 150,881	$ 106,602
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	(1,866)	(882)
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss	74,198	173,724
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	(1,545)	(2,720)
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss	225,079	280,326
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	(3,411)	(3,602)
Government agency and government-sponsored enterprise pass through securities
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss	5,031	10,711
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	(42)	(13)
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss	10,085	27,100
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	(89)	(359)
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss	15,116	37,811
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	(131)	(372)
Government agency and government-sponsored enterprise collateralized mortgage obligations [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss	0	23,908
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	0	(73)
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss	14,403	40,652
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	(451)	(1,007)
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss	14,403	64,560
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	(451)	(1,080)
Covered private label collateralized mortgage obligation [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss	726	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	(6)	0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss	643	1,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	(60)	(95)
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss	1,369	1,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	(66)	(95)
Other Private Label Collateralized Mortgage Obligations [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss	1,206	1,618
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	(46)	(93)
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss	360	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	(1)	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss	1,566	1,618
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	(47)	(93)
US States and Political Subdivisions Debt Securities [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss	112,361	11,854
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	(1,277)	(66)
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss	38,687	84,822
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	(922)	(1,216)
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss	151,048	96,676
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	(2,199)	(1,282)
Corporate Debt Securities [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss	25,104	52,071
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	(423)	(547)
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss	0	10,131
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	0	(15)
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss	25,104	62,202
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	(423)	(562)
Other securities [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss	6,453	6,440
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	(72)	(90)
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss	10,020	10,019
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	(22)	(28)
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss	16,473	16,459
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	$ (94)	$ (118)

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FDIC Loss Sharing Asset FDIC Loss Sharing Asset (Tables)

3 Months Ended

Mar. 31, 2015

FDIC Loss-Sharing Arrangements [Abstract]

Schedule of Composition of Loss Sharing Assets and True Up Liability

The following table presents information about the composition of the FDIC loss sharing asset, the true‑up liability, and the non‑single family and the single family covered assets as of the date indicated:

	March 31, 2015
	Affinity Bank		Los Padres Bank		Western Commercial Bank		San Luis Trust Bank		Total
	(In thousands)
FDIC loss sharing asset	$	140	$	8,161	$	710	$	7,521	$	16,532
True‑up liability	N/A		N/A		$	1,773	$	5,517	$	7,290
Non-single family covered assets(1)	$	105,614	$	73,072	$	8,799	$	26,001	$	213,486
Single family covered assets	$	10,932	$	55,447	N/A		$	29,101	$	95,480
Loss sharing expiration dates:
Non‑single family	3rd Quarter 2014		3rd Quarter 2015		4th Quarter 2015		1st Quarter 2016
Single family	3rd Quarter 2019		3rd Quarter 2020		N/A		1st Quarter 2021
Loss recovery expiration dates:
Non‑single family	3rd Quarter 2017		3rd Quarter 2018		4th Quarter 2018		1st Quarter 2019
Single family	3rd Quarter 2019		3rd Quarter 2020		N/A		1st Quarter 2021

_________________________

(1) Excludes securities

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Foreclosed Assets Foreclosed Assets (Tables)

3 Months Ended

Mar. 31, 2015

Other Real Estate Owned Net Covered and NonCovered Including Foreclosed Assets [Abstract]

Other Real Estate and Foreclosed Assets

The following table summarizes foreclosed assets at the dates indicated:

Property Type:	March 31, 2015		December 31, 2014
	(In thousands)
Commercial real estate	$	1,036	$	2,449
Construction and land development	18,942		24,759
Multi‑family	4,964		4,823
Single family residence	3,253		3,392
Total other real estate owned, net	28,195		35,423
Other foreclosed assets	7,745		8,298
Total foreclosed assets, net(1)	$	35,940	$	43,721

Other Foreclosed Assets Rollforward

The following table presents the changes in foreclosed assets, net of the valuation allowance, for the period indicated:

	Foreclosed Assets
	(In thousands)
Balance, December 31, 2014	$	43,721
Foreclosures	394
Provision for losses	(124		)
Reductions related to sales	(8,051		)
Balance, March 31, 2015	$	35,940

XML

Loans and Credit Quality (Details 9) (Purchased Credit Impaired Loans and Leases [Member], Covered [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Carrying Amount, Net		$ 276,792
Accretable yield		(106,856)
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Carrying Amount, Net	241,587	276,792
Accretable yield	(102,863)	(106,856)
Carrying Amount [Member]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Accretion	10,183
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Disposals of Loans	(46,121)
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Allowance for Loan Losses, Decreases	0
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Provision for Loan Losses	733
Accretable Yield [Member]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Accretion	10,183
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Disposals of Loans	0
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Allowance for Loan Losses, Decreases	(6,190)
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Provision for Loan Losses	$ 0

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Investments (Details 3) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Available-for-sale Securities, Amortized Cost Basis [Abstract]
Available-for-sale Securities, Debt Maturities, Next Twelve Months, Amortized Cost Basis	$ 18,358
Available-for-sale Securities, Debt Maturities, Year Two Through Five, Amortized Cost Basis	76,173
Available-for-sale Securities, Debt Maturities, Year Six Through Ten, Amortized Cost Basis	276,933
Available-for-sale Securities, Debt Maturities, after Ten Years, Amortized Cost Basis	1,175,551
Available-for-sale Securities, Amortized Cost Basis	1,547,015	1,522,871
Fair Value Disclosures [Abstract]
Available-for-sale Securities, Debt Maturities, Next Twelve Months, Fair Value	18,538
Available-for-sale Securities, Debt Maturities, Year Two Through Five, Fair Value	76,515
Available-for-sale Securities, Debt Maturities, Year Six Through Ten, Fair Value	287,023
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value	1,213,333
Available-for-sale Securities	$ 1,595,409	$ 1,567,177

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Borrowings (Tables)

3 Months Ended

Mar. 31, 2015

Borrowings Subordinated Debentures And Brokered Deposits [Abstract]

Schedule of Debt

The following table summarizes our borrowings as of the dates indicated:

	March 31, 2015				December 31, 2014
	Amount		Rate		Amount		Rate
	(Dollars in thousands)
Non‑recourse debt	$	3,156	6.34	%	$	3,402	6.43	%
FHLB overnight advances	615,000		0.24	%	380,000		0.27	%
Total borrowings	$	618,156			$	383,402

Borrowings Subordinated Debentures And Brokered Deposits Disclosure

The following table summarizes the terms of each issuance of subordinated debentures outstanding as of the dates indicated:

	March 31, 2015					December 31, 2014
											Date	Maturity	Rate Index
Series	Amount			Rate		Amount			Rate		Issued	Date	(Quarterly Reset)
	(Dollars in thousands)
Trust V	$	10,310		3.37	%	$	10,310		3.33	%	8/15/2003	9/17/2033	3 month LIBOR + 3.10
Trust VI	10,310			3.32	%	10,310			3.29	%	9/3/2003	9/15/2033	3 month LIBOR + 3.05
Trust CII	5,155			3.22	%	5,155			3.19	%	9/17/2003	9/17/2033	3 month LIBOR + 2.95
Trust VII	61,856			3.00	%	61,856			2.98	%	2/5/2004	4/23/2034	3 month LIBOR + 2.75
Trust CIII	20,619			1.96	%	20,619			1.93	%	8/15/2005	9/15/2035	3 month LIBOR + 1.69
Trust FCCI	16,495			1.87	%	16,495			1.84	%	1/25/2007	3/15/2037	3 month LIBOR + 1.60
Trust FCBI	10,310			1.82	%	10,310			1.79	%	9/30/2005	12/15/2035	3 month LIBOR + 1.55
Trust CS 2005-1 (1)	82,475			2.22	%	82,475			2.19	%	11/21/2005	12/15/2035	3 month LIBOR + 1.95
Trust CS 2005-2 (1)	128,866			2.20	%	128,866			2.18	%	12/14/2005	1/30/2036	3 month LIBOR + 1.95
Trust CS 2006-1 (1)	51,545			2.20	%	51,545			2.18	%	2/22/2006	4/30/2036	3 month LIBOR + 1.95
Trust CS 2006-2 (1)	51,550			2.20	%	51,550			2.18	%	9/27/2006	10/30/2036	3 month LIBOR + 1.95
Trust CS 2006-3 (1)(3)	27,651			2.10	%	31,188			2.14	%	9/29/2006	10/30/2036	3 month EURIBOR + 2.05
Trust CS 2006-4 (1)	16,470			2.20	%	16,470			2.18	%	12/5/2006	1/30/2037	3 month LIBOR + 1.95
Trust CS 2006-5 (1)	6,650			2.20	%	6,650			2.18	%	12/19/2006	1/30/2037	3 month LIBOR + 1.95
Trust CS 2007-2 (1)	39,177			2.20	%	39,177			2.18	%	6/13/2007	7/30/2037	3 month LIBOR + 1.95
Gross subordinated debentures	539,439					542,976
Unamortized discount (2)	(107,991		)			(109,393		)
Net subordinated debentures	$	431,448				$	433,583

___________________

(1) Acquired in the CapitalSource Inc. merger.

(2) Amount represents the fair value adjustment on trust preferred securities assumed in the CapitalSource Inc. and FCAL acquisitions.

(3) Denomination is in Euros with a value of €25.8 million.

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Commitments and Contingencies Commitments and Contingencies Disclosure (Tables)

3 Months Ended

Mar. 31, 2015

Commitments and Contingencies Disclosure [Abstract]

Commitments Disclosure

The following table presents a summary of the financial instruments described above as of the dates indicated:

	March 31, 2015		December 31, 2014
	(In thousands)
Loan commitments to extend credit	$	2,122,749	$	1,921,067
Standby letters of credit	97,540		88,495
Commitments to purchase equipment being acquired for lease to others	23,535		12,839
	$	2,243,824	$	2,022,401

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Organization

3 Months Ended

Mar. 31, 2015

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Organization

Note 1.  Organization    

PacWest Bancorp is a bank holding company registered under the Bank Holding Company Act of 1956, as amended. Our principal business is to serve as the holding company for our Los Angeles‑based wholly owned banking subsidiary, Pacific Western Bank, which we refer to as “Pacific Western” or the “Bank.” When we say “we,” “our,” or the “Company,” we mean PacWest Bancorp together with its subsidiaries on a consolidated basis. When we refer to “PacWest” or to the holding company, we are referring to PacWest Bancorp, the parent company, on a stand‑alone basis. As of March 31, 2015, we had total assets of $16.6 billion, gross loans and leases of $12.3 billion, total deposits of $11.9 billion and total stockholders' equity of $3.5 billion.

Pacific Western is a full-service commercial bank offering a broad range of banking products and services including accepting demand, money market, and time deposits and originating loans and leases, including an array of commercial real estate loans and commercial lending products. The Bank strives to attract locally generated and relationship-based deposits, with 80 full-service branches located primarily in Southern California, extending from San Diego County to California’s Central Coast. The Bank also operates three banking offices in the San Francisco Bay area and four banking offices in the Central Valley. Our targeted collateral for real estate loan offerings includes healthcare properties, office properties, industrial properties, multifamily properties, hospitality properties, and retail properties. Our commercial loan products include equipment loans and leases, asset-based loans, loans to finance companies, and loans secured by borrower future cash flows.

As a result of the CapitalSource Inc. merger, Pacific Western Bank established the CapitalSource Division, which we also refer to as the National Lending segment. The CapitalSource Division lends throughout the United States, providing middle-market businesses asset-secured loans, equipment-secured loans and leases, and cash flow loans and providing real estate loans secured by various property types. The Bank's leasing operation, Pacific Western Equipment Finance, and its group specializing in asset-based lending, CapitalSource Business Finance Group (formerly BFI Business Finance and First Community Financial), are part of the CapitalSource Division. The CapitalSource Division’s loan and lease origination efforts are conducted through offices located in Chevy Chase, Maryland; Los Angeles and San Jose, California; St. Louis, Missouri; Denver, Colorado; Chicago, Illinois; New York, New York; and Midvale, Utah. When we refer to "CapitalSource Inc." we are referring to the company acquired on April 7, 2014 and when we refer to the "CapitalSource Division" we are referring to a division of the Bank that specializes in middle-market lending on a nationwide basis.

We generate our revenue primarily from interest received on loans and leases and, to a lesser extent, from interest received on investment securities, and fees received in connection with deposit services, extending credit and other services offered, including foreign exchange services. Our major operating expenses include interest paid by the Bank on deposits and borrowings, compensation and general operating expenses.

We have completed 27 acquisitions from May 2000 through March 31, 2015, including the acquisition of CapitalSource Inc. Since 2000, our acquisitions have been accounted for using the acquisition method of accounting and, accordingly, the operating results of the acquired entities have been included in the consolidated financial statements from their respective acquisition dates. See Note 3, Acquisitions, for more information about the CapitalSource Inc. merger.

Square 1 Financial, Inc. Merger Announcement

On March 2, 2015, PacWest announced the signing of an agreement and plan of merger (the “Agreement”) whereby PacWest and Square 1 Financial, Inc. (“Square 1”) will merge in a transaction valued at approximately $849 million. The surviving company will be PacWest Bancorp and the surviving subsidiary bank will be Pacific Western Bank. The Square 1 lending operations will continue to do business under the name Square 1 as a division of Pacific Western Bank.

Under the terms of the Agreement, Square 1 stockholders will receive 0.5997 shares of PacWest common stock for each share of Square 1 common stock. The total value of the per share merger consideration is $27.49, based on the $45.84 closing price of PacWest common stock on February 27, 2015, the last trading day before the transaction was announced.

As of December 31, 2014, on a pro forma consolidated basis, after giving effect to the Square 1 merger, the Company would have had approximately $19.8 billion in assets with 80 branches throughout California and one branch in North Carolina.

The transaction, currently expected to close in the fourth quarter of 2015, is subject to customary conditions, including the approval of bank regulatory authorities and the Square 1 stockholders.

Significant Accounting Policies

Except as discussed below, our accounting policies are described in Note 1, Nature of Operations and Summary of Significant Accounting Policies, of our audited consolidated financial statements included in our Annual Report on Form 10-K for the year ended December 31, 2014 as filed with the Securities and Exchange Commission ("Form 10-K").

Accounting Standard Adopted in 2015

Effective January 1, 2015, the Company adopted new accounting guidance for investments in affordable housing projects that qualify for the low-income housing tax credit. As a result of the adoption of this new guidance, the Company made an accounting policy election to amortize the initial cost of its qualifying investments in proportion to the tax credits and other benefits received and to present the amortization as a component of income tax expense, referred to as the proportional amortization method. Previously, investments in low-income housing tax credits were accounted for under the equity method and such amortization was presented in other expense. The guidance was required to be applied retrospectively and accordingly, prior period amounts for other expense and tax expense have been revised to conform with the current period presentation. The revised amortization amounts for prior periods were not material.

The retrospective application of the adoption of the new accounting guidance for the proportional amortization method resulted in a cumulative effect on retained earnings of a reduction of $195,000.

Basis of Presentation

Our interim consolidated financial statements are prepared in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”) for interim financial information and pursuant to the requirements for reporting on Form 10-Q and Article 10 of Regulation S-X of the Securities Exchange Act of 1934. Accordingly, certain disclosures accompanying annual consolidated financial statements are omitted. In the opinion of management, all adjustments and eliminations, consisting solely of normal recurring accruals, considered necessary for the fair presentation of financial statements for the interim periods, have been included. The current period's results of operations are not necessarily indicative of the results that ultimately may be achieved for the year. The interim consolidated financial statements and notes thereto should be read in conjunction with the audited consolidated financial statements and notes thereto included in our Form 10-K.

The accompanying financial statements reflect our consolidated accounts. All significant intercompany accounts and transactions have been eliminated.

Use of Estimates

We have made a number of estimates and assumptions relating to the reporting of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements and the reported amounts of revenue and expenses during the reporting period to prepare these condensed consolidated financial statements in conformity with U.S. GAAP. Material estimates subject to change in the near term include, among other items, the allowance for credit losses, the carrying value and useful lives of intangible assets, the carrying value of the FDIC loss sharing asset, the realization of deferred tax assets, and the fair value estimates of assets acquired and liabilities assumed in acquisitions. These estimates may be adjusted as more current information becomes available, and any adjustment may be significant.

As described in Note 3, Acquisitions, the acquired assets and liabilities of CapitalSource Inc. were measured at their estimated fair values. We made significant estimates and exercised significant judgment in estimating fair values and accounting for such acquired assets and assumed liabilities.

Reclassifications

Certain prior period amounts have been reclassified to conform to the current period's presentation format. On the statements of earnings, the "Other expense" category includes loan-related legal expenses which were previously reported within the "Other professional services" category. On the balance sheets, the "Other assets" category includes "FDIC loss sharing asset," which was previously reported as a separate category. These reclassifications did not affect previously reported net earnings.

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Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2015

Fair Value Disclosures [Abstract]

Fair Value, Assets Measured on Recurring Basis [Table Text Block]

The following tables present information on the assets measured and recorded at fair value on a recurring basis as of the dates indicated:

	Fair Value Measurements as of
	March 31, 2015
Measured on a Recurring Basis:	Total		Level 1		Level 2		Level 3
	(In thousands)
Securities available‑for‑sale:
Government agency and government‑sponsored enterprise
pass-through securities	$	458,892	$	—	$	458,892	$	—
Government agency and government‑sponsored enterprise
collateralized mortgage obligations	276,224		—		276,224		—
Covered private label CMOs	33,444		—		—		33,444
Other private label CMOs	9,650		—		9,650		—
Municipal securities	592,853		—		592,853		—
Corporate debt securities	47,745		—		47,745		—
Collateralized loan obligations	113,805		—		113,805		—
Government‑sponsored enterprise debt securities	37,405		—		37,405		—
Other securities	25,391		524		24,867		—
Total securities available-for-sale	1,595,409		524		1,561,441		33,444
Derivative assets	9,749		—		9,749		—
Total recurring assets	$	1,605,158	$	524	$	1,571,190	$	33,444

	Fair Value Measurements as of
	December 31, 2014
Measured on a Recurring Basis:	Total		Level 1		Level 2		Level 3
	(In thousands)
Securities available‑for‑sale:
Government agency and government‑sponsored enterprise
pass-through securities	$	535,672	$	—	$	535,672	$	—
Government agency and government‑sponsored enterprise
collateralized mortgage obligations	277,946		—		277,946		—
Covered private label CMOs	33,947		—		—		33,947
Other private label CMOs	10,914		—		10,914		—
Municipal securities	536,116		—		536,116		—
Corporate debt securities	110,109		—		110,109		—
Government‑sponsored enterprise debt securities	36,757		—		36,757		—
Other securities	25,716		519		25,197		—
Total securities available-for-sale	1,567,177		519		1,532,711		33,947
Derivative assets	5,234		—		5,234		—
Total recurring assets	$	1,572,411	$	519	$	1,537,945	$	33,947
Derivative liabilities	$	118	$	—	$	118	$	—

Fair Value, Assets and Liabilities Measured on Nonrecurring Basis, Valuation Techniques [Table Text Block]

The following table presents information about quantitative inputs and assumptions used to determine the fair values provided by our third party pricing service for our Level 3 covered private label CMOs measured at fair value on a recurring basis as of March 31, 2015:

	Covered Private Label CMOs
Unobservable Inputs:	Range of Inputs	Weighted Average Input
Voluntary annual prepayment speeds	0% - 34.4%	5.7%
Annual default rates	0% - 42.7%	2.9%
Loss severity rates	0% - 71.2%	30.2%
Discount rates	0% - 22.6%	5.6%

Fair Value, Assets Measured on Recurring Basis, Significant Unobservable Inputs (Level 3) Reconciliation

The following table summarizes activity for assets measured at fair value on a recurring basis that are categorized as Level 3 for the period indicated:

	Covered Private Label CMOs
	(In thousands)
Balance, December 31, 2014	$	33,947
Total realized in earnings	154
Total unrealized loss in comprehensive income	(109		)
Net settlements	(548		)
Balance, March 31, 2015	$	33,444

Assets carried at fair value on a nonrecurring basis

The following tables present assets measured at fair value on a non‑recurring basis as of the dates indicated:

	Fair Value Measurement as of
	March 31, 2015
	Total		Level 1		Level 2		Level 3
Measured on a Non‑Recurring Basis:	(In thousands)
Impaired Non‑PCI loans	$	59,243	$	—	$	2,179	$	57,064
Other real estate owned	782		—		782		—
Total non-recurring	$	60,025	$	—	$	2,961	$	57,064

	Fair Value Measurement as of
	December 31, 2014
	Total		Level 1		Level 2		Level 3
Measured on a Non‑Recurring Basis:	(In thousands)
Impaired Non‑PCI loans	$	42,693	$	—	$	2,366	$	40,327
Other real estate owned	24,015		—		18,400		5,615
Investments carried at cost	566		—		—		566
Total non-recurring	$	67,274	$	—	$	20,766	$	46,508

Net Losses (Gains) on Nonrecurring Assets [Table Text Block]

The following table presents losses recognized on assets measured on a nonrecurring basis for the period indicated:

	Three Months Ended
	March 31, 2015
Loss on Assets Measured on a Non‑Recurring Basis:	(In thousands)
Impaired Non‑PCI loans	$	(9,192	)
Other real estate owned	(124		)
Total net loss	$	(9,316	)

Fair Value Inputs, Assets, Quantitative Information

The following table presents the valuation methodology and unobservable inputs for Level 3 assets measured at fair value on a nonrecurring basis as of March 31, 2015:

Asset	Fair Value (In thousands)		Valuation Technique	Unobservable Inputs	Range	Weighted Average
Impaired Non-PCI loans	$	32,905	Discounted cash flows	Discount rates	2.75% - 10.46%	6.73%
	24,159		Appraisals	No discounts
Total non-recurring Level 3	$	57,064

Fair Value, by Balance Sheet Grouping

The following tables present a summary of the carrying values and estimated fair values of certain financial instruments as of the dates indicated:

	March 31, 2015
	Carrying or Contract		Estimated Fair Value
	Amount		Total		Level 1		Level 2		Level 3
	(In thousands)
Financial Assets:
Cash and due from banks	$	140,873	$	140,873	$	140,873	$	—	$	—
Interest‑earning deposits in financial institutions	250,981		250,981		250,981		—		—
Securities available‑for‑sale	1,595,409		1,595,409		524		1,561,441		33,444
Investment in FHLB stock	28,905		28,905		—		28,905		—
Investments carried at cost	3,100		3,534		—		—		3,534
Investments accounted for under the equity method	21,226		21,475		—		—		21,475
Loans and leases, net	12,179,788		12,280,982		—		2,179		12,278,803
Derivative assets	9,749		9,749		—		9,749		—
Financial Liabilities:
Deposits:
Demand, money market, interest checking, and savings deposits	6,353,376		6,353,376		—		6,353,376		—
Time deposits	5,580,799		5,584,088		—		5,584,088		—
Borrowings	618,156		618,351		615,000		3,351		—
Subordinated debentures	431,448		415,210		—		415,210		—

	December 31, 2014
	Carrying or Contract		Estimated Fair Value
	Amount		Total		Level 1		Level 2		Level 3
	(In thousands)
Financial Assets:
Cash and due from banks	$	164,757	$	164,757	$	164,757	$	—	$	—
Interest‑earning deposits in financial institutions	148,469		148,469		148,469		—		—
Securities available‑for‑sale	1,567,177		1,567,177		519		1,532,711		33,947
Investment in FHLB stock	40,609		40,609		—		40,609		—
Investments carried at cost	3,691		3,691		—		—		3,691
Investments accounted for under the equity method	21,461		21,700		—		—		21,700
Loans and leases, net	11,797,977		11,757,951		—		2,366		11,755,585
Derivative assets	5,234		5,234		—		5,234		—
Financial Liabilities:
Deposits:
Demand, money market, interest checking, and savings deposits	6,256,190		6,256,190		—		6,256,190		—
Time deposits	5,498,938		5,502,479		—		5,502,479		—
Borrowings	383,402		383,539		380,000		3,539		—
Subordinated debentures	433,583		417,657		—		417,657		—
Derivative liabilities	118		118		—		118		—

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Goodwill and Other Intangible Assets Goodwill and Other Intangible Assets (Details 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	$ 53,090	$ 53,090	$ 48,963
Finite-Lived Intangible Assets, Accumulated Amortization	(35,886)	(34,267)	(31,715)
Amortization of Intangible Assets	(1,501)	(1,619)	(1,364)
Finite-Lived Intangible Assets, Accumulated Amortization	(37,387)	(35,886)	(33,079)
Finite-Lived Intangible Assets, Net	$ 15,703	$ 17,204	$ 15,884

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Loans and Credit Quality (Details 6) (NonCovered [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Sep. 30, 2014	Mar. 31, 2014	Dec. 31, 2014
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Related Allowance	$ 12,226			$ 10,774
Impaired Financing Receivable, Recorded Investment	175,309			118,865
Impaired Financing Receivable, Unpaid Principal Balance	209,948			150,620
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	12,226		8,665
Impaired Financing Receivable, Average Recorded Investment		113,090	74,904
Impaired Financing Receivable, Interest Income, Accrual Method		657	281
Financing Receivable, Individually Evaluated for Impairment	175,309		93,222
Hospitality [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	1,930			1,946
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	1,930			1,945
Impaired Financing Receivable, Related Allowance	31			47
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	8,088			6,366
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	10,096			7,593
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	1,930		5,658
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	19		20
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment		7,836	2,971
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method		0	0
SBA Loans [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	0			0
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	0			0
Impaired Financing Receivable, Related Allowance	0			0
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	10,919			11,141
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	15,030			14,708
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	0		1,092
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	0		15
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment		9,836	2,519
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method		0	0
Real Estate Mortgage Other Receivable [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	12,986			9,136
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	13,169			9,233
Impaired Financing Receivable, Related Allowance	1,469			646
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	25,810			29,268
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	39,548			40,643
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	12,783		16,174
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	136		119
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment		24,219	23,549
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method		80	63
Residential Real Estate Construction Financing Receivable [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	759			763
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	759			763
Impaired Financing Receivable, Related Allowance	41			46
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	20			21
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	19			19
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	759		774
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	4		4
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment		20	0
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method		0	0
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	403			1,128
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	401			4,934
Impaired Financing Receivable, Related Allowance	14			23
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	7,457			8,643
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	7,571			8,749
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	403		5
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	5		0
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment		7,457	5,491
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method		271	25
Collateralized Loan Obligations [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	4,811			4,630
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	5,486			5,246
Impaired Financing Receivable, Related Allowance	3,497			3,771
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	3,324			5,566
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	4,234			6,877
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	4,646		3,765
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	33		6
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment		3,324	4,861
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method		48	6
Unsecured Commercial Member [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	1,055			912
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	1,067			924
Impaired Financing Receivable, Related Allowance	913			799
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	519			725
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	564			809
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	1,055		742
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	11		6
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment		519	326
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method		1	0
Asset Based [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	47			137
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	157			247
Impaired Financing Receivable, Related Allowance	47			137
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	4,111			4,436
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	5,220			5,415
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	47		304
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	0		0
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment		4,111	0
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method		0	0
Cash Flow [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	14,974			15,578
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	17,694			17,970
Impaired Financing Receivable, Related Allowance	2,522			2,667
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	198			387
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	735			919
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	14,973		0
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	0		0
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment		198	0
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method		0	0
Equipment Finance Commercial Financing Receivable [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	9,347			6,956
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	9,764			7,268
Impaired Financing Receivable, Related Allowance	3,514			2,601
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	61,694			4,175
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	67,850			7,528
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	4,581		0
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	0		0
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment		7,537	220
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method		0	0
SBA Financing Receivable [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	0			0
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	0			0
Impaired Financing Receivable, Related Allowance	0			0
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	3,128			3,207
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	4,762			4,920
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	0		919
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	0		10
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment		3,128	3,132
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method		45	2
Consumer Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	383			143
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	386			142
Impaired Financing Receivable, Related Allowance	178			37
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	3,346			3,601
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	3,506			3,768
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	383		2,151
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	4		4
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment		3,345	251
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method		0	1
Impaired Financing Receivable, Recorded Investment	3,729			3,744
Impaired Financing Receivable, Unpaid Principal Balance	3,892			3,910
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	178		387	37
Impaired Financing Receivable, Average Recorded Investment		3,728	2,402
Impaired Financing Receivable, Interest Income, Accrual Method		4	5
Financing Receivable, Individually Evaluated for Impairment	3,729		3,972
Mortgage Loans on Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Related Allowance	1,500			693
Impaired Financing Receivable, Recorded Investment	59,733			57,857
Impaired Financing Receivable, Unpaid Principal Balance	79,773			74,122
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment			2,690
Impaired Financing Receivable, Average Recorded Investment		56,604	51,963
Impaired Financing Receivable, Interest Income, Accrual Method		235	217
Financing Receivable, Individually Evaluated for Impairment	59,733		58,532
Real Estate Construction [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Related Allowance				69
Impaired Financing Receivable, Recorded Investment	8,639			10,555
Impaired Financing Receivable, Unpaid Principal Balance	8,750			14,465
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	55		251
Impaired Financing Receivable, Average Recorded Investment		8,639	6,270
Impaired Financing Receivable, Interest Income, Accrual Method		280	29
Financing Receivable, Individually Evaluated for Impairment	8,639		12,926
Commercial Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Related Allowance				9,975
Impaired Financing Receivable, Recorded Investment	103,208			46,709
Impaired Financing Receivable, Unpaid Principal Balance	117,533			58,123
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	10,493		5,337
Impaired Financing Receivable, Average Recorded Investment		44,119	14,269
Impaired Financing Receivable, Interest Income, Accrual Method		138	30
Financing Receivable, Individually Evaluated for Impairment	$ 103,208		$ 17,792

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Fair Value Measurements Fair Value Measurements (Details 5) (Fair Value, Measurements, Nonrecurring [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	60,025	$ 67,274
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	57,064	46,508
Non Purchased Credit Impaired Loans and Leases [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	59,243	42,693
Non Purchased Credit Impaired Loans and Leases [Member] | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	57,064	40,327
Other real estate and foreclosed assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	782	24,015
Other real estate and foreclosed assets [Member] | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring		5,615
Cost-method Investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring		566
Cost-method Investments [Member] | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring		566
Discounted Cash Flow [Member] | Non Purchased Credit Impaired Loans and Leases [Member] | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	32,905
Third party appraisals [Domain] | Non Purchased Credit Impaired Loans and Leases [Member] | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	24,159
Third party appraisals [Domain] | Other real estate and foreclosed assets [Member] | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	0
Minimum [Member] | Discounted Cash Flow [Member] | Non Purchased Credit Impaired Loans and Leases [Member] | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Inputs, Discount Rate	0.00%
Minimum [Member] | Market Approach Valuation Technique [Member] | Other real estate and foreclosed assets [Member] | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Inputs, Discount Rate	0.00%
Minimum [Member] | Market Approach Valuation Technique [Member] | Cost-method Investments [Member] | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Inputs, Illiquidity Discount	0.00%
Maximum [Member] | Discounted Cash Flow [Member] | Non Purchased Credit Impaired Loans and Leases [Member] | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Inputs, Discount Rate	10.46%
Maximum [Member] | Market Approach Valuation Technique [Member] | Other real estate and foreclosed assets [Member] | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Inputs, Discount Rate	0.00%
Maximum [Member] | Market Approach Valuation Technique [Member] | Cost-method Investments [Member] | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Inputs, Illiquidity Discount	0.00%
Weighted Average [Member] | Discounted Cash Flow [Member] | Non Purchased Credit Impaired Loans and Leases [Member] | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Inputs, Discount Rate	6.29%
Weighted Average [Member] | Market Approach Valuation Technique [Member] | Other real estate and foreclosed assets [Member] | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Inputs, Discount Rate	0.00%
Weighted Average [Member] | Market Approach Valuation Technique [Member] | Cost-method Investments [Member] | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Inputs, Illiquidity Discount	0.00%

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Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015		Dec. 31, 2014
Assets [Abstract]
Cash and due from banks	$ 140,873		$ 164,757
Interest-earning deposits in financial institutions	250,981		148,469
Total cash and cash equivalents	391,854		313,226
Securities available-for-sale, at fair value	1,595,409		1,567,177
Federal Home Loan Bank stock, at cost	28,905		40,609
Total investment securities	1,624,314		1,607,786
Gross loans and leases	12,302,292		11,904,684
Deferred fees and costs	(30,126)		(22,252)
Allowance for loan and lease losses	(92,378)		(84,455)
Total loans and leases, net	12,179,788		11,797,977
Equipment leased to others under operating leases	119,959		122,506
Premises and equipment, net	36,022		36,551
Foreclosed assets, net	35,940		43,721
Goodwill	1,728,380	[1]	1,720,479
Core deposit and customer relationship intangibles, net	15,703		17,204
Deferred tax asset, net	236,065		284,411
Other assets	275,915		290,744
Total assets	16,643,940		16,234,605
Liabilities and Equity [Abstract]
Noninterest-bearing deposits	3,029,463		2,931,352
Interest-bearing deposits	8,904,712		8,823,776
Total deposits	11,934,175		11,755,128
Borrowings	618,156		383,402
Subordinated debentures	431,448		433,583
Accrued interest payable and other liabilities	126,800		156,262
Total liabilities	13,110,579		12,728,375
Commitments and Contingencies	0		0
Preferred stock ($0.01 par value; 5,000,000 shares authorized; none issued and outstanding)	0		0
Common stock ($0.01 par value, 200,000,000 shares authorized at March 31, 2015 and December 31, 2014; 104,241,437 and 104,219,197 shares issued, respectively, including 1,129,445 and 1,108,505 shares of unvested restricted stock, respectively)	1,042		1,042
Additional paid-in capital	3,758,855		3,807,167
Accumulated deficit	(212,633)		(285,712)
Treasury stock, at cost (1,197,180 shares at March 31, 2015 and December 31, 2014)	(42,647)		(42,647)
Accumulated other comprehensive income, net	28,744		26,380
Total stockholders' equity	3,533,361		3,506,230
Total liabilities and stockholders' equity	16,643,940		16,234,605
Purchased Credit Impaired Loans and Leases [Member]
Assets [Abstract]
Deferred fees and costs	$ (61)		$ (61)

[1] The increase in goodwill for the Community Banking segment and National Lending segment compared to March 31, 2014, was due primarily to $1.5 billion from the CapitalSource Inc. merger.

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Investments Investments (Details 4) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014
Net Investment Income [Line Items]
Interest Income, Securities, Operating, Taxable	$ 7,473	$ 7,697	$ 6,920
Interest Income, Securities, Operating, Tax Exempt	3,894	3,593	3,328
Investment Income, Dividend	828	915	575
Investment Income, Interest and Dividend	$ 12,195	$ 12,205	$ 10,823

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Consolidated Statement of Shareholders' Equity (USD $) In Thousands, except Share data, unless otherwise specified	Total	Common Stock [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]
Stockholders' Equity Attributable to Parent at Dec. 31, 2014	$ 3,506,230	$ 1,042	$ (42,647)	$ 26,380	$ 3,807,167	$ (285,712)
Common Shares [Abstract]
Shares, Outstanding		103,044,257
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures		20,940
Stock Issued During Period, Shares, Dividend Reinvestment Plan		1,300
Net earnings	73,079					73,079
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax	2,364	0	0	2,364	0	0
Stock Granted, Value, Share-based Compensation, Net of Forfeitures	3,112	0	0	0	3,112	0
Stock Issued During Period, Value, Dividend Reinvestment Plan	58	0	0	0	58	0
Dividends, Common Stock, Cash	51,482	0	0	0	51,482	0
Stockholders' Equity Attributable to Parent at Mar. 31, 2015	$ 3,533,361	$ 1,042	$ (42,647)	$ 28,744	$ 3,758,855	$ (212,633)

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Foreclosed Assets Foreclosed Assets (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015		Dec. 31, 2014
Other Real Estate Owned Net Covered and Noncovered including Foreclosed Assets	$ 35,940		$ 43,721
Other Real Estate Owned Net	28,195		35,423
Other Foreclosed Assets NonCovered	7,745		8,298
Other Real Estate Owned Net Noncovered including Foreclosed Assets	35,940	[1]	43,721	[1]
NonCovered [Member] | Commercial Real Estate [Member]
Other Real Estate Owned Net	1,036		2,449
NonCovered [Member] | Construction and Land Development [Member]
Other Real Estate Owned Net	18,942		24,759
NonCovered [Member] | Multi Family [Member]
Other Real Estate Owned Net	4,964		4,823
NonCovered [Member] | Residential Mortgage [Member]
Other Real Estate Owned Net	3,253		3,392
Covered [Member]
Other Real Estate Owned Net Covered and Noncovered including Foreclosed Assets	$ 8,100		$ 9,300

[1] (1)As of March 31, 2015 and December 31, 2014 , the amounts of covered foreclosed assets were $8.1 million and $9.3 million.

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Organization (Details) (USD $)	3 Months Ended
	Mar. 31, 2015 bank_branch	Dec. 31, 2014	Mar. 31, 2014
General Introduction [Abstract]
Total assets	$ 16,643,940,000	$ 16,234,605,000	$ 6,517,853,000
Loans and Leases Receivable Gross Carrying Amount Covered And Noncovered	12,302,292,000	11,904,684,000
Total deposits	11,934,175,000	11,755,128,000	5,369,408,000
Total stockholders' equity	3,533,361,000	3,506,230,000
Number Of Branches	80
Number of Businesses Acquired	27
Start of Acquisition Activities	May 01, 2000
Square 1 Financial, Inc. Acquisition Plan [Abstract]
Common Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Square 1 Financial, Inc. [Member]
Square 1 Financial, Inc. Acquisition Plan [Abstract]
Business Acquisition, Date of Acquisition Agreement	Mar. 02, 2015
Business Combination, Contingent Consideration, Liability	849,000,000
Business Acquisition Shares Receivable By Stockholders Of Acquiree Ratio	0.5997
Business Acquisition, Share Price	$ 27.49
Common Stock, Par or Stated Value Per Share	$ 45.84
Consideration valuation date	February 27, 2015
Consolidated Total Assets Proforma Upon Acquisition	19,800,000,000
Number of Branches Upon Acquisition	80
Retained Earnings [Member]
General Introduction [Abstract]
Total stockholders' equity	(212,633,000)	(285,712,000)
Other Organization Information [Abstract]
Cumulative Effect of Prospective Application of New Accounting Principle	$ (195,000)

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Borrowings (Details Textual) (USD $)	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Interest-bearing Domestic Deposit, Brokered	$ 814,900,000	$ 636,700,000
Brokered Deposits For The Quarter	178,200,000
Notes Payable, Other Payables [Member]
Debt Instrument [Line Items]
Debt Instruments Weighted Average Remaining Maturity Period	2 years 5 months 20 days
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Borrowing Capacity, Description	75,000,000
Line of Credit Facility, Amount Outstanding	0	0
Federal Reserve Bank Advances [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Amount Outstanding		0
Federal Home Loan Bank Advances [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Amount Outstanding	615,000,000	380,000,000
Line of Credit Facility, Current Borrowing Capacity	2,400,000,000
Unsecured Debt [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Current Borrowing Capacity	80,000,000
Unused lines of Credit [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Amount Outstanding	0	0
Certificate of Deposit Account Registry Service Program [Member]
Debt Instrument [Line Items]
Interest-bearing Domestic Deposit, Brokered	46,500,000	44,000,000
Federal Home Loan Bank of San Francisco [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Borrowing Capacity, Description	1,500,000,000
Line of Credit Facility, Amount Outstanding	0
Loans Pledged as Collateral	$ 2,100,000,000

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Recently Issued Accounting Standards (Notes)

3 Months Ended

Mar. 31, 2015

Recently Issued Accounting Standards [Abstract]

New Accounting Pronouncements and Changes in Accounting Principles

Note 15.  Recently Issued Accounting Standards

In May 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2014-09, "Revenue Recognition (Topic 606): Revenue from Contracts with Customers." ASU 2014-09 will be effective for annual and interim periods beginning after December 15, 2016. Early application is not permitted. ASU 2014-09 requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. ASU 2014-09 will replace most existing revenue recognition guidance in GAAP when it becomes effective. The standard permits the use of either the retrospective or cumulative effect transition method. The Company is evaluating the effect that ASU 2014-09 will have on its financial statements and related disclosures. The Company has not yet selected a transition method nor has it determined the effect of the standard on its ongoing financial reporting.

In June 2014, the FASB issued ASU 2014-12, "Compensation-Stock Compensation (Topic 718): Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could Be Achieved after the Requisite Service Period." ASU 2014-12 will be effective for annual and interim periods beginning after December 15, 2015. ASU 2014-12 applies to all reporting entities that grant their employees share-based payments in which the terms of the award provide for a performance target that affects vesting could be achieved after the requisite service period. That is the case when an employee is eligible to retire or otherwise terminate employment before the end of the period in which a performance target (for example, an initial public offering or a profitability target) could be achieved and still be eligible to vest in the award if and when the performance target is achieved. We do not currently have outstanding performance-based awards and, as a result, ASU 2014-12 would not impact our financial statements and its related disclosures.

In August 2014, the FASB issued ASU 2014-14, "Receivables - Troubled Debt Restructuring by Creditors (Subtopic 310-40): Classification of Certain Government-Guaranteed Mortgage Loans Upon Foreclosure." ASU 2014-14 requires that a mortgage loan be derecognized and that a separate other receivable be recognized upon foreclosure if the following conditions are met: (1) the loan has a government guarantee that is not separable from the loan before foreclosure; (2) at the time of foreclosure, the creditor has the intent to convey the real estate property to the guarantor and make a claim on the guarantee, and the creditor has the ability to recover under that claim; and (3) at the time of foreclosure, any amount of the claim that is determined on the basis of the fair value of the real estate is fixed. Upon foreclosure, the separate other receivable should be measured based on the amount of the loan balance (principal and interest) expected to be recovered from the guarantor. ASU 2014-14 is effective for public business entities for reporting periods, including interim periods, beginning after December 15, 2014. ASU 2014-14 did not impact the Company's financial statements and related disclosures.

In January 2015, the FASB issued ASU 2015-01, "Income Statement - Extraordinary and Unusual Items (Subtopic 225-20): Simplifying Income Statement Presentation by Eliminating the Concept of Extraordinary Items," which eliminates the concept of extraordinary items from U.S. GAAP as part of its simplification initiative. Under ASU 2015-01, an entity will no longer separate out an extraordinary item from the results of ordinary operations and separately present this extraordinary item on its income statement, nor will related income tax and earnings-per-share data applicable to an extraordinary item need to be disclosed. Despite these simplifications, ASU 2015-01 does not affect disclosure guidance for events or transactions that are unusual in nature or infrequent in their occurrence. ASU 2015-01 is effective for annual periods beginning after December 15, 2015, and interim periods within those annual periods. The Company does not expect the effect of ASU 2015-01 to have a material impact on its financial statements and related disclosures.

In February 2015, the FASB issued ASU 2015-02, "Consolidation (Topic 810) - Amendments to the Consolidation Analysis," which changes the way reporting enterprises evaluate whether (a) they should consolidate limited partnerships and similar entities, (b) fees paid to a decision maker or service provider are variable interests in a variable interest entity (VIE), and (c) variable interests in a VIE held by related parties of the reporting enterprise require the reporting enterprise to consolidate the VIE. It also eliminates the VIE consolidation model based on majority exposure to variability that applied to certain investment companies and similar entities. ASU 2015-2 is effective for public business entities for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2015. Early adoption is permitted, including adoption in an interim period. The Company does not expect the effect of ASU 2015-02 to have a material impact on its financial statements and related disclosures.

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Discontinued Operations Discontinued Operations (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Liabilities	$ 13,110,579	$ 12,728,375
Electronic Payment Systems [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Liabilities	$ 20,400	$ 21,300

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Acquisitions Acquisitions Tables

3 Months Ended

Mar. 31, 2015

Business Combinations [Abstract]

Schedule of Business Acquisitions, by Acquisition

The following assets acquired and liabilities assumed of CapitalSource Inc. are presented at estimated fair value as of its acquisition date:

	Acquisition and Date Acquired
	CapitalSource Inc.
	April 7, 2014
	(In thousands)
Assets Acquired:
Cash and due from banks	$	768,553
Interest‑earning deposits in financial institutions	60,612
Investment securities available‑for‑sale	382,797
FHLB stock	46,060
Loans and leases	6,877,427
Equipment leased to others under operating leases	160,015
Premises and equipment	12,663
Foreclosed assets	6,382
Income tax assets	304,856
Goodwill	1,526,282
Core deposit and customer relationship intangibles	6,720
Other assets(1)	582,985
Total assets acquired	$	10,735,352
Liabilities Assumed:
Noninterest‑bearing deposits	$	4,631
Interest‑bearing deposits	6,236,419
Other borrowings	992,109
Subordinated debentures	300,918
Accrued interest payable and other liabilities	124,087
Total liabilities assumed	$	7,658,164
Total consideration paid	$	3,077,188
Summary of consideration:
Cash paid	$	483,118
PacWest common stock issued	2,594,070
Total	$	3,077,188

___________________

(1) Includes a $484 million receivable for securities sales proceeds.

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Fair Value Measurements (Details 1) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Securities available‑for‑sale	$ 1,595,409	$ 1,567,177
Derivative Asset, Fair Value of Collateral	9,749	5,234
Derivative Liability, Fair Value of Collateral		118
Level 1
Securities available‑for‑sale	524	519
Derivative Asset, Fair Value of Collateral	0	0
Derivative Liability, Fair Value of Collateral		0
Level 2
Securities available‑for‑sale	1,561,441	1,532,711
Derivative Asset, Fair Value of Collateral	9,749	5,234
Derivative Liability, Fair Value of Collateral		118
Level 3
Securities available‑for‑sale	33,444	33,947
Derivative Asset, Fair Value of Collateral	0	0
Derivative Liability, Fair Value of Collateral		0
Collateralized Loan Obligations [Member]
Securities available‑for‑sale		0
Fair Value, Measurements, Recurring [Member]
Securities available‑for‑sale	1,595,409	1,567,177
Derivative Asset, Fair Value of Collateral	9,749	5,234
Assets, Fair Value Disclosure, Recurring	1,605,158	1,572,411
Derivative Liability, Fair Value of Collateral		118
Fair Value, Measurements, Recurring [Member] | Level 1
Securities available‑for‑sale		519
Derivative Asset, Fair Value of Collateral	0	0
Assets, Fair Value Disclosure, Recurring	524	519
Derivative Liability, Fair Value of Collateral		0
Fair Value, Measurements, Recurring [Member] | Level 2
Securities available‑for‑sale		1,532,711
Derivative Asset, Fair Value of Collateral	9,749	5,234
Assets, Fair Value Disclosure, Recurring	1,571,190	1,537,945
Derivative Liability, Fair Value of Collateral		118
Fair Value, Measurements, Recurring [Member] | Level 3
Securities available‑for‑sale		33,947
Derivative Asset, Fair Value of Collateral	0	0
Assets, Fair Value Disclosure, Recurring	33,444	33,947
Derivative Liability, Fair Value of Collateral		0
Fair Value, Measurements, Recurring [Member] | Government agency and government-sponsored enterprise pass through securities
Securities available‑for‑sale	458,892	535,672
Fair Value, Measurements, Recurring [Member] | Government agency and government-sponsored enterprise pass through securities | Level 1
Securities available‑for‑sale	0	0
Fair Value, Measurements, Recurring [Member] | Government agency and government-sponsored enterprise pass through securities | Level 2
Securities available‑for‑sale	458,892	535,672
Fair Value, Measurements, Recurring [Member] | Government agency and government-sponsored enterprise pass through securities | Level 3
Securities available‑for‑sale	0	0
Fair Value, Measurements, Recurring [Member] | Government agency and government-sponsored enterprise collateralized mortgage obligations [Member]
Securities available‑for‑sale	276,224	277,946
Fair Value, Measurements, Recurring [Member] | Government agency and government-sponsored enterprise collateralized mortgage obligations [Member] | Level 1
Securities available‑for‑sale	0	0
Fair Value, Measurements, Recurring [Member] | Government agency and government-sponsored enterprise collateralized mortgage obligations [Member] | Level 2
Securities available‑for‑sale	276,224	277,946
Fair Value, Measurements, Recurring [Member] | Government agency and government-sponsored enterprise collateralized mortgage obligations [Member] | Level 3
Securities available‑for‑sale	0	0
Fair Value, Measurements, Recurring [Member] | Covered private label collateralized mortgage obligation [Member]
Securities available‑for‑sale	33,444	33,947
Fair Value, Measurements, Recurring [Member] | Covered private label collateralized mortgage obligation [Member] | Level 1
Securities available‑for‑sale	0	0
Fair Value, Measurements, Recurring [Member] | Covered private label collateralized mortgage obligation [Member] | Level 2
Securities available‑for‑sale	0	0
Fair Value, Measurements, Recurring [Member] | Covered private label collateralized mortgage obligation [Member] | Level 3
Securities available‑for‑sale	33,444	33,947
Fair Value, Measurements, Recurring [Member] | Other Private Label Collateralized Mortgage Obligations [Member]
Securities available‑for‑sale	9,650	10,914
Fair Value, Measurements, Recurring [Member] | Other Private Label Collateralized Mortgage Obligations [Member] | Level 1
Securities available‑for‑sale	0	0
Fair Value, Measurements, Recurring [Member] | Other Private Label Collateralized Mortgage Obligations [Member] | Level 2
Securities available‑for‑sale	9,650	10,914
Fair Value, Measurements, Recurring [Member] | Other Private Label Collateralized Mortgage Obligations [Member] | Level 3
Securities available‑for‑sale	0	0
Fair Value, Measurements, Recurring [Member] | Municipal securities
Securities available‑for‑sale	592,853	536,116
Fair Value, Measurements, Recurring [Member] | Municipal securities | Level 1
Securities available‑for‑sale	0	0
Fair Value, Measurements, Recurring [Member] | Municipal securities | Level 2
Securities available‑for‑sale	592,853	536,116
Fair Value, Measurements, Recurring [Member] | Municipal securities | Level 3
Securities available‑for‑sale	0	0
Fair Value, Measurements, Recurring [Member] | Corporate Debt Securities [Member]
Securities available‑for‑sale	47,745	110,109
Fair Value, Measurements, Recurring [Member] | Corporate Debt Securities [Member] | Level 1
Securities available‑for‑sale	0	0
Fair Value, Measurements, Recurring [Member] | Corporate Debt Securities [Member] | Level 2
Securities available‑for‑sale	47,745	110,109
Fair Value, Measurements, Recurring [Member] | Corporate Debt Securities [Member] | Level 3
Securities available‑for‑sale	0	0
Fair Value, Measurements, Recurring [Member] | Collateralized Loan Obligations [Member]
Securities available‑for‑sale	113,805
Fair Value, Measurements, Recurring [Member] | Collateralized Loan Obligations [Member] | Level 2
Securities available‑for‑sale	113,805
Fair Value, Measurements, Recurring [Member] | US Government-sponsored Enterprises Debt Securities [Member]
Securities available‑for‑sale	37,405	36,757
Fair Value, Measurements, Recurring [Member] | US Government-sponsored Enterprises Debt Securities [Member] | Level 1
Securities available‑for‑sale	0	0
Fair Value, Measurements, Recurring [Member] | US Government-sponsored Enterprises Debt Securities [Member] | Level 2
Securities available‑for‑sale	37,405	36,757
Fair Value, Measurements, Recurring [Member] | US Government-sponsored Enterprises Debt Securities [Member] | Level 3
Securities available‑for‑sale	0	0
Fair Value, Measurements, Recurring [Member] | Other securities [Member]
Securities available‑for‑sale	25,391	25,716
Fair Value, Measurements, Recurring [Member] | Other securities [Member] | Level 1
Securities available‑for‑sale	524	519
Fair Value, Measurements, Recurring [Member] | Other securities [Member] | Level 2
Securities available‑for‑sale	24,867	25,197
Fair Value, Measurements, Recurring [Member] | Other securities [Member] | Level 3
Securities available‑for‑sale	$ 0	$ 0

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Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Net Cash Provided by (Used in) Operating Activities [Abstract]
Net earnings	$ 73,079	$ 25,080
Depreciation and amortization	10,648	6,653
Provision (negative provision) for credit losses	16,434	(644)
Loss (gain) on sale of foreclosed assets	106	(2,323)
Provision for losses on foreclosed assets	124	94
Gain on sale of loans and leases	0	(106)
Gain on sale of premises and equipment	(3)	(1,571)
Gain on sale of securities	(3,275)	(4,752)
Unrealized gain on derivatives and foreign currencies, net	(2,715)	0
Earned stock compensation	3,112	1,611
Tax effect included in stockholders' equity of restricted stock vesting	0	(1,110)
Increase in accrued and deferred income taxes, net	38,722	19,679
Decrease in other assets	19,356	4,740
Decrease in accrued interest payable and other liabilities	(29,102)	(20,107)
Net cash provided by operating activities	126,486	27,244
Net Cash Provided by (Used in) Investing Activities [Abstract]
Net (increase) decrease in loan and leases	(403,438)	149,440
Proceeds from sale of loans and leases	0	1,128
Proceeds from maturities and paydowns	27,547	33,860
Proceeds from sales	144,945	142,041
Purchases	(196,568)	(140,048)
Net redemptions of Federal Home Loan Bank stock	11,704	2,939
Proceeds from sales of foreclosed assets	7,945	7,209
Purchases of premises and equipment, net	(1,490)	(1,115)
Proceeds from sales of premises and equipment	29	3,753
Net cash (used in) provided by investing activities	(409,326)	199,207
Net Cash Provided by (Used in) Financing Activities [Abstract]
Noninterest-bearing	97,224	73,163
Interest-bearing	80,914	15,258
Net increase (decrease) in borrowings	234,754	(107,953)
Restricted stock surrendered	0	(2,058)
Tax effect included in stockholders' equity of restricted vesting stock	0	1,110
Cash dividends paid	(51,424)	(11,306)
Net cash provided by (used in) financing activities	361,468	(31,786)
Net increase in cash and cash equivalents	78,628	194,665
Cash and Cash Equivalents, Beginning Balance	313,226	147,422
Cash and Cash Equivalents, Ending Balance	391,854	342,087
Noncash transactions from investing activities:
Cash paid for interest	12,334	2,483
Cash received for income taxes	(7,695)	(5,693)
Loans transferred to foreclosed assets	$ 394	$ 13

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Consolidated Balance Sheets (Parenthetical) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Preferred Stock, Shares Authorized	$ 0	$ 0.01
Preferred Stock, Value, Outstanding	0	5,000,000
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	200,000,000	200,000,000
Common Stock, Shares, Issued	104,241,437	104,219,197
Unvested restricted shares	1,129,445	1,108,505
Treasury Stock, Shares	1,197,180	1,197,180

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Commitments and Contingencies

3 Months Ended

Mar. 31, 2015

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Note 10. Commitments and Contingencies

Lending Commitments

The Bank is a party to financial instruments with off‑balance sheet risk in the normal course of business to meet the financing needs of its customers. These financial instruments include commitments to extend credit, standby letters of credit, and commitments to purchase equipment being acquired for lease to others. Those instruments involve, to varying degrees, elements of credit risk in excess of the amount recognized in the condensed consolidated balance sheets. The contract or notional amounts of those instruments reflect the extent of involvement the Company has in particular classes of financial instruments.

The following table presents a summary of the financial instruments described above as of the dates indicated:

	March 31, 2015		December 31, 2014
	(In thousands)
Loan commitments to extend credit	$	2,122,749	$	1,921,067
Standby letters of credit	97,540		88,495
Commitments to purchase equipment being acquired for lease to others	23,535		12,839
	$	2,243,824	$	2,022,401

Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the contract. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. Since many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements.

Standby letters of credit are conditional commitments issued by the Company to guarantee the performance of a customer to a third party. We provide standby letters of credit in conjunction with several of our lending arrangements and property lease obligations. Most guarantees expire within one year from the date of issuance. If a borrower defaults on its commitments subject to any letter of credit issued under these arrangements, we would be required to meet the borrower's financial obligation but would seek repayment of that financial obligation from the borrower. In some cases, borrowers have pledged cash and investment securities as collateral with us under these arrangements.

In addition, the Company has investments in low income housing project partnerships, which provide the Company income tax credits, and in a few small business investment companies. The investments call for capital contributions up to an amount specified in the partnership agreements. As of March 31, 2015 and December 31, 2014, the Company had commitments to contribute capital to these entities totaling $13.4 million and $11.0 million. In connection with equity investments added from the CapitalSource Inc. merger, we had commitments to contribute up to an additional $2.8 million and $2.9 million to 11 private equity funds at March 31, 2015 and December 31, 2014.

Legal Matters

In the ordinary course of our business, we are party to various legal actions, which we believe are incidental to the operation of our business. The outcome of such legal actions and the timing of ultimate resolution are inherently difficult to predict. In the opinion of management, based upon information currently available to us, any resulting liability, in addition to amounts already accrued, would not have a material adverse effect on the Company’s financial statements or operations.

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Document and Entity Information	3 Months Ended
	Mar. 31, 2015	Apr. 29, 2015
Document and Entity Information [Abstract]
Entity Registrant Name	PACWEST BANCORP
Entity Central Index Key	0001102112
Document Period End Date	Mar. 31, 2015
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q1
Amendment Flag	false
Entity Common Stock, Shares Outstanding		101,855,519
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes

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Fair Value Measurements

3 Months Ended

Mar. 31, 2015

Fair Value Disclosures [Abstract]

Fair Value Measurements

Note 11.  Fair Value Measurements

ASC Topic 820, “Fair Value Measurement,” defines fair value, establishes a framework for measuring fair value including a three‑level valuation hierarchy, and expands disclosures about fair value measurements. Fair value is defined as the exchange price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date reflecting assumptions that a market participant would use when pricing an asset or liability. The hierarchy uses three levels of inputs to measure the fair value of assets and liabilities as follows:

• Level 1: Quoted prices (unadjusted) for identical assets or liabilities in active markets.

• Level 2: Observable inputs other than Level 1, including quoted prices for similar assets and liabilities in active markets, quoted prices in less active markets, or other observable inputs that can be corroborated by observable market data, either directly or indirectly, for substantially the full term of the financial instrument. This category generally includes government agency and government‑sponsored enterprise securities.

• Level 3: Inputs to a valuation methodology that are unobservable, supported by little or no market activity, and significant to the fair value measurement. These valuation methodologies generally include pricing models, discounted cash flow models, or a determination of fair value that requires significant management judgment or estimation. This category also includes observable inputs from a pricing service not corroborated by observable market data, and includes our covered private label CMOs.

We use fair value to measure certain assets and liabilities on a recurring basis, primarily securities available‑for‑sale and derivatives. For assets measured at the lower of cost or fair value, the fair value measurement criteria may or may not be met during a reporting period and such measurements are therefore considered “nonrecurring” for purposes of disclosing our fair value measurements. Fair value is used on a nonrecurring basis to adjust carrying values for impaired loans and other real estate owned and also to record impairment on certain assets, such as goodwill, core deposit intangibles, and other long‑lived assets.

The following tables present information on the assets measured and recorded at fair value on a recurring basis as of the dates indicated:

	Fair Value Measurements as of
	March 31, 2015
Measured on a Recurring Basis:	Total		Level 1		Level 2		Level 3
	(In thousands)
Securities available‑for‑sale:
Government agency and government‑sponsored enterprise
pass-through securities	$	458,892	$	—	$	458,892	$	—
Government agency and government‑sponsored enterprise
collateralized mortgage obligations	276,224		—		276,224		—
Covered private label CMOs	33,444		—		—		33,444
Other private label CMOs	9,650		—		9,650		—
Municipal securities	592,853		—		592,853		—
Corporate debt securities	47,745		—		47,745		—
Collateralized loan obligations	113,805		—		113,805		—
Government‑sponsored enterprise debt securities	37,405		—		37,405		—
Other securities	25,391		524		24,867		—
Total securities available-for-sale	1,595,409		524		1,561,441		33,444
Derivative assets	9,749		—		9,749		—
Total recurring assets	$	1,605,158	$	524	$	1,571,190	$	33,444

	Fair Value Measurements as of
	December 31, 2014
Measured on a Recurring Basis:	Total		Level 1		Level 2		Level 3
	(In thousands)
Securities available‑for‑sale:
Government agency and government‑sponsored enterprise
pass-through securities	$	535,672	$	—	$	535,672	$	—
Government agency and government‑sponsored enterprise
collateralized mortgage obligations	277,946		—		277,946		—
Covered private label CMOs	33,947		—		—		33,947
Other private label CMOs	10,914		—		10,914		—
Municipal securities	536,116		—		536,116		—
Corporate debt securities	110,109		—		110,109		—
Government‑sponsored enterprise debt securities	36,757		—		36,757		—
Other securities	25,716		519		25,197		—
Total securities available-for-sale	1,567,177		519		1,532,711		33,947
Derivative assets	5,234		—		5,234		—
Total recurring assets	$	1,572,411	$	519	$	1,537,945	$	33,947
Derivative liabilities	$	118	$	—	$	118	$	—

There were no transfers of assets either between Level 1 and Level 2 nor in or out of Level 3 of the fair value hierarchy for assets measured on a recurring basis during the three months endedMarch 31, 2015.

The following table presents information about quantitative inputs and assumptions used to determine the fair values provided by our third party pricing service for our Level 3 covered private label CMOs measured at fair value on a recurring basis as of March 31, 2015:

	Covered Private Label CMOs
Unobservable Inputs:	Range of Inputs	Weighted Average Input
Voluntary annual prepayment speeds	0% - 34.4%	5.7%
Annual default rates	0% - 42.7%	2.9%
Loss severity rates	0% - 71.2%	30.2%
Discount rates	0% - 22.6%	5.6%

The following table summarizes activity for assets measured at fair value on a recurring basis that are categorized as Level 3 for the period indicated:

	Covered Private Label CMOs
	(In thousands)
Balance, December 31, 2014	$	33,947
Total realized in earnings	154
Total unrealized loss in comprehensive income	(109		)
Net settlements	(548		)
Balance, March 31, 2015	$	33,444

The following tables present assets measured at fair value on a non‑recurring basis as of the dates indicated:

	Fair Value Measurement as of
	March 31, 2015
	Total		Level 1		Level 2		Level 3
Measured on a Non‑Recurring Basis:	(In thousands)
Impaired Non‑PCI loans	$	59,243	$	—	$	2,179	$	57,064
Other real estate owned	782		—		782		—
Total non-recurring	$	60,025	$	—	$	2,961	$	57,064

	Fair Value Measurement as of
	December 31, 2014
	Total		Level 1		Level 2		Level 3
Measured on a Non‑Recurring Basis:	(In thousands)
Impaired Non‑PCI loans	$	42,693	$	—	$	2,366	$	40,327
Other real estate owned	24,015		—		18,400		5,615
Investments carried at cost	566		—		—		566
Total non-recurring	$	67,274	$	—	$	20,766	$	46,508

The following table presents losses recognized on assets measured on a nonrecurring basis for the period indicated:

	Three Months Ended
	March 31, 2015
Loss on Assets Measured on a Non‑Recurring Basis:	(In thousands)
Impaired Non‑PCI loans	$	(9,192	)
Other real estate owned	(124		)
Total net loss	$	(9,316	)

The following table presents the valuation methodology and unobservable inputs for Level 3 assets measured at fair value on a nonrecurring basis as of March 31, 2015:

Asset	Fair Value (In thousands)		Valuation Technique	Unobservable Inputs	Range	Weighted Average
Impaired Non-PCI loans	$	32,905	Discounted cash flows	Discount rates	2.75% - 10.46%	6.73%
	24,159		Appraisals	No discounts
Total non-recurring Level 3	$	57,064

ASC Topic 825, “Financial Instruments,” requires disclosure of the estimated fair value of certain financial instruments and the methods and significant assumptions used to estimate such fair values. Additionally, certain financial instruments and all nonfinancial instruments are excluded from the applicable disclosure requirements.

The following tables present a summary of the carrying values and estimated fair values of certain financial instruments as of the dates indicated:

	March 31, 2015
	Carrying or Contract		Estimated Fair Value
	Amount		Total		Level 1		Level 2		Level 3
	(In thousands)
Financial Assets:
Cash and due from banks	$	140,873	$	140,873	$	140,873	$	—	$	—
Interest‑earning deposits in financial institutions	250,981		250,981		250,981		—		—
Securities available‑for‑sale	1,595,409		1,595,409		524		1,561,441		33,444
Investment in FHLB stock	28,905		28,905		—		28,905		—
Investments carried at cost	3,100		3,534		—		—		3,534
Investments accounted for under the equity method	21,226		21,475		—		—		21,475
Loans and leases, net	12,179,788		12,280,982		—		2,179		12,278,803
Derivative assets	9,749		9,749		—		9,749		—
Financial Liabilities:
Deposits:
Demand, money market, interest checking, and savings deposits	6,353,376		6,353,376		—		6,353,376		—
Time deposits	5,580,799		5,584,088		—		5,584,088		—
Borrowings	618,156		618,351		615,000		3,351		—
Subordinated debentures	431,448		415,210		—		415,210		—

	December 31, 2014
	Carrying or Contract		Estimated Fair Value
	Amount		Total		Level 1		Level 2		Level 3
	(In thousands)
Financial Assets:
Cash and due from banks	$	164,757	$	164,757	$	164,757	$	—	$	—
Interest‑earning deposits in financial institutions	148,469		148,469		148,469		—		—
Securities available‑for‑sale	1,567,177		1,567,177		519		1,532,711		33,947
Investment in FHLB stock	40,609		40,609		—		40,609		—
Investments carried at cost	3,691		3,691		—		—		3,691
Investments accounted for under the equity method	21,461		21,700		—		—		21,700
Loans and leases, net	11,797,977		11,757,951		—		2,366		11,755,585
Derivative assets	5,234		5,234		—		5,234		—
Financial Liabilities:
Deposits:
Demand, money market, interest checking, and savings deposits	6,256,190		6,256,190		—		6,256,190		—
Time deposits	5,498,938		5,502,479		—		5,502,479		—
Borrowings	383,402		383,539		380,000		3,539		—
Subordinated debentures	433,583		417,657		—		417,657		—
Derivative liabilities	118		118		—		118		—

The following is a description of the valuation methodologies used to measure our assets recorded at fair value (under ASC Topic 820, “Fair Value Measurement”) and for estimating fair value for financial instruments not recorded at fair value (under ASC Topic 825).

Cash and due from banks. The carrying amount is assumed to be the fair value because of the liquidity of these instruments.

Interest‑earning deposits in financial institutions. The carrying amount is assumed to be the fair value given the short‑term nature of these deposits.

Securities available‑for‑sale. Securities available‑for‑sale are measured and carried at fair value on a recurring basis. Unrealized gains and losses on available‑for‑sale securities are reported as a component of “Accumulated other comprehensive income” in the condensed consolidated balance sheets. See Note 5, Investment Securities, for further information on unrealized gains and losses on securities available‑for‑sale.

Fair value for securities categorized as Level 1, which are publicly traded securities, are based on readily available quoted prices. In determining the fair value of the securities categorized as Level 2, we obtain a report from a nationally recognized broker‑dealer detailing the fair value of each investment security we hold as of each reporting date. The broker‑dealer uses observable market information to value our securities, with the primary source being a nationally recognized pricing service. We review the market prices provided by the broker‑dealer for our securities for reasonableness based on our understanding of the marketplace and we consider any credit issues related to the securities. As we have not made any adjustments to the market quotes provided to us and they are based on observable market data, they have been categorized as Level 2 within the fair value hierarchy.

Our covered private label CMOs are categorized as Level 3 due in part to the inactive market for such securities. There is a wide range of prices quoted for private label CMOs among independent third party pricing services and this range reflects the significant judgment being exercised over the assumptions and variables that determine the pricing of such securities. We consider this subjectivity to be a significant unobservable input and have concluded that the covered private label CMOs should be categorized as a Level 3 measured asset. Our fair value estimate was based on prices provided to us by a nationally recognized pricing service which we also use to determine the fair value of the majority of our securities portfolio. We determined the reasonableness of the fair values by reviewing assumptions at the individual security level about prepayment, default expectations, estimated severity loss factors, and discount rates, all of which are not directly observable in the market. Significant changes in default expectations, severity loss factors, or discount rates, which occur in unison or in isolation, would result in different fair value measurements.

FHLB stock. Investments in FHLB stock are recorded at cost and measured for impairment quarterly. Ownership of FHLB stock is restricted to member banks and the securities do not have a readily determinable market value. Purchases and sales of these securities are at par value with the issuer. The fair value of investments in FHLB stock is equal to the carrying amount.

Non-PCI loans and leases. As Non-PCI loans and leases are not measured at fair value, the following discussion relates to estimating the fair value disclosures under ASC Topic 825. Fair values are estimated for portfolios of loans and leases with similar financial characteristics. Loans are segregated by type and further segmented into fixed and variable rate interest terms by credit risk categories. The fair value estimates do not take into consideration the value of the loan portfolio in the event the loans are sold outside the parameters of normal operating activities. The fair value of performing fixed-rate loans is estimating by discounting scheduled cash flows through the estimated maturity using estimated market prepayment speeds. The fair value of equipment leases is estimated by discounting scheduled lease and expected lease residual cash flows over their remaining term. The estimated market discount rates used for performing fixed-rate loans and equipment leases are current market rates for instruments with similar risk and similar terms. The fair value of performing variable-rate loans is estimated by discounting scheduled cash flows through the next repricing date. As these loans reprice frequently at market rates and the credit risk is not considered to be greater than normal, the market value is typically close to the carrying amount of these loans. These methods and assumptions are not based on the exit price concept of fair value.

Impaired Non‑PCI loans. Nonaccrual loans and performing restructured loans are considered impaired for reporting purposes and are measured and recorded at fair value on a non‑recurring basis. Nonaccrual Non‑PCI loans with an unpaid principal balance over $250,000 and all performing restructured loans are reviewed individually for the amount of impairment, if any. Nonaccrual Non‑PCI loans with a net book balance less than $250,000 may not be individually assessed for impairment but may instead be reserved for under the general reserve component of our allowance for credit losses.

To the extent a loan is collateral dependent, we measure such impaired loan based on the estimated fair value of the underlying collateral. The fair value of each loan’s collateral is generally based on estimated market prices from an independently prepared appraisal, which is then adjusted for the cost related to liquidating such collateral; such valuation inputs result in a nonrecurring fair value measurement that is categorized as a Level 2 measurement. The Level 2 measurement is based on appraisals obtained within the last 12 months and for which a charge‑off was recognized or a change in the specific valuation allowance was made during the three months endedMarch 31, 2015.

When adjustments are made to an appraised value to reflect various factors such as the age of the appraisal or known changes in the market or the collateral, such valuation inputs are considered unobservable and the fair value measurement is categorized as a Level 3 measurement. The impaired loans categorized as Level 3 also include unsecured loans and other secured loans whose fair values are based significantly on unobservable inputs such as the strength of a guarantor, including an SBA government guarantee, cash flows discounted at the effective loan rate, and management’s judgment.

The impaired Non‑PCI loan balances shown in the tables on page 33 as measured on a non-recurring basis represent those nonaccrual and restructured loans for which impairment was recognized during the three months endedMarch 31, 2015. The amounts shown as net losses include the impairment recognized during the three months endedMarch 31, 2015, for the loan balances shown. Of the $139.3 million of nonaccrual Non-PCI loans at March 31, 2015, $24.5 million were written down to their collateral fair values through charge‑offs during the three months endedMarch 31, 2015.

Investments that do not have readily determinable fair values. Other investments accounted for under the cost or equity methods of accounting are carried at fair value on a nonrecurring basis to the extent that they are determined to be other-than-temporarily impaired during the period. As there is rarely an observable price or market for such investments, we determine fair value using internally developed models. Our models utilize industry valuation benchmarks, such as multiples of net revenue or earnings before interest, taxes and amortization ("EBITA"), to determine a value for the underlying enterprise. We may also reduce the value determined by the model due to illiquidity or other investee-specific characteristics which may affect the fair value. Significant decreases to these valuation benchmarks would result in significant decreases in the estimated fair values. We reduce this value by the value of debt outstanding to arrive at an estimated equity value of the enterprise. When an external event such as a purchase transaction, public offering or subsequent equity sale occurs, the pricing indicated by the external event is used to corroborate our internal valuation. Fair value measurements related to these investments are typically classified within Level 3 of the fair value hierarchy.

Other real estate owned ("OREO"). The fair value of foreclosed real estate is generally based on the lower of estimated market prices from independently prepared current appraisals or executed sales contracts with buyers, less estimated costs to sell; such valuation inputs result in a fair value measurement that is categorized as a Level 2 measurement on a nonrecurring basis. As a matter of policy, appraisals are required annually and may be updated more frequently as circumstances require in the opinion of management. The Level 2 measurement for OREO is based on appraisals obtained within the last 12 months and for which a write‑down was recognized during the three months endedMarch 31, 2015.

When a current appraised value is not available or management determines the fair value of the collateral is determined to be less than the appraised value as a result of known changes in the market or the collateral and there is no observable market price, such valuation inputs result in a fair value measurement that is categorized as a Level 3 measurement. To the extent a purchase offer or reduced listing price represents a significant discount to an observable market price, such valuation input would result in a fair value measurement that is also considered a Level 3 measurement. The OREO losses disclosed are write‑downs based on either a recent appraisal obtained after foreclosure or an accepted purchase offer by an independent third party received after foreclosure.

Deposits. Deposits are carried at historical cost. The fair value of deposits with no stated maturity, such as noninterest‑bearing demand deposits, interest checking, money market, and savings accounts, is equal to the amount payable on demand as of the balance sheet date and considered Level 2. The fair value of time deposits is based on the discounted value of contractual cash flows and considered Level 2. The discount rate is estimated using the rates currently offered for deposits of similar remaining maturities. No value has been separately assigned to the Company’s long‑term relationships with its deposit customers, such as a core deposit intangible.

Borrowings. Borrowings include overnight FHLB advances and other fixed‑rate term borrowings. Borrowings are carried at amortized cost. The fair value of overnight FHLB advances is equal to the carrying value and considered Level 1. The fair value of fixed‑rate borrowings is calculated by discounting scheduled cash flows through the estimated maturity dates or call dates, if applicable, using estimated market discount rates that reflect current rates offered for borrowings with similar remaining maturities and characteristics and are considered Level 2.

Subordinated debentures. Subordinated debentures are carried at amortized cost. The fair value of subordinated debentures with variable rates is determined using a market discount rate on the expected cash flows.

Derivative assets and liabilities. Derivatives are carried at fair value on a recurring basis and primarily relate to forward exchange contracts which we enter into to manage foreign exchange risk. Our derivatives are principally traded in over-the-counter markets where quoted market prices are not readily available. Instead, the fair value of derivatives is estimated using market observable inputs such as foreign exchange forward rates, interest rate yield curves, volatilities and basis spreads. We also consider counterparty credit risk in valuing our derivatives. We typically classify our derivatives in Level 2.

Commitments to extend credit. The majority of our commitments to extend credit carry current market interest rates if converted to loans. Because these commitments are generally unassignable by either the borrower or us, they only have value to the borrower and us. The estimated fair value approximates the recorded deferred fee amounts and is excluded from the table above because it is not material.

Limitations

Fair value estimates are made at a specific point in time and are based on relevant market information and information about the financial instrument. These estimates do not reflect income taxes or any premium or discount that could result from offering for sale at one time the Company’s entire holdings of a particular financial instrument. Because no market exists for a portion of the Company’s financial instruments, fair value estimates are based on what management believes to be conservative judgments regarding expected future cash flows, current economic conditions, risk characteristics of various financial instruments, and other factors. These estimated fair values are subjective in nature and involve uncertainties and matters of significant judgment and therefore cannot be determined with precision. Changes in assumptions could significantly affect the estimates. Since the fair values have been estimated as of March 31, 2015, the amounts that will actually be realized or paid at settlement or maturity of the instruments could be significantly different.

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Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014
Interest income:
Loans and leases	$ 202,097	$ 197,472	$ 77,463
Investment securities	12,195	12,205	10,823
Deposits in financial institutions	22	19	74
Total interest income	214,314	209,696	88,360
Interest expense:
Deposits	10,479	9,972	1,225
Borrowings	235	144	79
Subordinated debentures	4,525	4,597	1,041
Total interest expense	15,239	14,713	2,345
Net interest income	199,075	194,983	86,015
Provision (negative provision) for credit losses	16,434	2,063	(644)
Net interest income after provision (negative provision) for credit losses	182,641	192,920	86,659
Non-interest income:
Service charges on deposit accounts	2,574	2,787	3,002
Other commissions and fees	5,396	4,556	1,932
Leased equipment income	5,382	5,382	0
Gain on sale of loans and leases	0	7	106
Gain on securities	3,275	0	4,752
FDIC loss sharing expense, net	(4,399)	(4,360)	(11,430)
Other income	8,643	4,331	6,329
Total noninterest income	20,871	12,703	4,691
Non-interest expense:
Compensation	47,737	45,930	28,627
Occupancy	10,600	10,745	7,595
Data processing	4,308	4,050	2,540
Other professional services	3,221	3,181	1,523
Insurance and assessments	3,025	3,115	1,593
Intangible asset amortization	1,501	1,619	1,364
Leased equipment depreciation	3,103	3,103	0
Foreclosed assets expense (income), net	336	1,938	(1,861)
Acquisition, integration and reorganization costs	2,000	7,381	2,200
Other expense	8,529	10,243	6,583
Total noninterest expense	84,360	91,305	50,164
Earnings from continuing operations before taxes	119,152	114,318	41,186
Income tax expense	(46,073)	(43,261)	(15,281)
Net earnings from continuing operations	73,079	71,057	25,905
Loss from discontinued operations before taxes	0	(105)	(1,413)
Income tax benefit	0	47	588
Net loss from discontinued operations	0	(58)	(825)
Net earnings	$ 73,079	$ 70,999	$ 25,080
Earnings Per Share, Basic [Abstract]
Net earnings from continuing operations	$ 0.71	$ 0.69	$ 0.57
Net earnings	$ 0.71	$ 0.69	$ 0.55
Earnings Per Share, Diluted [Abstract]
Net earnings from continuing operations	$ 0.71	$ 0.69	$ 0.57
Net earnings	$ 0.71	$ 0.69	$ 0.55
Dividends [Abstract]
Dividends declared per share	$ 0.50	$ 0.50	$ 0.25

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Investments Investments (Notes)

3 Months Ended

Mar. 31, 2015

Investments, Debt and Equity Securities [Abstract]

Investment

Note 5. Investment Securities     

Securities Available-for-Sale

The following table presents amortized cost, gross unrealized gains and losses, and carrying values of securities available-for-sale as of the dates indicated:

	March 31, 2015									December 31, 2014
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value		Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	(In thousands)
Residential mortgage-backed securities:
Government agency and
government-sponsored enterprise
pass-through securities	$	439,696	$	19,327	$	(131	)	$	458,892	$	515,902	$	20,142	$	(372	)	$	535,672
Government agency and
government-sponsored enterprise
collateralized mortgage obligations	269,766		6,909		(451		)	276,224		275,513		3,513		(1,080		)	277,946
Covered private label collateralized
mortgage obligations	26,496		7,014		(66		)	33,444		26,889		7,153		(95		)	33,947
Other private label collateralized
mortgage obligations	9,645		52		(47		)	9,650		10,961		46		(93		)	10,914
Municipal securities	579,344		15,708		(2,199		)	592,853		521,499		15,899		(1,282		)	536,116
Corporate debt securities	47,485		683		(423		)	47,745		110,074		597		(562		)	110,109
Collateralized loan obligations	112,883		922		—			113,805		—		—		—			—
Government-sponsored enterprise debt
securities	36,249		1,156		—			37,405		36,232		525		—			36,757
Other securities	25,451		34		(94		)	25,391		25,801		33		(118		)	25,716
Total	$	1,547,015	$	51,805	$	(3,411	)	$	1,595,409	$	1,522,871	$	47,908	$	(3,602	)	$	1,567,177

Other securities consist primarily of asset‑backed securities. See Note 11, Fair Value Measurements, for information on fair value measurements and methodology.

As of March 31, 2015, securities available‑for‑sale with a carrying value of $354.7 million were pledged as collateral for borrowings, public deposits and other purposes as required by various statutes and agreements.

During the three months endedMarch 31, 2015 and 2014, we purchased $196.6 million and $140.0 million in securities available-for-sale.

During the three months endedMarch 31, 2015, we sold $13.9 million of Texas municipal securities for an $883,000 gain, $67.5 million in corporate debt securities for a realized loss of $232,000 and $60.3 million in government agency and government-sponsored enterprise ("GSE") pass-through securities for a realized gross gain of $2.6 million. These securities were sold as part of our investment portfolio risk management activities. During the three months endedMarch 31, 2014, we sold $137.3 million in GSE pass through securities for which we realized a gross gain of $4.8 million. These securities were sold to take advantage of favorable market conditions for premium coupon seasoned GSE pass through securities. We redeployed the proceeds into single-maturity investments that were expected to perform better under the current market conditions. 

Realized gains or losses resulting from the sale of securities are calculated using the specific identification method and included in gain on securities. During the three months endedMarch 31, 2015 and 2014, we had $4.3 million and $12.9 million of net unrealized after-tax gains as a component of accumulated other comprehensive income.

Unrealized Losses on Securities Available-for-Sale

The following tables present the gross unrealized losses and fair values of securities available-for-sale that were in unrealized loss positions, for which other-than-temporary impairments have not been recognized in earnings, as of the dates indicated:

	March 31, 2015
	Less Than 12 Months					12 Months or More					Total
	Fair Value		Gross Unrealized Losses			Fair Value		Gross Unrealized Losses			Fair Value		Gross Unrealized Losses
	(In thousands)
Residential mortgage-backed securities:
Government agency and government-
sponsored enterprise pass-through
securities	$	5,031	$	(42	)	$	10,085	$	(89	)	$	15,116	$	(131	)
Government agency and government-
sponsored enterprise collateralized
mortgage obligations	—		—			14,403		(451		)	14,403		(451		)
Covered private label collateralized
mortgage obligations	726		(6		)	643		(60		)	1,369		(66		)
Other private label collateralized
mortgage obligations	1,206		(46		)	360		(1		)	1,566		(47		)
Municipal securities	112,361		(1,277		)	38,687		(922		)	151,048		(2,199		)
Corporate debt securities	25,104		(423		)	—		—			25,104		(423		)
Other securities	6,453		(72		)	10,020		(22		)	16,473		(94		)
Total	$	150,881	$	(1,866	)	$	74,198	$	(1,545	)	$	225,079	$	(3,411	)

	December 31, 2014
	Less Than 12 Months					12 Months or More					Total
	Fair Value		Gross Unrealized Losses			Fair Value		Gross Unrealized Losses			Fair Value		Gross Unrealized Losses
	(In thousands)
Residential mortgage-backed securities:
Government agency and government-
sponsored enterprise pass-through
securities	$	10,711	$	(13	)	$	27,100	$	(359	)	$	37,811	$	(372	)
Government agency and government-
sponsored enterprise collateralized
mortgage obligations	23,908		(73		)	40,652		(1,007		)	64,560		(1,080		)
Covered private label collateralized
mortgage obligations	—		—			1,000		(95		)	1,000		(95		)
Other private label collateralized
mortgage obligations	1,618		(93		)	—		—			1,618		(93		)
Municipal securities	11,854		(66		)	84,822		(1,216		)	96,676		(1,282		)
Corporate debt securities	52,071		(547		)	10,131		(15		)	62,202		(562		)
Other securities	6,440		(90		)	10,019		(28		)	16,459		(118		)
Total	$	106,602	$	(882	)	$	173,724	$	(2,720	)	$	280,326	$	(3,602	)

We reviewed the securities that were in a loss position at March 31, 2015, and concluded their losses were a result of the level of market interest rates relative to the types of securities and pricing changes caused by shifting supply and demand dynamics and not a result of downgraded credit ratings or other indicators of deterioration of the underlying issuers' ability to repay. Accordingly, we determined the securities were temporarily impaired and we did not recognize such impairment in the condensed consolidated statements of earnings. We occasionally sell securities for risk management purposes to reduce risks related to price volatility and duration. We do not foresee having to sell these securities strictly for liquidity needs and believe that it is more likely than not we would not be required to sell these securities before recovery of their amortized cost.

Contractual Maturities

The following table presents the contractual maturities of our available-for-sale securities portfolio based on amortized cost and carrying value as of the date indicated:

	March 31, 2015
	Amortized Cost		Estimated Fair Value
	(In thousands)
Due in one year or less	$	18,358	$	18,538
Due after one year through five years	76,173		76,515
Due after five years through ten years	276,933		287,023
Due after ten years	1,175,551		1,213,333
Total securities available-for-sale	$	1,547,015	$	1,595,409

Mortgage-backed securities have contractual terms to maturity, but require periodic payments to reduce principal. In addition, expected maturities may differ from contractual maturities because obligors and/or issuers may have the right to call or prepay obligations with or without call or prepayment penalties.

FHLB Stock

At March 31, 2015, we had a $28.9 million investment in Federal Home Loan Bank of San Francisco ("FHLB") stock carried at cost. During the three months endedMarch 31, 2015, FHLB stock declined $11.7 million due primarily to $15.6 million in redemptions, offset partially by $3.9 million in purchases. We evaluated the carrying value of our FHLB stock investment at March 31, 2015, and determined that it was not impaired. Our evaluation considered the long-term nature of the investment, the current financial and liquidity position of the FHLB, repurchase activity of excess stock by the FHLB at its carrying value, the return on the investment, and our intent and ability to hold this investment for a period of time sufficient to recover our recorded investment.

Interest Income on Investment Securities

The following table presents the composition of our interest income on investment securities for the periods indicated:

	Three Months Ended
	March 31, 2015		December 31, 2014		March 31, 2014
	(In thousands)
Taxable interest	$	7,473	$	7,697	$	6,920
Non-taxable interest	3,894		3,593		3,328
Dividend income	828		915		575
Total interest income on investment securities	$	12,195	$	12,205	$	10,823

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Goodwill and Other Intangible Assets Goodwill and Other Intangilbe Assets (Notes)

3 Months Ended

Mar. 31, 2015

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Intangible Assets Disclosure

Note 4.  Goodwill and Other Intangible Assets

Goodwill arises from the acquisition method of accounting for business combinations and represents the excess of the purchase price over the fair value of the net assets and other identifiable intangible assets acquired. Our intangible assets with definite lives are core deposit intangibles ("CDI") and customer relationship intangibles ("CRI"). In the first quarter of 2015, we finalized the estimated fair value of the deferred tax assets acquired in the CapitalSource Inc. merger which resulted in a $7.9 million decrease with a corresponding adjustment to increase goodwill.

Goodwill and other intangible assets deemed to have indefinite lives generated from purchase business combinations are not subject to amortization and are instead tested for impairment no less than annually. Impairment exists when the carrying value of goodwill exceeds its implied fair value. An impairment loss would be recognized in an amount equal to that excess and would be included in “Noninterest expense” in the condensed consolidated statements of earnings.

CDI and CRI are amortized over their respective estimated useful lives and reviewed for impairment at least quarterly. The amortization expense represents the estimated decline in the value of the underlying deposits or loan and lease customers acquired. The weighted average amortization period remaining for all of our CDI and CRI is 4.3 years. The aggregate CDI and CRI amortization expense is expected to be $6.0 million for 2015. The estimated aggregate amortization expense related to these intangible assets for each of the next five years is $4.1 million for 2016, $2.3 million for 2017, $2.0 million for 2018, $1.7 million for 2019, and $953,000 for 2020.

The following table presents the changes in the carrying amount of goodwill for the period indicated:    

	Goodwill
	(In thousands)
Balance, December 31, 2014	$	1,720,479
To adjust acquired CapitalSource Inc. deferred tax assets	7,901
Balance, March 31, 2015	$	1,728,380

The following table presents the changes in CDI and CRI and the related accumulated amortization for the periods indicated:

	Three Months Ended
	March 31,			December 31,			March 31,
	2015			2014			2014
	(In thousands)
Gross Amount of CDI and CRI:
Balance, end of period	$	53,090		$	53,090		$	48,963
Accumulated Amortization:
Balance, beginning of period	(35,886		)	(34,267		)	(31,715		)
Amortization	(1,501		)	(1,619		)	(1,364		)
Balance, end of period	(37,387		)	(35,886		)	(33,079		)
Net CDI and CRI, end of period	$	15,703		$	17,204		$	15,884

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Subsequent Events (Notes)

3 Months Ended

Mar. 31, 2015

Subsequent Events [Abstract]

Subsequent Events

Note 16. Subsequent Events

We have evaluated events that have occurred subsequent to March 31, 2015 and have concluded there are no subsequent events that would require recognition in the accompanying consolidated financial statements.

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Earnings Per Share Earnings per share (Notes)

3 Months Ended

Mar. 31, 2015

Earnings Per Share [Abstract]

Earnings Per Share

The following table presents the computations of basic and diluted net earnings per share for the periods indicated:

	Three Months Ended
	March 31, 2015			December 31, 2014			March 31, 2014
	(Dollars in thousands, except per share data)
Basic earnings per share:
Net earnings from continuing operations	$	73,079		$	71,057		$	25,905
Less: earnings allocated to unvested restricted stock(1)	(819		)	(810		)	(500		)
Net earnings from continuing operations allocated to common shares	72,260			70,247			25,405
Net (loss) earnings from discontinued operations allocated to common shares	—			(57		)	(804		)
Net earnings allocated to common shares	$	72,260		$	70,190		$	24,601
Weighted-average basic shares and unvested restricted stock outstanding	103,035			103,045			45,799
Less: weighted-average unvested restricted stock outstanding	(1,122		)	(1,132		)	(1,148		)
Weighted-average basic shares outstanding	101,913			101,913			44,651
Basic earnings per share:
Net earnings from continuing operations	$	0.71		$	0.69		$	0.57
Net loss from discontinued operations	—			—			(0.02		)
Net earnings	$	0.71		$	0.69		$	0.55
Diluted earnings per share:
Net earnings from continuing operations allocated to common shares	$	72,260		$	70,247		$	25,405
Net (loss) earnings from discontinued operations allocated to common shares	—			(57		)	(804		)
Net earnings allocated to common shares	$	72,260		$	70,190		$	24,601
Weighted-average basic shares outstanding	101,913			101,913			44,651
Diluted earnings per share:
Net earnings from continuing operations	$	0.71		$	0.69		$	0.57
Net loss from discontinued operations	—			—			(0.02		)
Net earnings	$	0.71		$	0.69		$	0.55

________________________

(1) Represents cash dividends paid to holders of unvested restricted stock, net of estimated forfeitures, plus undistributed earnings amounts available to holders of unvested restricted stock, if any.

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FDIC Loss Sharing Asset FDIC Loss Sharing Asset (Notes)

3 Months Ended

Mar. 31, 2015

FDIC Loss-Sharing Arrangements [Abstract]

FDIC Loss Sharing Asset Disclosure

Note 8.  FDIC Loss Sharing Asset

We are a party to four loss sharing agreements with the FDIC. Such agreements cover a substantial portion of losses incurred on acquired covered loans and other real estate owned. The loss sharing agreements relate to the acquisitions of: (1) Affinity Bank ("Affinity") in August 2009, (2) Los Padres Bank ("Los Padres") in August 2010, (3) Western Commercial Bank ("Western Commercial") in connection with the May 2013 FCAL acquisition, and (4) San Luis Trust Bank ("San Luis") in connection with the May 2013 First California Financial Group, Inc. ("FCAL") acquisition. Generally, under the terms of the loss sharing agreements, the FDIC is responsible for 80% of losses in connection with covered assets and is entitled to receive 80% of loss recoveries on the covered assets during the applicable contractual periods. The loss sharing provisions for the Affinity Bank non-single family covered assets expired in the third quarter of 2014; accordingly, further activity will be limited only to recoveries through the third quarter of 2017 for assets covered by this loss sharing agreement.

Both the Western Commercial and San Luis loss sharing agreements contain true-up provisions, under which we will owe the FDIC amounts at the end of the loss sharing agreements based on the performance of the covered assets. The true-up liability is included in "Accrued interest payable and other liabilities" in the condensed consolidated balance sheets.

The following table presents information about the composition of the FDIC loss sharing asset, the true‑up liability, and the non‑single family and the single family covered assets as of the date indicated:

	March 31, 2015
	Affinity Bank		Los Padres Bank		Western Commercial Bank		San Luis Trust Bank		Total
	(In thousands)
FDIC loss sharing asset	$	140	$	8,161	$	710	$	7,521	$	16,532
True‑up liability	N/A		N/A		$	1,773	$	5,517	$	7,290
Non-single family covered assets(1)	$	105,614	$	73,072	$	8,799	$	26,001	$	213,486
Single family covered assets	$	10,932	$	55,447	N/A		$	29,101	$	95,480
Loss sharing expiration dates:
Non‑single family	3rd Quarter 2014		3rd Quarter 2015		4th Quarter 2015		1st Quarter 2016
Single family	3rd Quarter 2019		3rd Quarter 2020		N/A		1st Quarter 2021
Loss recovery expiration dates:
Non‑single family	3rd Quarter 2017		3rd Quarter 2018		4th Quarter 2018		1st Quarter 2019
Single family	3rd Quarter 2019		3rd Quarter 2020		N/A		1st Quarter 2021

_________________________

(1) Excludes securities

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Foreclosed Assets Foreclosed Assets (Details 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015
Business Acquisition [Line Items]
Balance, December 31, 2014	$ 43,721	[1]
Reductions related to sales	(8,051)
Balance, March 31, 2015	35,940	[1]
NonCovered [Member]
Business Acquisition [Line Items]
Foreclosures	394
Provision for losses	$ (124)

[1] (1)As of March 31, 2015 and December 31, 2014 , the amounts of covered foreclosed assets were $8.1 million and $9.3 million.

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Loans and Credit Quality

3 Months Ended

Mar. 31, 2015

Receivables [Abstract]

Loans and Credit Quality

Note 6.  Loans and Leases

The Company’s loan and lease portfolio includes originated and purchased loans and leases. Originated loans and leases and purchased loans and leases for which there was no evidence of credit deterioration at their acquisition date and for which it was probable that we would be able to collect all contractually required payments, are referred to collectively as non-purchased credit impaired loans, or "Non-PCI loans." Purchased loans for which there was, at the acquisition date, evidence of credit deterioration since their origination and it was probable that we would be unable to collect all contractually required payments are referred to as purchased credit impaired loans, or "PCI loans".

Non-PCI loans are carried at the principal amount outstanding, net of deferred fees and costs, and in the case of acquired loans, net of purchase discounts and premiums. Deferred fees and costs and purchase discounts and premiums on acquired non-impaired loans are recognized as an adjustment to interest income over the contractual life of the loans using the effective interest method or taken into income when the related loans are paid off or sold.

PCI loans are accounted for in accordance with ASC Subtopic 310‑30, “Loans and Debt Securities Acquired with Deteriorated Credit Quality". For PCI loans, at the time of acquisition we (i) calculate the contractual amount and timing of undiscounted principal and interest payments (the "undiscounted contractual cash flows") and (ii) estimate the amount and timing of undiscounted expected principal and interest payments (the "undiscounted expected cash flows"). The difference between the undiscounted contractual cash flows and the undiscounted expected cash flows is the nonaccretable difference. The difference between the undiscounted cash flows expected to be collected and the estimated fair value of the acquired loans is the accretable yield. The nonaccretable difference represents an estimate of the loss exposure of principal and interest related to the PCI loan portfolio; such amount is subject to change over time based on the performance of such loans. The carrying value of PCI loans is reduced by payments received, both principal and interest, and increased by the portion of the accretable yield recognized as interest income.

The following table summarizes the composition of our loan and lease portfolio as of the dates indicated:

	March 31, 2015									December 31, 2014
	Non-PCI									Non-PCI
	Loans			PCI						Loans			PCI
	and Leases			Loans			Total			and Leases			Loans			Total
	(In thousands)
Real estate mortgage	$	5,601,937		$	226,502		$	5,828,439		$	5,350,827		$	256,489		$	5,607,316
Real estate construction	331,108			1,897			333,005			309,162			6,924			316,086
Commercial	6,021,282			25,664			6,046,946			5,852,420			27,155			5,879,575
Consumer	93,619			283			93,902			101,423			284			101,707
Total gross loans and leases	12,047,946			254,346			12,302,292			11,613,832			290,852			11,904,684
Deferred fees and costs	(30,065		)	(61		)	(30,126		)	(22,191		)	(61		)	(22,252		)
Total loans and leases, net of deferred fees	12,017,881			254,285			12,272,166			11,591,641			290,791			11,882,432
Allowance for loan and lease losses	(79,680		)	(12,698		)	(92,378		)	(70,456		)	(13,999		)	(84,455		)
Total net loans and leases	$	11,938,201		$	241,587		$	12,179,788		$	11,521,185		$	276,792		$	11,797,977

The following tables present a summary of the activity in the allowance for loan and lease losses on Non‑PCI loans and leases by portfolio segment and PCI loans for the periods indicated:

	Three Months Ended March 31, 2015
	Real Estate Mortgage			Real Estate Construction			Commercial			Consumer			Total Non-PCI			Total PCI			Total
	(In thousands)
Allowance for Loan and Lease Losses:
Balance, beginning of period	$	25,097		$	4,248		$	39,858		$	1,253		$	70,456		$	13,999		$	84,455
Charge-offs	(1,453		)	—			(8,395		)	(63		)	(9,911		)	(579		)	(10,490		)
Recoveries	1,295			632			410			194			2,531			11			2,542
Provision (negative provision)	5,972			(2,707		)	13,921			(582		)	16,604			(733		)	15,871
Balance, end of period	$	30,911		$	2,173		$	45,794		$	802		$	79,680		$	12,698		$	92,378
Amount of the allowance applicable to loans and leases:
Individually evaluated for impairment	$	1,500		$	55		$	10,493		$	178		$	12,226
Collectively evaluated for impairment	$	29,411		$	2,118		$	35,301		$	624		$	67,454
Acquired loans with deteriorated credit quality																$	12,698
Loan and Leases:
Ending balance	$	5,588,430		$	328,709		$	6,007,067		$	93,675		$	12,017,881		$	254,285		$	12,272,166
The ending balance of the loan and lease portfolio is composed of loans and leases:
Individually evaluated for impairment	$	59,733		$	8,639		$	103,208		$	3,729		$	175,309
Collectively evaluated for impairment	$	5,528,697		$	320,070		$	5,903,859		$	89,946		$	11,842,572
Acquired loans with deteriorated credit quality																$	254,285

	Three Months Ended March 31, 2014
	Real Estate Mortgage			Real Estate Construction			Commercial			Consumer			Total Non-PCI			Total PCI			Total
	(In thousands)
Allowance for loan and lease losses:
Balance, beginning of period	$	26,078		$	4,298		$	26,921		$	2,944		$	60,241		$	21,793		$	82,034
Charge-offs	(94		)	—			(1,441		)	(15		)	(1,550		)	—			(1,550		)
Recoveries	261			24			377			27			689			51			740
Provision (negative provision)	(1,893		)	(219		)	1,883			829			600			(644		)	(44		)
Balance, end of period	$	24,352		$	4,103		$	27,740		$	3,785		$	59,980		$	21,200		$	81,180
Amount of the allowance applicable to loans and leases:
Individually evaluated for impairment	$	2,690		$	251		$	5,337		$	387		$	8,665
Collectively evaluated for impairment	$	21,662		$	3,852		$	22,403		$	3,398		$	51,315
Acquired loans with deteriorated credit quality																$	21,200
Loan and Leases:
Ending balance	$	2,320,554		$	240,073		$	1,201,142		$	66,782		$	3,828,551		$	332,516		$	4,161,067
The ending balance of the loan and lease portfolio is composed of loans and leases:
Individually evaluated for impairment	$	58,532		$	12,926		$	17,792		$	3,972		$	93,222
Collectively evaluated for impairment	$	2,262,022		$	227,147		$	1,183,350		$	62,810		$	3,735,329
Acquired loans with deteriorated credit quality																$	332,516

Non‑Purchased Credit Impaired (Non‑PCI) Loans and Leases

The following table presents the credit risk rating categories for Non‑PCI loans and leases by portfolio segment and class as of the dates indicated. Nonclassified loans and leases are those with a credit risk rating of either pass or special mention, while classified loans and leases are those with a credit risk rating of either substandard or doubtful.

	March 31, 2015						December 31, 2014
	Classified		Nonclassified		Total		Classified		Nonclassified		Total
	(In thousands)
Real estate mortgage:
Hospitality	$	16,928	$	595,161	$	612,089	$	17,761	$	542,458	$	560,219
SBA	10,919		377,857		388,776		11,141		364,786		375,927
Other	69,859		4,517,706		4,587,565		68,084		4,336,330		4,404,414
Total real estate mortgage	97,706		5,490,724		5,588,430		96,986		5,243,574		5,340,560
Real estate construction:
Residential	398		121,918		122,316		402		96,326		96,728
Commercial	1,456		204,937		206,393		3,346		207,061		210,407
Total real estate construction	1,854		326,855		328,709		3,748		303,387		307,135
Commercial:
Collateralized	21,265		373,123		394,388		22,433		416,754		439,187
Unsecured	1,267		142,047		143,314		1,323		130,501		131,824
Asset-based	11,304		1,708,473		1,719,777		11,547		1,783,304		1,794,851
Cash flow	105,763		2,687,421		2,793,184		83,321		2,376,530		2,459,851
Equipment finance	86,938		827,078		914,016		15,973		953,516		969,489
SBA	3,128		39,260		42,388		3,207		44,054		47,261
Total commercial	229,665		5,777,402		6,007,067		137,804		5,704,659		5,842,463
Consumer	3,957		89,718		93,675		4,073		97,410		101,483
Total Non-PCI loans and leases	$	333,182	$	11,684,699	$	12,017,881	$	242,611	$	11,349,030	$	11,591,641

In addition to our internal risk rating process, our federal and state banking regulators, as an integral part of their examination process, periodically review the Company’s loan and lease risk rating classifications. Our regulators may require the Company to recognize rating downgrades based on their judgments related to information available to them at the time of their examinations. Risk rating downgrades generally result in higher allowances for credit losses.

The following tables present an aging analysis of our Non‑PCI loans and leases by portfolio segment and class as of the dates indicated:

	March 31, 2015
	30-89 Days Past Due		90 or More  Days Past Due		Total Past Due		Current		Total
	(In thousands)
Real estate mortgage:
Hospitality	$	—	$	—	$	—	$	612,089	$	612,089
SBA	5,582		5,487		11,069		377,707		388,776
Other	6,234		5,319		11,553		4,576,012		4,587,565
Total real estate mortgage	11,816		10,806		22,622		5,565,808		5,588,430
Real estate construction:
Residential	—		—		—		122,316		122,316
Commercial	—		—		—		206,393		206,393
Total real estate construction	—		—		—		328,709		328,709
Commercial:
Collateralized	1,782		424		2,206		392,182		394,388
Unsecured	—		16		16		143,298		143,314
Asset-based	—		—		—		1,719,777		1,719,777
Cash flow	—		—		—		2,793,184		2,793,184
Equipment finance	23,409		—		23,409		890,607		914,016
SBA	788		1,362		2,150		40,238		42,388
Total commercial	25,979		1,802		27,781		5,979,286		6,007,067
Consumer	9		3,196		3,205		90,470		93,675
Total Non-PCI loans and leases	$	37,804	$	15,804	$	53,608	$	11,964,273	$	12,017,881

	December 31, 2014
	30-89 Days Past Due		90 or More Days Past Due		Total Past Due		Current		Total
	(In thousands)
Real estate mortgage:
Hospitality	$	—	$	—	$	—	$	560,219	$	560,219
SBA	5,530		4,357		9,887		366,040		375,927
Other	6,098		7,630		13,728		4,390,686		4,404,414
Total real estate mortgage	11,628		11,987		23,615		5,316,945		5,340,560
Real estate construction:
Residential	—		—		—		96,728		96,728
Commercial	—		715		715		209,692		210,407
Total real estate construction	—		715		715		306,420		307,135
Commercial:
Collateralized	878		965		1,843		437,344		439,187
Unsecured	69		45		114		131,710		131,824
Asset-based	—		—		—		1,794,851		1,794,851
Cash flow	—		232		232		2,459,619		2,459,851
Equipment finance	6,525		366		6,891		962,598		969,489
SBA	205		1,362		1,567		45,694		47,261
Total commercial	7,677		2,970		10,647		5,831,816		5,842,463
Consumer	101		3,146		3,247		98,236		101,483
Total Non-PCI loans and leases	$	19,406	$	18,818	$	38,224	$	11,553,417	$	11,591,641

At March 31, 2015 and December 31, 2014, the Company had no loans and leases (excluding PCI loans) that were greater than 90 days past due and still accruing interest. It is the Company’s policy to discontinue accruing interest when principal or interest payments are past due 90 days or more unless the loan is both well secured and in the process of collection or when, in the judgment of management, there is a reasonable doubt as to the collectibility of a loan or lease in the normal course of business. Interest income on nonaccrual loans is recognized only to the extent cash is received and the principal balance of the loan is deemed collectible.

The following table presents our nonaccrual and performing Non‑PCI loans and leases by portfolio segment and class as of the dates indicated:

	March 31, 2015						December 31, 2014
	Nonaccrual		Performing		Total		Nonaccrual		Performing		Total
	(In thousands)
Real estate mortgage:
Hospitality	$	8,088	$	604,001	$	612,089	$	6,366	$	553,853	$	560,219
SBA	10,919		377,857		388,776		11,141		364,786		375,927
Other	18,328		4,569,237		4,587,565		20,105		4,384,309		4,404,414
Total real estate mortgage	37,335		5,551,095		5,588,430		37,612		5,302,948		5,340,560
Real estate construction:
Residential	379		121,937		122,316		381		96,347		96,728
Commercial	453		205,940		206,393		1,178		209,229		210,407
Total real estate construction	832		327,877		328,709		1,559		305,576		307,135
Commercial:
Collateralized	3,601		390,787		394,388		5,450		433,737		439,187
Unsecured	594		142,720		143,314		639		131,185		131,824
Asset-based	4,159		1,715,618		1,719,777		4,574		1,790,277		1,794,851
Cash flow	15,172		2,778,012		2,793,184		15,964		2,443,887		2,459,851
Equipment finance	71,039		842,977		914,016		11,131		958,358		969,489
SBA	3,128		39,260		42,388		3,207		44,054		47,261
Total commercial	97,693		5,909,374		6,007,067		40,965		5,801,498		5,842,463
Consumer	3,474		90,201		93,675		3,485		97,998		101,483
Total Non-PCI loans and leases	$	139,334	$	11,878,547	$	12,017,881	$	83,621	$	11,508,020	$	11,591,641

At March 31, 2015, nonaccrual loans and leases totaled $139.3 million. Nonaccrual loans and leases included all loans and leases 90 or more days past due of $15.8 million, $21.7 million of loans 30 to 89 days past due, and $101.8 million of current loans that were placed on nonaccrual status based on management’s judgment regarding their collectibility. Nonaccrual loans and leases totaled $83.6 million at December 31, 2014, including all loans and leases 90 or more days past due of $18.8 million, $8.7 million of loans 30 to 89 days past due, and $56.1 million of current loans that were placed on nonaccrual status based on management’s judgment regarding their collectibility. The increase in nonaccrual loans and leases generally, and equipment finance loans and leases specifically, was due to three relationships totaling $64.9 million that are related to the oil and gas industries and which have been adversely impacted by continued low oil prices.

Non‑PCI nonaccrual loans and leases and performing restructured loans are considered impaired for reporting purposes. The following table presents the composition of our impaired loans and leases as of the dates indicated:

	March 31, 2015						December 31, 2014
			Performing		Total				Performing		Total
	Nonaccrual		Restructured		Impaired		Nonaccrual		Restructured		Impaired
	Loans/Leases		Loans		Loans/Leases		Loans/Leases		Loans		Loans/Leases
	(In thousands)
Real estate mortgage	$	37,335	$	22,398	$	59,733	$	37,612	$	20,245	$	57,857
Real estate construction	832		7,807		8,639		1,559		8,996		10,555
Commercial	97,693		5,515		103,208		40,965		5,744		46,709
Consumer	3,474		255		3,729		3,485		259		3,744
Total	$	139,334	$	35,975	$	175,309	$	83,621	$	35,244	$	118,865

The following tables present information regarding our Non‑PCI impaired loans and leases by portfolio segment and class as of and for the dates indicated:

	March 31, 2015						December 31, 2014
	Recorded Investment		Unpaid Principal Balance		Related Allowance		Recorded Investment		Unpaid Principal Balance		Related Allowance
	(In thousands)
With An Allowance Recorded:
Real estate mortgage:
Hospitality	$	1,930	$	1,930	$	31	$	1,946	$	1,945	$	47
SBA	—		—		—		—		—		—
Other	12,986		13,169		1,469		9,136		9,233		646
Real estate construction:
Residential	759		759		41		763		763		46
Commercial	403		401		14		1,128		4,934		23
Commercial:
Collateralized	4,811		5,486		3,497		4,630		5,246		3,771
Unsecured	1,055		1,067		913		912		924		799
Asset-based	47		157		47		137		247		137
Cash flow	14,974		17,694		2,522		15,578		17,970		2,667
Equipment finance	9,347		9,764		3,514		6,956		7,268		2,601
SBA	—		—		—		—		—		—
Consumer	383		386		178		143		142		37
With No Related Allowance Recorded:
Real estate mortgage:
Hospitality	$	8,088	$	10,096	$	—	$	6,366	$	7,593	$	—
SBA	10,919		15,030		—		11,141		14,708		—
Other	25,810		39,548		—		29,268		40,643		—
Real estate construction:
Residential	20		19		—		21		19		—
Commercial	7,457		7,571		—		8,643		8,749		—
Commercial:
Collateralized	3,324		4,234		—		5,566		6,877		—
Unsecured	519		564		—		725		809		—
Asset-based	4,111		5,220		—		4,436		5,415		—
Cash flow	198		735		—		387		919		—
Equipment finance	61,694		67,850		—		4,175		7,528		—
SBA	3,128		4,762		—		3,207		4,920		—
Consumer	3,346		3,506		—		3,601		3,768		—
Total Non-PCI Loans and Leases With and Without an Allowance Recorded:
Real estate mortgage	$	59,733	$	79,773	$	1,500	$	57,857	$	74,122	$	693
Real estate construction	8,639		8,750		55		10,555		14,465		69
Commercial	103,208		117,533		10,493		46,709		58,123		9,975
Consumer	3,729		3,892		178		3,744		3,910		37
Total	$	175,309	$	209,948	$	12,226	$	118,865	$	150,620	$	10,774

	Three Months Ended March 31,
	2015				2014
	Weighted Average Balance(1)		Interest Income Recognized		Weighted Average Balance(1)		Interest Income Recognized
	(In thousands)
With An Allowance Recorded:
Real estate mortgage:
Hospitality	$	1,930	$	19	$	5,658	$	20
SBA	—		—		1,092		15
Other	12,783		136		16,174		119
Real estate construction:
Residential	759		4		774		4
Commercial	403		5		5		—
Commercial:
Collateralized	4,646		33		3,765		6
Unsecured	1,055		11		742		6
Asset-based	47		—		304		—
Cash flow	14,973		—		—		—
Equipment finance	4,581		—		—		—
SBA	—		—		919		10
Consumer	383		4		2,151		4
With No Related Allowance Recorded:
Real estate mortgage:
Hospitality	$	7,836	$	—	$	2,971	$	—
SBA	9,836		—		2,519		—
Other	24,219		80		23,549		63
Real estate construction:
Residential	20		—		—		—
Commercial	7,457		271		5,491		25
Commercial:
Collateralized	3,324		48		4,861		6
Unsecured	519		1		326		—
Asset-based	4,111		—		—		—
Cash flow	198		—		—		—
Equipment finance	7,537		—		220		—
SBA	3,128		45		3,132		2
Consumer	3,345		—		251		1
Total Non-PCI Loans and Leases With and Without an Allowance Recorded:
Real estate mortgage	$	56,604	$	235	$	51,963	$	217
Real estate construction	8,639		280		6,270		29
Commercial	44,119		138		14,269		30
Consumer	3,728		4		2,402		5
Total	$	113,090	$	657	$	74,904	$	281

_________________________

(1) For the loans and leases (excluding PCI loans) reported as impaired at March 31, 2015 and 2014, amounts were calculated based on the period of time such loans and leases were impaired during the reported period.

Troubled debt restructurings are a result of rate reductions, term extensions, fee concessions, and debt forgiveness or a combination thereof. The following table presents new troubled debt restructurings of Non-PCI loans for the periods indicated:

	Three Months Ended March 31, 2015					Three Months Ended March 31, 2014
Troubled Debt Restructurings:	Number of Loans	Pre- Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment		Number of Loans	Pre- Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment
	(Dollars in thousands)
Real estate mortgage:
Other	14	$	6,074	$	5,886	4	$	2,515	$	2,515
Real estate construction:
Commercial	1	2,610		2,610		2	4,927		4,927
Commercial:
Collateralized	6	1,399		1,399		4	3,287		3,287
Unsecured	1	195		195		2	38		38
Cash flow	2	566		387		—	—		—
Equipment finance	4	4,133		4,133		—	—		—
SBA	1	—		—		1	238		238
Consumer	1	91		91		1	124		124
Total	30	$	15,068	$	14,701	14	$	11,129	$	11,129

The following table presents troubled debt restructurings that subsequently defaulted for the periods indicated:

	Three Months Ended March 31,
	2015				2014
Troubled Debt Restructurings	Number of	Recorded			Number of	Recorded
That Subsequently Defaulted:	Loans	Investment(1)			Loans	Investment(1)
	(Dollars in thousands)
Real estate mortgage - Other	2	$	1,519		—	$	—
Commercial:
Collateralized	1	385			2	559
Unsecured	—	—			1	21
Asset-based	—	—			1	301
Total	3	$	1,904	(2)	4	$	881	(3)

_________________________

(1) The population of defaulted restructured loans for the period indicated includes only those loans restructured during the preceding 12-month period. The table excludes defaulted troubled restructurings in those classes for which the recorded investment was zero at the end of the period.

(2) Represents the balance at March 31, 2015, and is net of charge-offs of $772,000.

(3) Represents the balance at March 31, 2014, and there were no charge-offs.

Purchased Credit Impaired (PCI) Loans

The following table reflects the PCI loans by portfolio segment as of the dates indicated:

	March 31, 2015			December 31, 2014
	(In thousands)
Real estate mortgage	$	268,777		$	299,660
Real estate construction	2,540			7,743
Commercial	31,185			32,904
Consumer	326			332
Total gross PCI loans	302,828			340,639
Less:
Discount	(48,543		)	(49,848		)
Allowance for loan losses	(12,698		)	(13,999		)
Total net PCI loans	$	241,587		$	276,792

The following table summarizes the changes in the carrying amount of PCI loans and accretable yield on those loans for the period indicated:

	Carrying Amount			Accretable Yield
	(In thousands)
Balance, December 31, 2014	$	276,792		$	(106,856	)
Accretion	10,183			10,183
Payments received	(46,121		)	—
Increase in expected cash flows, net	—			(6,190		)
Negative provision for credit losses	733			—
Balance, March 31, 2015	$	241,587		$	(102,863	)

The following table presents PCI loans by credit risk rating categories and portfolio segment as of the dates indicated. Nonclassified loans are those with a credit risk rating of either pass or special mention, while classified loans are those with a credit risk rating of either substandard or doubtful.

	March 31, 2015						December 31, 2014
	Classified		Nonclassified		Total		Classified		Nonclassified		Total
	(In thousands)
Real estate mortgage	$	77,548	$	148,902	$	226,450	$	101,161	$	155,281	$	256,442
Real estate construction	1,888		—		1,888		3,901		3,010		6,911
Commercial	25,476		188		25,664		26,942		212		27,154
Consumer	283		—		283		284		—		284
Total PCI loans	$	105,195	$	149,090	$	254,285	$	132,288	$	158,503	$	290,791

In addition to our internal risk rating process, our federal and state banking regulators, as an integral part of their examination process, periodically review the Company’s loan risk rating classifications. Our regulators may require the Company to recognize rating downgrades based on their judgments related to information available to them at the time of their examinations.

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Foreclosed Assets Foreclosed Assets (Notes)

3 Months Ended

Mar. 31, 2015

Other Real Estate Owned Net Covered and NonCovered Including Foreclosed Assets [Abstract]

Other Real Estate Owned and Foreclosed Assets

Note 7.  Foreclosed Assets

The following table summarizes foreclosed assets at the dates indicated:

Property Type:	March 31, 2015		December 31, 2014
	(In thousands)
Commercial real estate	$	1,036	$	2,449
Construction and land development	18,942		24,759
Multi‑family	4,964		4,823
Single family residence	3,253		3,392
Total other real estate owned, net	28,195		35,423
Other foreclosed assets	7,745		8,298
Total foreclosed assets, net(1)	$	35,940	$	43,721

_________________________

(1) As of March 31, 2015 and December 31, 2014 , the amounts of covered foreclosed assets were $8.1 million and $9.3 million.

The following table presents the changes in foreclosed assets, net of the valuation allowance, for the period indicated:

	Foreclosed Assets
	(In thousands)
Balance, December 31, 2014	$	43,721
Foreclosures	394
Provision for losses	(124		)
Reductions related to sales	(8,051		)
Balance, March 31, 2015	$	35,940

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Borrowings

3 Months Ended

Mar. 31, 2015

Borrowings Subordinated Debentures And Brokered Deposits [Abstract]

Borrowings, Subordinated Debentures and Brokered Deposit

Note 9. Borrowings, Subordinated Debentures and Brokered Deposits

Borrowings

The following table summarizes our borrowings as of the dates indicated:

	March 31, 2015				December 31, 2014
	Amount		Rate		Amount		Rate
	(Dollars in thousands)
Non‑recourse debt	$	3,156	6.34	%	$	3,402	6.43	%
FHLB overnight advances	615,000		0.24	%	380,000		0.27	%
Total borrowings	$	618,156			$	383,402

The non‑recourse debt represents the payment stream of certain equipment leases sold to third parties. The debt is secured by the equipment in the leases and all interest rates are fixed. As of March 31, 2015, this debt had a weighted average remaining maturity of 2.5 years.

PacWest has an unsecured, variable-rate revolving line of credit in the amount of $75.0 million with an expiration date of September 30, 2015. This borrowing facility provides additional available liquidity to the Company. As of March 31, 2015 and December 31, 2014, there were no balances outstanding.

The Bank has established secured and unsecured lines of credit. We may borrow funds from time to time on a term or overnight basis from the FHLB, the Federal Reserve Bank of San Francisco (“FRBSF”), or other financial institutions.

FHLB Secured Lines of Credit. The borrowing arrangement with the FHLB is based on an FHLB program collateralized by a blanket lien on certain qualifying loans in our loan portfolio which are not pledged to the FRBSF. As of March 31, 2015, our borrowing capacity under the FHLB secured borrowing lines was $2.4 billion. As of March 31, 2015 and December 31, 2014, the balances outstanding were $615.0 million and $380.0 million.

FRBSF Secured Line of Credit. The Bank has a secured line of credit with the FRBSF. As of March 31, 2015, the Bank had secured borrowing capacity of $1.5 billion collateralized by liens covering $2.1 billion of certain qualifying loans. As of March 31, 2015 and December 31, 2014, there were no balances outstanding.

Federal Funds Arrangements with Commercial Banks. As of March 31, 2015, the Bank had unsecured lines of credit of $80.0 million with correspondent banks for the purchase of overnight funds, subject to availability of funds. These lines are renewable annually and have no unused commitment fees. As of March 31, 2015 and December 31, 2014, there were no balances outstanding.

Subordinated Debentures

The following table summarizes the terms of each issuance of subordinated debentures outstanding as of the dates indicated:

	March 31, 2015					December 31, 2014
											Date	Maturity	Rate Index
Series	Amount			Rate		Amount			Rate		Issued	Date	(Quarterly Reset)
	(Dollars in thousands)
Trust V	$	10,310		3.37	%	$	10,310		3.33	%	8/15/2003	9/17/2033	3 month LIBOR + 3.10
Trust VI	10,310			3.32	%	10,310			3.29	%	9/3/2003	9/15/2033	3 month LIBOR + 3.05
Trust CII	5,155			3.22	%	5,155			3.19	%	9/17/2003	9/17/2033	3 month LIBOR + 2.95
Trust VII	61,856			3.00	%	61,856			2.98	%	2/5/2004	4/23/2034	3 month LIBOR + 2.75
Trust CIII	20,619			1.96	%	20,619			1.93	%	8/15/2005	9/15/2035	3 month LIBOR + 1.69
Trust FCCI	16,495			1.87	%	16,495			1.84	%	1/25/2007	3/15/2037	3 month LIBOR + 1.60
Trust FCBI	10,310			1.82	%	10,310			1.79	%	9/30/2005	12/15/2035	3 month LIBOR + 1.55
Trust CS 2005-1 (1)	82,475			2.22	%	82,475			2.19	%	11/21/2005	12/15/2035	3 month LIBOR + 1.95
Trust CS 2005-2 (1)	128,866			2.20	%	128,866			2.18	%	12/14/2005	1/30/2036	3 month LIBOR + 1.95
Trust CS 2006-1 (1)	51,545			2.20	%	51,545			2.18	%	2/22/2006	4/30/2036	3 month LIBOR + 1.95
Trust CS 2006-2 (1)	51,550			2.20	%	51,550			2.18	%	9/27/2006	10/30/2036	3 month LIBOR + 1.95
Trust CS 2006-3 (1)(3)	27,651			2.10	%	31,188			2.14	%	9/29/2006	10/30/2036	3 month EURIBOR + 2.05
Trust CS 2006-4 (1)	16,470			2.20	%	16,470			2.18	%	12/5/2006	1/30/2037	3 month LIBOR + 1.95
Trust CS 2006-5 (1)	6,650			2.20	%	6,650			2.18	%	12/19/2006	1/30/2037	3 month LIBOR + 1.95
Trust CS 2007-2 (1)	39,177			2.20	%	39,177			2.18	%	6/13/2007	7/30/2037	3 month LIBOR + 1.95
Gross subordinated debentures	539,439					542,976
Unamortized discount (2)	(107,991		)			(109,393		)
Net subordinated debentures	$	431,448				$	433,583

___________________

(1) Acquired in the CapitalSource Inc. merger.

(2) Amount represents the fair value adjustment on trust preferred securities assumed in the CapitalSource Inc. and FCAL acquisitions.

(3) Denomination is in Euros with a value of €25.8 million.

Interest payments made by the Company on subordinated debentures are considered dividend payments under the Board of Governors of the Federal Reserve System (“FRB”) regulations. Bank holding companies, such as PacWest, are required to notify the FRB prior to declaring and paying a dividend to stockholders during any period in which quarterly and/or cumulative twelve‑month net earnings are insufficient to fund the dividend amount, among other requirements.

Brokered Time Deposits

Brokered time deposits totaled $814.9 million and $636.7 million at March 31, 2015 and December 31, 2014. During the first quarter of 2015, the Company added $178.2 million of brokered time deposits. Brokered time deposits under the Certificate of Deposit Account Registry Service Program ("CDARS Program") totaled $46.5 million and $44.0 million at March 31, 2015 and December 31, 2014. The CDARS Program represents deposits that are participated with other FDIC‑insured financial institutions as a means to provide FDIC deposit insurance coverage for the full amount of our customers’ deposits.

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Borrowings Borrowings (Details 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015		Dec. 31, 2014
Subordinated Borrowing [Line Items]
Subordinated debentures	$ 431,448		$ 433,583
Subordinated Debt Trust V Due September 2033 [Member]
Subordinated Borrowing [Line Items]
Long-term Debt, Gross	10,310		10,310
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	3.37%		3.33%
Debt Instrument Date Issued	Aug. 15, 2003
Debt Instrument, Maturity Date	Sep. 17, 2033
Debt Instrument, Basis Spread on Variable Rate	3 month LIBOR + 3.10
Subordinated Debt Trust VI Due September 2033 [Member]
Subordinated Borrowing [Line Items]
Long-term Debt, Gross	10,310		10,310
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	3.32%		3.29%
Debt Instrument Date Issued	Sep. 03, 2003
Debt Instrument, Maturity Date	Sep. 15, 2033
Debt Instrument, Basis Spread on Variable Rate	3 month LIBOR + 3.05
Subordinated Debt Trust CII Due September 2033 [Member]
Subordinated Borrowing [Line Items]
Long-term Debt, Gross	5,155		5,155
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	3.22%		3.19%
Debt Instrument Date Issued	Sep. 17, 2003
Debt Instrument, Maturity Date	Sep. 17, 2033
Debt Instrument, Basis Spread on Variable Rate	3 month LIBOR + 2.95
Subordinated Debt Trust VII Due April 2034 [Member]
Subordinated Borrowing [Line Items]
Long-term Debt, Gross	61,856		61,856
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	3.00%		2.98%
Debt Instrument Date Issued	Feb. 05, 2004
Debt Instrument, Maturity Date	Apr. 23, 2034
Debt Instrument, Basis Spread on Variable Rate	3 month LIBOR + 2.75
Subordinated Debt Trust CIII Due September 2035 [Member]
Subordinated Borrowing [Line Items]
Long-term Debt, Gross	20,619		20,619
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	1.96%		1.93%
Debt Instrument Date Issued	Aug. 15, 2005
Debt Instrument, Maturity Date	Sep. 15, 2035
Debt Instrument, Basis Spread on Variable Rate	3 month LIBOR + 1.69
Subordinated Debt Trust FCCI Due March 2037 [Member]
Subordinated Borrowing [Line Items]
Long-term Debt, Gross	16,495		16,495
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	1.87%		1.84%
Debt Instrument Date Issued	Jan. 25, 2007
Debt Instrument, Maturity Date	Mar. 15, 2037
Debt Instrument, Basis Spread on Variable Rate	3 month LIBOR + 1.60
Subordinated Debt Trust FCBI Due December 2035 [Member]
Subordinated Borrowing [Line Items]
Long-term Debt, Gross	10,310		10,310
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	1.82%		1.79%
Debt Instrument Date Issued	Sep. 30, 2005
Debt Instrument, Maturity Date	Dec. 15, 2035
Debt Instrument, Basis Spread on Variable Rate	3 month LIBOR + 1.55
Trust Preferred Securities Two Thousand Five Series One [Member]
Subordinated Borrowing [Line Items]
Long-term Debt, Gross	82,475		82,475
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	2.22%		2.19%
Debt Instrument Date Issued	Nov. 21, 2005
Debt Instrument, Maturity Date	Dec. 15, 2035
Debt Instrument, Basis Spread on Variable Rate	3 month LIBOR + 1.95
Trust Preferred Securities Two Thousand Five Series Two [Member]
Subordinated Borrowing [Line Items]
Long-term Debt, Gross	128,866		128,866
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	2.20%		2.18%
Debt Instrument Date Issued	Dec. 14, 2005
Debt Instrument, Maturity Date	Jan. 30, 2036
Debt Instrument, Basis Spread on Variable Rate	3 month LIBOR + 1.95
Two Thousand Six One Term Debt Securitization [Member]
Subordinated Borrowing [Line Items]
Long-term Debt, Gross	51,545		51,545
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	2.20%		2.18%
Debt Instrument Date Issued	Feb. 22, 2006
Debt Instrument, Maturity Date	Apr. 30, 2036
Debt Instrument, Basis Spread on Variable Rate	3 month LIBOR + 1.95
Two Thousand Six Two Term Debt Securitization [Member]
Subordinated Borrowing [Line Items]
Long-term Debt, Gross	51,550		51,550
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	2.20%		2.18%
Debt Instrument Date Issued	Sep. 27, 2006
Debt Instrument, Maturity Date	Oct. 30, 2036
Debt Instrument, Basis Spread on Variable Rate	3 month LIBOR + 1.95
Trust Preferred Securities Two Thousand Six Series Three [Member]
Subordinated Borrowing [Line Items]
Long-term Debt, Gross	27,651	[1]	31,188	[1]
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	2.10%		2.14%
Debt Instrument Date Issued	Sep. 29, 2006
Debt Instrument, Maturity Date	Oct. 30, 2036
Debt Instrument, Basis Spread on Variable Rate	3 month EURIBOR + 2.05
Trust Preferred Securities Two Thousand Six Series Four [Member]
Subordinated Borrowing [Line Items]
Long-term Debt, Gross	16,470		16,470
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	2.20%		2.18%
Debt Instrument Date Issued	Dec. 05, 2006
Debt Instrument, Maturity Date	Jan. 30, 2037
Debt Instrument, Basis Spread on Variable Rate	3 month LIBOR + 1.95
Trust Preferred Securities Two Thousand Six Series Five [Member]
Subordinated Borrowing [Line Items]
Long-term Debt, Gross	6,650		6,650
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	2.20%		2.18%
Debt Instrument Date Issued	Dec. 19, 2006
Debt Instrument, Maturity Date	Jan. 30, 2037
Debt Instrument, Basis Spread on Variable Rate	3 month LIBOR + 1.95
Two Thousand Seven One Term Debt Securitization [Member]
Subordinated Borrowing [Line Items]
Long-term Debt, Gross	39,177		39,177
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	2.20%		2.18%
Debt Instrument Date Issued	Jun. 13, 2007
Debt Instrument, Maturity Date	Jul. 30, 2037
Debt Instrument, Basis Spread on Variable Rate	3 month LIBOR + 1.95
Subordinated Debt [Member]
Subordinated Borrowing [Line Items]
Long-term Debt, Gross	539,439		542,976
Debt Instrument, Unamortized Discount	(107,991)		(109,393)
Subordinated debentures	$ 431,448		$ 433,583

[1] (3) Denomination is in Euros with a value of €25.8 million.

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Commitments and Contingencies Commitments and Contingencies (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]
Loans and Leases Receivable Commitments	$ 2,122,749	$ 1,921,067
Guarantor Obligations, Maximum Exposure, Undiscounted	97,540	88,495
Loans and Leases Receivable, Commitments to Purchase or Sell	23,535	12,839
Fair Value Disclosure, Off-balance Sheet Risks, Amount, Liability	$ 2,243,824	$ 2,022,401

XML

Borrowings (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Borrowings	$ 618,156,000	$ 383,402,000
Notes Payable, Other Payables [Member]
Debt Instrument [Line Items]
Non-Recourse Debt	3,156,000	3,402,000
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	6.34%	0.00%
Federal Home Loan Bank Advances [Member]
Debt Instrument [Line Items]
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	0.24%	0.00%
Line of Credit Facility, Amount Outstanding	$ 615,000,000	$ 380,000,000

XML

Business Segment (Tables)

3 Months Ended

Mar. 31, 2015

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, by Segment [Table Text Block]

The following tables present information regarding our business segments as of and for the periods indicated:

	March 31, 2015
	Community			National						Consolidated
Balance Sheet Data:	Banking			Lending			Other			Company
	(In thousands)
Loans and leases, net of deferred fees	$	3,349,928		$	8,898,843		$	23,395		$	12,272,166
Allowance for loan and lease losses	(40,906		)	(51,472		)	—			(92,378		)
Total loans and leases, net	$	3,309,022		$	8,847,371		$	23,395		$	12,179,788
Goodwill(1)	$	333,979		$	1,394,401		$	—		$	1,728,380
Core deposit and customer relationship intangibles, net	14,918			785			—			15,703
Total assets	6,553,028			9,905,563			185,349			16,643,940
Total deposits(2)	12,252,851			35,847			(354,523		)	11,934,175

________________________

(1) The increase in goodwill for the Community Banking segment and National Lending segment compared to March 31, 2014, was due primarily to $1.5 billion from the CapitalSource Inc. merger.

(2) The negative balance for total deposits in the “Other” segment represents the elimination of holding company cash held in deposit accounts at the Bank.

	March 31, 2014
	Community			National						Consolidated
Balance Sheet Data:	Banking			Lending			Other			Company
	(In thousands)
Loans and leases, net of deferred fees	$	3,707,308		$	453,759		$	—		$	4,161,067
Allowance for loan and lease losses	(74,833		)	(6,347		)	—			(81,180		)
Total loans and leases, net	$	3,632,475		$	447,412		$	—		$	4,079,887
Goodwill	$	183,065		$	25,678		$	—		$	208,743
Core deposit and customer relationship intangibles, net	14,139			1,745			—			15,884
Total assets	5,990,162			517,126			10,565			6,517,853
Total deposits(1)	5,415,691			—			(46,283		)	5,369,408

________________________

(1) The negative balance for total deposits in the “Other” segment represents the elimination of holding company cash held in deposit accounts at the Bank.

Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table Text Block]

	Three Months Ended March 31, 2015
	Community			National						Consolidated
Results of Operations:	Banking			Lending			Other			Company
	(In thousands)
Interest income	$	62,956		$	151,219		$	139		$	214,314
Interest expense	(10,661		)	(53		)	(4,525		)	(15,239		)
Intersegment interest income (expense)	6,721			(6,721		)	—			—
Net interest income (expense)	59,016			144,445			(4,386		)	199,075
Negative provision (provision) for credit losses	8,064			(24,406		)	(92		)	(16,434		)
Gain on securities	3,275			—			—			3,275
FDIC loss sharing expense	(4,399		)	—			—			(4,399		)
Other noninterest income	9,575			5,142			7,278			21,995
Total noninterest income	8,451			5,142			7,278			20,871
Foreclosed assets (expense) income, net	(44		)	(61		)	(231		)	(336		)
Intangible asset amortization	(1,389		)	(112		)	—			(1,501		)
Acquisition, integration and reorganization costs	(1,890		)	—			(110		)	(2,000		)
Other noninterest expense	(55,205		)	(22,837		)	(2,481		)	(80,523		)
Total noninterest expense	(58,528		)	(23,010		)	(2,822		)	(84,360		)
Intersegment noninterest income (expense)	26,563			(26,563		)	—			—
Total noninterest expense - adjusted	(31,965		)	(49,573		)	(2,822		)	(84,360		)
Earnings (loss) before taxes	43,566			75,608			(22		)	119,152
Income tax (expense) benefit	(16,873		)	(29,282		)	82			(46,073		)
Net earnings (loss)	$	26,693		$	46,326		$	60		$	73,079

	Three Months Ended December 31, 2014
	Community			National						Consolidated
Results of Operations:	Banking			Lending			Other			Company
	(In thousands)
Interest income	$	64,967		$	144,546		$	183		$	209,696
Interest expense	(10,069		)	(46		)	(4,598		)	(14,713		)
Intersegment interest income (expense)	6,173			(6,173		)	—			—
Net interest income (expense)	61,071			138,327			(4,415		)	194,983
Negative provision (provision) for credit losses	9,753			(11,816		)	—			(2,063		)
FDIC loss sharing expense	(4,360		)	—			—			(4,360		)
Other noninterest income	7,025			7,330			2,708			17,063
Total noninterest (expense) income	2,665			7,330			2,708			12,703
Foreclosed assets expense, net	(2,286		)	(18		)	366			(1,938		)
Intangible asset amortization	(1,507		)	(112		)	—			(1,619		)
Acquisition, integration and reorganization costs	(7,381		)	—			—			(7,381		)
Other noninterest expense	(51,605		)	(24,526		)	(4,236		)	(80,367		)
Total noninterest expense	(62,779		)	(24,656		)	(3,870		)	(91,305		)
Intersegment noninterest income (expense)	21,953			(21,953		)	—			—
Total noninterest expense - adjusted	(40,826		)	(46,609		)	(3,870		)	(91,305		)
Earnings (loss) from continuing operations before taxes	32,663			87,232			(5,577		)	114,318
Income tax (expense) benefit	(13,651		)	(34,781		)	5,171			(43,261		)
Net earnings (loss) from continuing operations	19,012			52,451			(406		)	71,057
Loss from discontinued operations before taxes	(105		)	—			—			(105		)
Income tax benefit	47			—			—			47
Net loss from discontinued operations	(58		)	—			—			(58		)
Net earnings (loss)	$	18,954		$	52,451		$	(406	)	$	70,999

	Three Months Ended March 31, 2014
	Community			National						Consolidated
Results of Operations:	Banking			Lending			Other			Company
	(In thousands)
Interest income	$	77,595		$	10,765		$	—		$	88,360
Interest Expense	(1,227		)	(77		)	(1,041		)	(2,345		)
Intersegment interest income (expense)	222			(222		)	—			—
Net interest income (expense)	76,590			10,466			(1,041		)	86,015
Negative provision (provision) for credit losses	826			(182		)	—			644
Gain on securities	4,752			—			—			4,752
FDIC loss sharing expense, net	(11,430		)	—			—			(11,430		)
Other noninterest income	6,897			4,445			27			11,369
Total noninterest income	219			4,445			27			4,691
Foreclosed assets expense, net	1,861			—			—			1,861
Intangible asset amortization	(1,191		)	(173		)	—			(1,364		)
Acquisition, integration and reorganization costs	(2,200		)	—			—			(2,200		)
Other noninterest expense	(40,285		)	(6,573		)	(1,603		)	(48,461		)
Total noninterest expense	(41,815		)	(6,746		)	(1,603		)	(50,164		)
Earnings (loss) from continuing operations before taxes	35,820			7,983			(2,617		)	41,186
Income tax (expense) benefit	(13,039		)	(3,331		)	1,089			(15,281		)
Net earnings (loss) from continuing operations	22,781			4,652			(1,528		)	25,905
Loss from discontinued operations before taxes	(1,413		)	—			—			(1,413		)
Income tax benefit	588			—			—			588
Net loss from discontinued operations	(825		)	—			—			(825		)
Net earnings (loss)	$	21,956		$	4,652		$	(1,528	)	$	25,080

XML

Loans and Credit Quality (Details 4) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	$ 12,272,166	$ 11,882,432	$ 4,161,067
Non-PCI nonaccrual loans	139,334	83,621
NonCovered [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	12,017,881	11,591,641	3,828,551
Financing Receivable, Recorded Investment, Nonaccrual Status	139,334	83,621
Non-PCI nonaccrual loans		11,591,641
NonCovered [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	93,675	101,483	66,782
Financing Receivable, Recorded Investment, Nonaccrual Status	3,474	3,485
NonCovered [Member] | Mortgage Loans on Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	5,588,430	5,340,560	2,320,554
Financing Receivable, Recorded Investment, Nonaccrual Status	37,335	37,612
NonCovered [Member] | Real Estate Construction [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	328,709	307,135	240,073
Financing Receivable, Recorded Investment, Nonaccrual Status	832	1,559
NonCovered [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	6,007,067	5,842,463	1,201,142
Financing Receivable, Recorded Investment, Nonaccrual Status	97,693	40,965
Nonperforming Financing Receivable [Member] | NonCovered [Member] | Hospitality [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	8,088	6,366
Nonperforming Financing Receivable [Member] | NonCovered [Member] | SBA Loans [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	10,919	11,141
Nonperforming Financing Receivable [Member] | NonCovered [Member] | Real Estate Other Class [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	18,328	20,105
Nonperforming Financing Receivable [Member] | NonCovered [Member] | Residential Real Estate Construction Financing Receivable [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	379	381
Nonperforming Financing Receivable [Member] | NonCovered [Member] | Commercial Real Estate Construction Financing Receivable [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	453	1,178
Nonperforming Financing Receivable [Member] | NonCovered [Member] | Collateralized Loan Obligations [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	3,601	5,450
Nonperforming Financing Receivable [Member] | NonCovered [Member] | Unsecured Commercial Member [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	594	639
Nonperforming Financing Receivable [Member] | NonCovered [Member] | Asset Based [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	4,159	4,574
Nonperforming Financing Receivable [Member] | NonCovered [Member] | Cash Flow [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	15,172	15,964
Nonperforming Financing Receivable [Member] | NonCovered [Member] | Equipment Finance Commercial Financing Receivable [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	71,039	11,131
Nonperforming Financing Receivable [Member] | NonCovered [Member] | SBA Financing Receivable [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	3,128	3,207
Nonperforming Financing Receivable [Member] | NonCovered [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income		3,485
Nonperforming Financing Receivable [Member] | NonCovered [Member] | Mortgage Loans on Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income		37,612
Nonperforming Financing Receivable [Member] | NonCovered [Member] | Real Estate Construction [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income		1,559
Nonperforming Financing Receivable [Member] | NonCovered [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income		40,965
Performing Financing Receivable [Member] | NonCovered [Member]
Financing Receivable, Impaired [Line Items]
Non-PCI nonaccrual loans	11,878,547	11,508,020
Performing Financing Receivable [Member] | NonCovered [Member] | Hospitality [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	604,001	553,853
Performing Financing Receivable [Member] | NonCovered [Member] | SBA Loans [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	377,857	364,786
Performing Financing Receivable [Member] | NonCovered [Member] | Real Estate Other Class [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	4,569,237	4,384,309
Performing Financing Receivable [Member] | NonCovered [Member] | Residential Real Estate Construction Financing Receivable [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	121,937	96,347
Performing Financing Receivable [Member] | NonCovered [Member] | Commercial Real Estate Construction Financing Receivable [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	205,940	209,229
Performing Financing Receivable [Member] | NonCovered [Member] | Collateralized Loan Obligations [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	390,787	433,737
Performing Financing Receivable [Member] | NonCovered [Member] | Unsecured Commercial Member [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	142,720	131,185
Performing Financing Receivable [Member] | NonCovered [Member] | Asset Based [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	1,715,618	1,790,277
Performing Financing Receivable [Member] | NonCovered [Member] | Cash Flow [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	2,778,012	2,443,887
Performing Financing Receivable [Member] | NonCovered [Member] | Equipment Finance Commercial Financing Receivable [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	842,977	958,358
Performing Financing Receivable [Member] | NonCovered [Member] | SBA Financing Receivable [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	39,260	44,054
Performing Financing Receivable [Member] | NonCovered [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	90,201	97,998
Performing Financing Receivable [Member] | NonCovered [Member] | Mortgage Loans on Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	5,551,095	5,302,948
Performing Financing Receivable [Member] | NonCovered [Member] | Real Estate Construction [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	327,877	305,576
Performing Financing Receivable [Member] | NonCovered [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	5,909,374	5,801,498
Collateralized Loan Obligations [Member] | NonCovered [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	394,388	439,187
Unsecured Commercial Member [Member] | NonCovered [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	143,314	131,824
Asset Based [Member] | NonCovered [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	1,719,777	1,794,851
Cash Flow [Member] | NonCovered [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	2,793,184	2,459,851
Equipment Finance Commercial Financing Receivable [Member] | NonCovered [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	914,016	969,489
SBA Financing Receivable [Member] | NonCovered [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	42,388	47,261
Residential Real Estate Construction Financing Receivable [Member] | NonCovered [Member] | Real Estate Construction [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	122,316	96,728
Commercial Real Estate Construction Financing Receivable [Member] | NonCovered [Member] | Real Estate Construction [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	206,393	210,407
Hospitality [Member] | NonCovered [Member] | Mortgage Loans on Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	612,089	560,219
SBA Loans [Member] | NonCovered [Member] | Mortgage Loans on Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	388,776	375,927
Real Estate Other Class [Member] | NonCovered [Member] | Mortgage Loans on Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	$ 4,587,565	$ 4,404,414

XML

Business Segment

3 Months Ended

Mar. 31, 2015

Segment Reporting [Abstract]

Segment Data

Note 14. Business Segments

The Company’s reportable segments consist of “Community Banking," “National Lending,” and “Other.” The Community Banking and National Lending segments include all of the operations of Pacific Western Bank. The Other segment consists of holding company and non-bank subsidiary operations, and intercompany eliminations.

As a result of the CapitalSource Inc. merger, the Bank established the CapitalSource Division, which we also refer to as the National Lending segment. The National Lending segment includes the lending operations gained through the CapitalSource Inc. merger, Pacific Western Equipment Finance, and the CapitalSource Business Finance Group (formerly BFI Business Finance and First Community Financial). We reorganized our asset-based lending and leasing operations when we established the CapitalSource Division.

The CapitalSource Division lends throughout the United States, providing middle-market businesses asset-secured loans, equipment-secured loans, and cash flow loans and providing real estate investment firms real estate loans secured by various property types. The CapitalSource Division’s loan and lease origination efforts are conducted through offices located in Chevy Chase, Maryland; Los Angeles and San Jose, California; Phoenix, Arizona; St. Louis, Missouri; Denver, Colorado; Chicago, Illinois; New York, New York; and Midvale, Utah.

The Community Banking segment includes the operations of Pacific Western Bank, excluding the CapitalSource Division, and includes lending and deposit gathering activities conducted primarily through its California-based branch offices and the Bank’s treasury management function and corporate overhead.

The Other segment consists of holding company operations which result in expenses principally for compensation, facilities, professional services, interest on subordinated debentures, and the non-bank subsidiary operations including interest income from a loan portfolio and related loan servicing expense.

The accounting policies of the reported segments are the same as those of the Company described in Note 1, "Nature of Operations and Summary of Significant Accounting Policies," of our Form 10-K. Transactions between segments consist primarily of borrowed funds and expense allocations for interest, deposit gathering, corporate overhead and credit loss provisions. Intersegment interest expense is allocated from the Community Banking segment to the National Lending segment based upon National Lending’s average earning assets, net of a capital allocation, and the Bank’s total cost of deposits. The Community Banking segment further allocates to the National Lending segment noninterest expense for deposit gathering and maintenance costs and the Bank’s corporate overhead. The provision for credit losses is allocated based on actual charge‑offs for the period as well as net portfolio growth and credit quality trends. All costs associated with investing the Bank’s excess liquidity and acquisition, integration and reorganization costs are housed in the Community Banking segment. Noninterest income and noninterest expense, including lending and loan servicing activity, directly attributable to a segment are assigned to such segment.

The following tables present information regarding our business segments as of and for the periods indicated:

	March 31, 2015
	Community			National						Consolidated
Balance Sheet Data:	Banking			Lending			Other			Company
	(In thousands)
Loans and leases, net of deferred fees	$	3,349,928		$	8,898,843		$	23,395		$	12,272,166
Allowance for loan and lease losses	(40,906		)	(51,472		)	—			(92,378		)
Total loans and leases, net	$	3,309,022		$	8,847,371		$	23,395		$	12,179,788
Goodwill(1)	$	333,979		$	1,394,401		$	—		$	1,728,380
Core deposit and customer relationship intangibles, net	14,918			785			—			15,703
Total assets	6,553,028			9,905,563			185,349			16,643,940
Total deposits(2)	12,252,851			35,847			(354,523		)	11,934,175

________________________

(1) The increase in goodwill for the Community Banking segment and National Lending segment compared to March 31, 2014, was due primarily to $1.5 billion from the CapitalSource Inc. merger.

(2) The negative balance for total deposits in the “Other” segment represents the elimination of holding company cash held in deposit accounts at the Bank.

	March 31, 2014
	Community			National						Consolidated
Balance Sheet Data:	Banking			Lending			Other			Company
	(In thousands)
Loans and leases, net of deferred fees	$	3,707,308		$	453,759		$	—		$	4,161,067
Allowance for loan and lease losses	(74,833		)	(6,347		)	—			(81,180		)
Total loans and leases, net	$	3,632,475		$	447,412		$	—		$	4,079,887
Goodwill	$	183,065		$	25,678		$	—		$	208,743
Core deposit and customer relationship intangibles, net	14,139			1,745			—			15,884
Total assets	5,990,162			517,126			10,565			6,517,853
Total deposits(1)	5,415,691			—			(46,283		)	5,369,408

________________________

(1) The negative balance for total deposits in the “Other” segment represents the elimination of holding company cash held in deposit accounts at the Bank.

	Three Months Ended March 31, 2015
	Community			National						Consolidated
Results of Operations:	Banking			Lending			Other			Company
	(In thousands)
Interest income	$	62,956		$	151,219		$	139		$	214,314
Interest expense	(10,661		)	(53		)	(4,525		)	(15,239		)
Intersegment interest income (expense)	6,721			(6,721		)	—			—
Net interest income (expense)	59,016			144,445			(4,386		)	199,075
Negative provision (provision) for credit losses	8,064			(24,406		)	(92		)	(16,434		)
Gain on securities	3,275			—			—			3,275
FDIC loss sharing expense	(4,399		)	—			—			(4,399		)
Other noninterest income	9,575			5,142			7,278			21,995
Total noninterest income	8,451			5,142			7,278			20,871
Foreclosed assets (expense) income, net	(44		)	(61		)	(231		)	(336		)
Intangible asset amortization	(1,389		)	(112		)	—			(1,501		)
Acquisition, integration and reorganization costs	(1,890		)	—			(110		)	(2,000		)
Other noninterest expense	(55,205		)	(22,837		)	(2,481		)	(80,523		)
Total noninterest expense	(58,528		)	(23,010		)	(2,822		)	(84,360		)
Intersegment noninterest income (expense)	26,563			(26,563		)	—			—
Total noninterest expense - adjusted	(31,965		)	(49,573		)	(2,822		)	(84,360		)
Earnings (loss) before taxes	43,566			75,608			(22		)	119,152
Income tax (expense) benefit	(16,873		)	(29,282		)	82			(46,073		)
Net earnings (loss)	$	26,693		$	46,326		$	60		$	73,079

	Three Months Ended December 31, 2014
	Community			National						Consolidated
Results of Operations:	Banking			Lending			Other			Company
	(In thousands)
Interest income	$	64,967		$	144,546		$	183		$	209,696
Interest expense	(10,069		)	(46		)	(4,598		)	(14,713		)
Intersegment interest income (expense)	6,173			(6,173		)	—			—
Net interest income (expense)	61,071			138,327			(4,415		)	194,983
Negative provision (provision) for credit losses	9,753			(11,816		)	—			(2,063		)
FDIC loss sharing expense	(4,360		)	—			—			(4,360		)
Other noninterest income	7,025			7,330			2,708			17,063
Total noninterest (expense) income	2,665			7,330			2,708			12,703
Foreclosed assets expense, net	(2,286		)	(18		)	366			(1,938		)
Intangible asset amortization	(1,507		)	(112		)	—			(1,619		)
Acquisition, integration and reorganization costs	(7,381		)	—			—			(7,381		)
Other noninterest expense	(51,605		)	(24,526		)	(4,236		)	(80,367		)
Total noninterest expense	(62,779		)	(24,656		)	(3,870		)	(91,305		)
Intersegment noninterest income (expense)	21,953			(21,953		)	—			—
Total noninterest expense - adjusted	(40,826		)	(46,609		)	(3,870		)	(91,305		)
Earnings (loss) from continuing operations before taxes	32,663			87,232			(5,577		)	114,318
Income tax (expense) benefit	(13,651		)	(34,781		)	5,171			(43,261		)
Net earnings (loss) from continuing operations	19,012			52,451			(406		)	71,057
Loss from discontinued operations before taxes	(105		)	—			—			(105		)
Income tax benefit	47			—			—			47
Net loss from discontinued operations	(58		)	—			—			(58		)
Net earnings (loss)	$	18,954		$	52,451		$	(406	)	$	70,999

	Three Months Ended March 31, 2014
	Community			National						Consolidated
Results of Operations:	Banking			Lending			Other			Company
	(In thousands)
Interest income	$	77,595		$	10,765		$	—		$	88,360
Interest Expense	(1,227		)	(77		)	(1,041		)	(2,345		)
Intersegment interest income (expense)	222			(222		)	—			—
Net interest income (expense)	76,590			10,466			(1,041		)	86,015
Negative provision (provision) for credit losses	826			(182		)	—			644
Gain on securities	4,752			—			—			4,752
FDIC loss sharing expense, net	(11,430		)	—			—			(11,430		)
Other noninterest income	6,897			4,445			27			11,369
Total noninterest income	219			4,445			27			4,691
Foreclosed assets expense, net	1,861			—			—			1,861
Intangible asset amortization	(1,191		)	(173		)	—			(1,364		)
Acquisition, integration and reorganization costs	(2,200		)	—			—			(2,200		)
Other noninterest expense	(40,285		)	(6,573		)	(1,603		)	(48,461		)
Total noninterest expense	(41,815		)	(6,746		)	(1,603		)	(50,164		)
Earnings (loss) from continuing operations before taxes	35,820			7,983			(2,617		)	41,186
Income tax (expense) benefit	(13,039		)	(3,331		)	1,089			(15,281		)
Net earnings (loss) from continuing operations	22,781			4,652			(1,528		)	25,905
Loss from discontinued operations before taxes	(1,413		)	—			—			(1,413		)
Income tax benefit	588			—			—			588
Net loss from discontinued operations	(825		)	—			—			(825		)
Net earnings (loss)	$	21,956		$	4,652		$	(1,528	)	$	25,080

XML

Investments (Tables)

3 Months Ended

Mar. 31, 2015

Investments, Debt and Equity Securities [Abstract]

Schedule of Available-for-sale Securities Reconciliation

The following table presents amortized cost, gross unrealized gains and losses, and carrying values of securities available-for-sale as of the dates indicated:

	March 31, 2015									December 31, 2014
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value		Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	(In thousands)
Residential mortgage-backed securities:
Government agency and
government-sponsored enterprise
pass-through securities	$	439,696	$	19,327	$	(131	)	$	458,892	$	515,902	$	20,142	$	(372	)	$	535,672
Government agency and
government-sponsored enterprise
collateralized mortgage obligations	269,766		6,909		(451		)	276,224		275,513		3,513		(1,080		)	277,946
Covered private label collateralized
mortgage obligations	26,496		7,014		(66		)	33,444		26,889		7,153		(95		)	33,947
Other private label collateralized
mortgage obligations	9,645		52		(47		)	9,650		10,961		46		(93		)	10,914
Municipal securities	579,344		15,708		(2,199		)	592,853		521,499		15,899		(1,282		)	536,116
Corporate debt securities	47,485		683		(423		)	47,745		110,074		597		(562		)	110,109
Collateralized loan obligations	112,883		922		—			113,805		—		—		—			—
Government-sponsored enterprise debt
securities	36,249		1,156		—			37,405		36,232		525		—			36,757
Other securities	25,451		34		(94		)	25,391		25,801		33		(118		)	25,716
Total	$	1,547,015	$	51,805	$	(3,411	)	$	1,595,409	$	1,522,871	$	47,908	$	(3,602	)	$	1,567,177

Unrealized losses on investment securities

Losses on Securities Available-for-Sale

The following tables present the gross unrealized losses and fair values of securities available-for-sale that were in unrealized loss positions, for which other-than-temporary impairments have not been recognized in earnings, as of the dates indicated:

	March 31, 2015
	Less Than 12 Months					12 Months or More					Total
	Fair Value		Gross Unrealized Losses			Fair Value		Gross Unrealized Losses			Fair Value		Gross Unrealized Losses
	(In thousands)
Residential mortgage-backed securities:
Government agency and government-
sponsored enterprise pass-through
securities	$	5,031	$	(42	)	$	10,085	$	(89	)	$	15,116	$	(131	)
Government agency and government-
sponsored enterprise collateralized
mortgage obligations	—		—			14,403		(451		)	14,403		(451		)
Covered private label collateralized
mortgage obligations	726		(6		)	643		(60		)	1,369		(66		)
Other private label collateralized
mortgage obligations	1,206		(46		)	360		(1		)	1,566		(47		)
Municipal securities	112,361		(1,277		)	38,687		(922		)	151,048		(2,199		)
Corporate debt securities	25,104		(423		)	—		—			25,104		(423		)
Other securities	6,453		(72		)	10,020		(22		)	16,473		(94		)
Total	$	150,881	$	(1,866	)	$	74,198	$	(1,545	)	$	225,079	$	(3,411	)

	December 31, 2014
	Less Than 12 Months					12 Months or More					Total
	Fair Value		Gross Unrealized Losses			Fair Value		Gross Unrealized Losses			Fair Value		Gross Unrealized Losses
	(In thousands)
Residential mortgage-backed securities:
Government agency and government-
sponsored enterprise pass-through
securities	$	10,711	$	(13	)	$	27,100	$	(359	)	$	37,811	$	(372	)
Government agency and government-
sponsored enterprise collateralized
mortgage obligations	23,908		(73		)	40,652		(1,007		)	64,560		(1,080		)
Covered private label collateralized
mortgage obligations	—		—			1,000		(95		)	1,000		(95		)
Other private label collateralized
mortgage obligations	1,618		(93		)	—		—			1,618		(93		)
Municipal securities	11,854		(66		)	84,822		(1,216		)	96,676		(1,282		)
Corporate debt securities	52,071		(547		)	10,131		(15		)	62,202		(562		)
Other securities	6,440		(90		)	10,019		(28		)	16,459		(118		)
Total	$	106,602	$	(882	)	$	173,724	$	(2,720	)	$	280,326	$	(3,602	)

Investments Classified by Contractual Maturity Date

The following table presents the contractual maturities of our available-for-sale securities portfolio based on amortized cost and carrying value as of the date indicated:

	March 31, 2015
	Amortized Cost		Estimated Fair Value
	(In thousands)
Due in one year or less	$	18,358	$	18,538
Due after one year through five years	76,173		76,515
Due after five years through ten years	276,933		287,023
Due after ten years	1,175,551		1,213,333
Total securities available-for-sale	$	1,547,015	$	1,595,409

Investment Income

The following table presents the composition of our interest income on investment securities for the periods indicated:

	Three Months Ended
	March 31, 2015		December 31, 2014		March 31, 2014
	(In thousands)
Taxable interest	$	7,473	$	7,697	$	6,920
Non-taxable interest	3,894		3,593		3,328
Dividend income	828		915		575
Total interest income on investment securities	$	12,195	$	12,205	$	10,823

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Loans and Credit Quality (Details 2) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	$ 12,272,166	$ 11,882,432	$ 4,161,067
NonCovered [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	12,017,881	11,591,641	3,828,551
NonCovered [Member] | Mortgage Loans on Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	5,588,430	5,340,560	2,320,554
NonCovered [Member] | Real Estate Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	328,709	307,135	240,073
NonCovered [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	6,007,067	5,842,463	1,201,142
NonCovered [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	93,675	101,483	66,782
NonCovered [Member] | Nonclassified [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	333,182	242,611
NonCovered [Member] | Nonclassified [Member] | Hospitality [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	16,928	17,761
NonCovered [Member] | Nonclassified [Member] | SBA Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	10,919	11,141
NonCovered [Member] | Nonclassified [Member] | Real Estate Other Class [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	69,859	68,084
NonCovered [Member] | Nonclassified [Member] | Mortgage Loans on Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	97,706	96,986
NonCovered [Member] | Nonclassified [Member] | Residential Real Estate Construction Financing Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	398	402
NonCovered [Member] | Nonclassified [Member] | Commercial Real Estate Construction Financing Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	1,456	3,346
NonCovered [Member] | Nonclassified [Member] | Real Estate Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	1,854	3,748
NonCovered [Member] | Nonclassified [Member] | Collateralized Loan Obligations [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	21,265	22,433
NonCovered [Member] | Nonclassified [Member] | Unsecured Commercial Member [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	1,267	1,323
NonCovered [Member] | Nonclassified [Member] | Asset Based [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	11,304	11,547
NonCovered [Member] | Nonclassified [Member] | Cash Flow [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	105,763	83,321
NonCovered [Member] | Nonclassified [Member] | Equipment Finance Commercial Financing Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	86,938	15,973
NonCovered [Member] | Nonclassified [Member] | SBA Financing Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	3,128	3,207
NonCovered [Member] | Nonclassified [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	229,665	137,804
NonCovered [Member] | Nonclassified [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	3,957	4,073
NonCovered [Member] | Classified [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	11,684,699	11,349,030
NonCovered [Member] | Classified [Member] | Hospitality [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	595,161	542,458
NonCovered [Member] | Classified [Member] | SBA Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	377,857	364,786
NonCovered [Member] | Classified [Member] | Real Estate Other Class [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	4,517,706	4,336,330
NonCovered [Member] | Classified [Member] | Mortgage Loans on Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	5,490,724	5,243,574
NonCovered [Member] | Classified [Member] | Residential Real Estate Construction Financing Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	121,918	96,326
NonCovered [Member] | Classified [Member] | Commercial Real Estate Construction Financing Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	204,937	207,061
NonCovered [Member] | Classified [Member] | Real Estate Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	326,855	303,387
NonCovered [Member] | Classified [Member] | Collateralized Loan Obligations [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	373,123	416,754
NonCovered [Member] | Classified [Member] | Unsecured Commercial Member [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	142,047	130,501
NonCovered [Member] | Classified [Member] | Asset Based [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	1,708,473	1,783,304
NonCovered [Member] | Classified [Member] | Cash Flow [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	2,687,421	2,376,530
NonCovered [Member] | Classified [Member] | Equipment Finance Commercial Financing Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	827,078	953,516
NonCovered [Member] | Classified [Member] | SBA Financing Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	39,260	44,054
NonCovered [Member] | Classified [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	5,777,402	5,704,659
NonCovered [Member] | Classified [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	89,718	97,410
Collateralized Loan Obligations [Member] | NonCovered [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	394,388	439,187
Unsecured Commercial Member [Member] | NonCovered [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	143,314	131,824
Asset Based [Member] | NonCovered [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	1,719,777	1,794,851
Cash Flow [Member] | NonCovered [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	2,793,184	2,459,851
Equipment Finance Commercial Financing Receivable [Member] | NonCovered [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	914,016	969,489
SBA Financing Receivable [Member] | NonCovered [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	42,388	47,261
Residential Real Estate Construction Financing Receivable [Member] | NonCovered [Member] | Real Estate Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	122,316	96,728
Commercial Real Estate Construction Financing Receivable [Member] | NonCovered [Member] | Real Estate Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	206,393	210,407
Hospitality [Member] | NonCovered [Member] | Mortgage Loans on Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	612,089	560,219
SBA Loans [Member] | NonCovered [Member] | Mortgage Loans on Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	388,776	375,927
Real Estate Other Class [Member] | NonCovered [Member] | Mortgage Loans on Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	$ 4,587,565	$ 4,404,414

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Goodwill and Other Intangible Assets Goodwill and Other Intangible Assets (Details Textual) (USD $)	3 Months Ended			12 Months Ended
	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014	Dec. 31, 2015
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	4 years 3 months 20 days
Intangible asset amortization	$ 1,501,000	$ 1,619,000	$ 1,364,000
Aggregate Amortization Expense 2016	4,100,000
Aggregate Amortization Expense 2017	2,300,000
Aggregate Amortization Expense 2018	2,000,000
Aggregate Amortization Expense 2019	1,700,000
Aggregate Amortization Expense 2020	953,000
Scenario, Forecast [Member]
Intangible asset amortization				$ 6,000,000

XML

Consolidated Statement of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014
Net earnings	$ 73,079	$ 70,999	$ 25,080
Unrealized holding gains on securities available-for-sale	7,363	9,523	22,291
Income tax expense related to unrealized holding gains arising during the period	(3,105)	(3,964)	(9,363)
Unrealized holding gains on securities available-for-sale, net of tax	4,258	5,559	12,928
Reclassification adjustment for gains included in net earnings (1)	(3,275)	0	(4,752)
Income tax expense related to reclassification adjustment	1,381	0	1,996
Reclassification adjustment for gains included in net earnings, net of tax	(1,894)	0	(2,756)
Other comprehensive income, net of tax	2,364	5,559	10,172
Comprehensive income	$ 75,443	$ 76,558	$ 35,252

XML

Acquisitions Acquisitions Notes

3 Months Ended

Mar. 31, 2015

Business Combinations [Abstract]

Acquisitions

Note 3.  Acquisitions    

The following assets acquired and liabilities assumed of CapitalSource Inc. are presented at estimated fair value as of its acquisition date:

	Acquisition and Date Acquired
	CapitalSource Inc.
	April 7, 2014
	(In thousands)
Assets Acquired:
Cash and due from banks	$	768,553
Interest‑earning deposits in financial institutions	60,612
Investment securities available‑for‑sale	382,797
FHLB stock	46,060
Loans and leases	6,877,427
Equipment leased to others under operating leases	160,015
Premises and equipment	12,663
Foreclosed assets	6,382
Income tax assets	304,856
Goodwill	1,526,282
Core deposit and customer relationship intangibles	6,720
Other assets(1)	582,985
Total assets acquired	$	10,735,352
Liabilities Assumed:
Noninterest‑bearing deposits	$	4,631
Interest‑bearing deposits	6,236,419
Other borrowings	992,109
Subordinated debentures	300,918
Accrued interest payable and other liabilities	124,087
Total liabilities assumed	$	7,658,164
Total consideration paid	$	3,077,188
Summary of consideration:
Cash paid	$	483,118
PacWest common stock issued	2,594,070
Total	$	3,077,188

___________________

(1) Includes a $484 million receivable for securities sales proceeds.

CapitalSource Inc. Merger

We acquired CapitalSource Inc. on April 7, 2014. As part of the merger, CapitalSource Bank (“CSB”), a wholly owned subsidiary of CapitalSource Inc., merged with and into Pacific Western Bank. We completed the merger in order to augment our loan and lease generation capabilities and to diversify our loan portfolio.

At closing, we created the CapitalSource Division of the Bank. The CapitalSource Division provides a full spectrum of financing solutions across numerous industries and property types to middle market businesses nationwide. When we refer to "CapitalSource Inc." we are referring to the company acquired on April 7, 2014 and when we refer to the "CapitalSource Division" we are referring to a division of the Bank that lends throughout the United States, providing middle-market businesses asset-secured loans, equipment-secured loans and leases, and cash flow loans and providing real estate loans secured by various property types.

The CapitalSource Inc. merger has been accounted for under the acquisition method of accounting. The assets and liabilities, both tangible and intangible, were recorded at their estimated fair values as of the merger date. We made significant estimates and exercised significant judgment in estimating fair values and accounting for such acquired assets and liabilities. The application of the acquisition method of accounting resulted in goodwill of $1.5 billion. All of the recognized goodwill was non‑deductible for tax purposes.

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Loans and Credit Quality (Details Textual) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Financing Receivable, Impaired [Line Items]
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	$ 0
Non-PCI nonaccrual loans	139,334,000	83,621,000
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	15,800,000	18,800,000
Financing Receivable Recorded Investment Thirty to Eighty Nine Days Past Due	21,700,000	8,700,000
Financing Receivable Recorded Investment Nonaccrual Status Current	$ 101,800,000	$ 56,100,000

XML

Fair Value Measurements Fair Value Measurements (Details 2) (Level 3, Private Label CMOs, Fair Value, Measurements, Recurring [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Level 3 CMO Roll Forward [Abstract]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	$ 33,444	$ 33,947
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings	154
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Other Comprehensive Income (Loss)	(109)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements	$ 548
Minimum [Member]
Unobservable Inputs Quantitative Information [Abstract]
Fair Value Inputs, Prepayment Rate	0.00%
Fair Value Inputs, Probability of Default	0.00%
Fair Value Inputs, Loss Severity	0.00%
Fair Value Inputs, Discount Rate	0.00%
Maximum [Member]
Unobservable Inputs Quantitative Information [Abstract]
Fair Value Inputs, Prepayment Rate	34.38%
Fair Value Inputs, Probability of Default	42.67%
Fair Value Inputs, Loss Severity	71.21%
Fair Value Inputs, Discount Rate	22.57%
Weighted Average [Member]
Unobservable Inputs Quantitative Information [Abstract]
Fair Value Inputs, Prepayment Rate	5.70%
Fair Value Inputs, Probability of Default	2.89%
Fair Value Inputs, Loss Severity	30.16%
Fair Value Inputs, Discount Rate	5.58%

XML

Loans and Credit Quality (Tables)

3 Months Ended

Mar. 31, 2015

Accounts, Notes, Loans and Financing Receivable [Line Items]

Schedule Of Composition of Loans Portfolio

The following table summarizes the composition of our loan and lease portfolio as of the dates indicated:

	March 31, 2015									December 31, 2014
	Non-PCI									Non-PCI
	Loans			PCI						Loans			PCI
	and Leases			Loans			Total			and Leases			Loans			Total
	(In thousands)
Real estate mortgage	$	5,601,937		$	226,502		$	5,828,439		$	5,350,827		$	256,489		$	5,607,316
Real estate construction	331,108			1,897			333,005			309,162			6,924			316,086
Commercial	6,021,282			25,664			6,046,946			5,852,420			27,155			5,879,575
Consumer	93,619			283			93,902			101,423			284			101,707
Total gross loans and leases	12,047,946			254,346			12,302,292			11,613,832			290,852			11,904,684
Deferred fees and costs	(30,065		)	(61		)	(30,126		)	(22,191		)	(61		)	(22,252		)
Total loans and leases, net of deferred fees	12,017,881			254,285			12,272,166			11,591,641			290,791			11,882,432
Allowance for loan and lease losses	(79,680		)	(12,698		)	(92,378		)	(70,456		)	(13,999		)	(84,455		)
Total net loans and leases	$	11,938,201		$	241,587		$	12,179,788		$	11,521,185		$	276,792		$	11,797,977

Allowance for Loan Losses

The following tables present a summary of the activity in the allowance for loan and lease losses on Non‑PCI loans and leases by portfolio segment and PCI loans for the periods indicated:

	Three Months Ended March 31, 2015
	Real Estate Mortgage			Real Estate Construction			Commercial			Consumer			Total Non-PCI			Total PCI			Total
	(In thousands)
Allowance for Loan and Lease Losses:
Balance, beginning of period	$	25,097		$	4,248		$	39,858		$	1,253		$	70,456		$	13,999		$	84,455
Charge-offs	(1,453		)	—			(8,395		)	(63		)	(9,911		)	(579		)	(10,490		)
Recoveries	1,295			632			410			194			2,531			11			2,542
Provision (negative provision)	5,972			(2,707		)	13,921			(582		)	16,604			(733		)	15,871
Balance, end of period	$	30,911		$	2,173		$	45,794		$	802		$	79,680		$	12,698		$	92,378
Amount of the allowance applicable to loans and leases:
Individually evaluated for impairment	$	1,500		$	55		$	10,493		$	178		$	12,226
Collectively evaluated for impairment	$	29,411		$	2,118		$	35,301		$	624		$	67,454
Acquired loans with deteriorated credit quality																$	12,698
Loan and Leases:
Ending balance	$	5,588,430		$	328,709		$	6,007,067		$	93,675		$	12,017,881		$	254,285		$	12,272,166
The ending balance of the loan and lease portfolio is composed of loans and leases:
Individually evaluated for impairment	$	59,733		$	8,639		$	103,208		$	3,729		$	175,309
Collectively evaluated for impairment	$	5,528,697		$	320,070		$	5,903,859		$	89,946		$	11,842,572
Acquired loans with deteriorated credit quality																$	254,285

	Three Months Ended March 31, 2014
	Real Estate Mortgage			Real Estate Construction			Commercial			Consumer			Total Non-PCI			Total PCI			Total
	(In thousands)
Allowance for loan and lease losses:
Balance, beginning of period	$	26,078		$	4,298		$	26,921		$	2,944		$	60,241		$	21,793		$	82,034
Charge-offs	(94		)	—			(1,441		)	(15		)	(1,550		)	—			(1,550		)
Recoveries	261			24			377			27			689			51			740
Provision (negative provision)	(1,893		)	(219		)	1,883			829			600			(644		)	(44		)
Balance, end of period	$	24,352		$	4,103		$	27,740		$	3,785		$	59,980		$	21,200		$	81,180
Amount of the allowance applicable to loans and leases:
Individually evaluated for impairment	$	2,690		$	251		$	5,337		$	387		$	8,665
Collectively evaluated for impairment	$	21,662		$	3,852		$	22,403		$	3,398		$	51,315
Acquired loans with deteriorated credit quality																$	21,200
Loan and Leases:
Ending balance	$	2,320,554		$	240,073		$	1,201,142		$	66,782		$	3,828,551		$	332,516		$	4,161,067
The ending balance of the loan and lease portfolio is composed of loans and leases:
Individually evaluated for impairment	$	58,532		$	12,926		$	17,792		$	3,972		$	93,222
Collectively evaluated for impairment	$	2,262,022		$	227,147		$	1,183,350		$	62,810		$	3,735,329
Acquired loans with deteriorated credit quality																$	332,516

CV of Loans Held for Investment by class by performing and nonperforming

The following table presents the credit risk rating categories for Non‑PCI loans and leases by portfolio segment and class as of the dates indicated. Nonclassified loans and leases are those with a credit risk rating of either pass or special mention, while classified loans and leases are those with a credit risk rating of either substandard or doubtful.

	March 31, 2015						December 31, 2014
	Classified		Nonclassified		Total		Classified		Nonclassified		Total
	(In thousands)
Real estate mortgage:
Hospitality	$	16,928	$	595,161	$	612,089	$	17,761	$	542,458	$	560,219
SBA	10,919		377,857		388,776		11,141		364,786		375,927
Other	69,859		4,517,706		4,587,565		68,084		4,336,330		4,404,414
Total real estate mortgage	97,706		5,490,724		5,588,430		96,986		5,243,574		5,340,560
Real estate construction:
Residential	398		121,918		122,316		402		96,326		96,728
Commercial	1,456		204,937		206,393		3,346		207,061		210,407
Total real estate construction	1,854		326,855		328,709		3,748		303,387		307,135
Commercial:
Collateralized	21,265		373,123		394,388		22,433		416,754		439,187
Unsecured	1,267		142,047		143,314		1,323		130,501		131,824
Asset-based	11,304		1,708,473		1,719,777		11,547		1,783,304		1,794,851
Cash flow	105,763		2,687,421		2,793,184		83,321		2,376,530		2,459,851
Equipment finance	86,938		827,078		914,016		15,973		953,516		969,489
SBA	3,128		39,260		42,388		3,207		44,054		47,261
Total commercial	229,665		5,777,402		6,007,067		137,804		5,704,659		5,842,463
Consumer	3,957		89,718		93,675		4,073		97,410		101,483
Total Non-PCI loans and leases	$	333,182	$	11,684,699	$	12,017,881	$	242,611	$	11,349,030	$	11,591,641

Schedule Of Non Accrual and Performing Restructured Impaired Financing Receivables

The following table presents the composition of our impaired loans and leases as of the dates indicated:

	March 31, 2015						December 31, 2014
			Performing		Total				Performing		Total
	Nonaccrual		Restructured		Impaired		Nonaccrual		Restructured		Impaired
	Loans/Leases		Loans		Loans/Leases		Loans/Leases		Loans		Loans/Leases
	(In thousands)
Real estate mortgage	$	37,335	$	22,398	$	59,733	$	37,612	$	20,245	$	57,857
Real estate construction	832		7,807		8,639		1,559		8,996		10,555
Commercial	97,693		5,515		103,208		40,965		5,744		46,709
Consumer	3,474		255		3,729		3,485		259		3,744
Total	$	139,334	$	35,975	$	175,309	$	83,621	$	35,244	$	118,865

Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period

The following table summarizes the changes in the carrying amount of PCI loans and accretable yield on those loans for the period indicated:

	Carrying Amount			Accretable Yield
	(In thousands)
Balance, December 31, 2014	$	276,792		$	(106,856	)
Accretion	10,183			10,183
Payments received	(46,121		)	—
Increase in expected cash flows, net	—			(6,190		)
Negative provision for credit losses	733			—
Balance, March 31, 2015	$	241,587		$	(102,863	)

Non Purchased Credit Impaired Loans and Leases [Member]

Accounts, Notes, Loans and Financing Receivable [Line Items]

Delinquent loans in loan portfolio

The following tables present an aging analysis of our Non‑PCI loans and leases by portfolio segment and class as of the dates indicated:

	March 31, 2015
	30-89 Days Past Due		90 or More  Days Past Due		Total Past Due		Current		Total
	(In thousands)
Real estate mortgage:
Hospitality	$	—	$	—	$	—	$	612,089	$	612,089
SBA	5,582		5,487		11,069		377,707		388,776
Other	6,234		5,319		11,553		4,576,012		4,587,565
Total real estate mortgage	11,816		10,806		22,622		5,565,808		5,588,430
Real estate construction:
Residential	—		—		—		122,316		122,316
Commercial	—		—		—		206,393		206,393
Total real estate construction	—		—		—		328,709		328,709
Commercial:
Collateralized	1,782		424		2,206		392,182		394,388
Unsecured	—		16		16		143,298		143,314
Asset-based	—		—		—		1,719,777		1,719,777
Cash flow	—		—		—		2,793,184		2,793,184
Equipment finance	23,409		—		23,409		890,607		914,016
SBA	788		1,362		2,150		40,238		42,388
Total commercial	25,979		1,802		27,781		5,979,286		6,007,067
Consumer	9		3,196		3,205		90,470		93,675
Total Non-PCI loans and leases	$	37,804	$	15,804	$	53,608	$	11,964,273	$	12,017,881

	December 31, 2014
	30-89 Days Past Due		90 or More Days Past Due		Total Past Due		Current		Total
	(In thousands)
Real estate mortgage:
Hospitality	$	—	$	—	$	—	$	560,219	$	560,219
SBA	5,530		4,357		9,887		366,040		375,927
Other	6,098		7,630		13,728		4,390,686		4,404,414
Total real estate mortgage	11,628		11,987		23,615		5,316,945		5,340,560
Real estate construction:
Residential	—		—		—		96,728		96,728
Commercial	—		715		715		209,692		210,407
Total real estate construction	—		715		715		306,420		307,135
Commercial:
Collateralized	878		965		1,843		437,344		439,187
Unsecured	69		45		114		131,710		131,824
Asset-based	—		—		—		1,794,851		1,794,851
Cash flow	—		232		232		2,459,619		2,459,851
Equipment finance	6,525		366		6,891		962,598		969,489
SBA	205		1,362		1,567		45,694		47,261
Total commercial	7,677		2,970		10,647		5,831,816		5,842,463
Consumer	101		3,146		3,247		98,236		101,483
Total Non-PCI loans and leases	$	19,406	$	18,818	$	38,224	$	11,553,417	$	11,591,641

Financing Receivable Non Accrual And Performing

The following table presents our nonaccrual and performing Non‑PCI loans and leases by portfolio segment and class as of the dates indicated:

	March 31, 2015						December 31, 2014
	Nonaccrual		Performing		Total		Nonaccrual		Performing		Total
	(In thousands)
Real estate mortgage:
Hospitality	$	8,088	$	604,001	$	612,089	$	6,366	$	553,853	$	560,219
SBA	10,919		377,857		388,776		11,141		364,786		375,927
Other	18,328		4,569,237		4,587,565		20,105		4,384,309		4,404,414
Total real estate mortgage	37,335		5,551,095		5,588,430		37,612		5,302,948		5,340,560
Real estate construction:
Residential	379		121,937		122,316		381		96,347		96,728
Commercial	453		205,940		206,393		1,178		209,229		210,407
Total real estate construction	832		327,877		328,709		1,559		305,576		307,135
Commercial:
Collateralized	3,601		390,787		394,388		5,450		433,737		439,187
Unsecured	594		142,720		143,314		639		131,185		131,824
Asset-based	4,159		1,715,618		1,719,777		4,574		1,790,277		1,794,851
Cash flow	15,172		2,778,012		2,793,184		15,964		2,443,887		2,459,851
Equipment finance	71,039		842,977		914,016		11,131		958,358		969,489
SBA	3,128		39,260		42,388		3,207		44,054		47,261
Total commercial	97,693		5,909,374		6,007,067		40,965		5,801,498		5,842,463
Consumer	3,474		90,201		93,675		3,485		97,998		101,483
Total Non-PCI loans and leases	$	139,334	$	11,878,547	$	12,017,881	$	83,621	$	11,508,020	$	11,591,641

Impaired Financing Receivables, Average Balances And Interest Income Recognized

The following tables present information regarding our Non‑PCI impaired loans and leases by portfolio segment and class as of and for the dates indicated:

	March 31, 2015						December 31, 2014
	Recorded Investment		Unpaid Principal Balance		Related Allowance		Recorded Investment		Unpaid Principal Balance		Related Allowance
	(In thousands)
With An Allowance Recorded:
Real estate mortgage:
Hospitality	$	1,930	$	1,930	$	31	$	1,946	$	1,945	$	47
SBA	—		—		—		—		—		—
Other	12,986		13,169		1,469		9,136		9,233		646
Real estate construction:
Residential	759		759		41		763		763		46
Commercial	403		401		14		1,128		4,934		23
Commercial:
Collateralized	4,811		5,486		3,497		4,630		5,246		3,771
Unsecured	1,055		1,067		913		912		924		799
Asset-based	47		157		47		137		247		137
Cash flow	14,974		17,694		2,522		15,578		17,970		2,667
Equipment finance	9,347		9,764		3,514		6,956		7,268		2,601
SBA	—		—		—		—		—		—
Consumer	383		386		178		143		142		37
With No Related Allowance Recorded:
Real estate mortgage:
Hospitality	$	8,088	$	10,096	$	—	$	6,366	$	7,593	$	—
SBA	10,919		15,030		—		11,141		14,708		—
Other	25,810		39,548		—		29,268		40,643		—
Real estate construction:
Residential	20		19		—		21		19		—
Commercial	7,457		7,571		—		8,643		8,749		—
Commercial:
Collateralized	3,324		4,234		—		5,566		6,877		—
Unsecured	519		564		—		725		809		—
Asset-based	4,111		5,220		—		4,436		5,415		—
Cash flow	198		735		—		387		919		—
Equipment finance	61,694		67,850		—		4,175		7,528		—
SBA	3,128		4,762		—		3,207		4,920		—
Consumer	3,346		3,506		—		3,601		3,768		—
Total Non-PCI Loans and Leases With and Without an Allowance Recorded:
Real estate mortgage	$	59,733	$	79,773	$	1,500	$	57,857	$	74,122	$	693
Real estate construction	8,639		8,750		55		10,555		14,465		69
Commercial	103,208		117,533		10,493		46,709		58,123		9,975
Consumer	3,729		3,892		178		3,744		3,910		37
Total	$	175,309	$	209,948	$	12,226	$	118,865	$	150,620	$	10,774

	Three Months Ended March 31,
	2015				2014
	Weighted Average Balance(1)		Interest Income Recognized		Weighted Average Balance(1)		Interest Income Recognized
	(In thousands)
With An Allowance Recorded:
Real estate mortgage:
Hospitality	$	1,930	$	19	$	5,658	$	20
SBA	—		—		1,092		15
Other	12,783		136		16,174		119
Real estate construction:
Residential	759		4		774		4
Commercial	403		5		5		—
Commercial:
Collateralized	4,646		33		3,765		6
Unsecured	1,055		11		742		6
Asset-based	47		—		304		—
Cash flow	14,973		—		—		—
Equipment finance	4,581		—		—		—
SBA	—		—		919		10
Consumer	383		4		2,151		4
With No Related Allowance Recorded:
Real estate mortgage:
Hospitality	$	7,836	$	—	$	2,971	$	—
SBA	9,836		—		2,519		—
Other	24,219		80		23,549		63
Real estate construction:
Residential	20		—		—		—
Commercial	7,457		271		5,491		25
Commercial:
Collateralized	3,324		48		4,861		6
Unsecured	519		1		326		—
Asset-based	4,111		—		—		—
Cash flow	198		—		—		—
Equipment finance	7,537		—		220		—
SBA	3,128		45		3,132		2
Consumer	3,345		—		251		1
Total Non-PCI Loans and Leases With and Without an Allowance Recorded:
Real estate mortgage	$	56,604	$	235	$	51,963	$	217
Real estate construction	8,639		280		6,270		29
Commercial	44,119		138		14,269		30
Consumer	3,728		4		2,402		5
Total	$	113,090	$	657	$	74,904	$	281

_________________________

(1) For the loans and leases (excluding PCI loans) reported as impaired at March 31, 2015 and 2014, amounts were calculated based on the period of time such loans and leases were impaired during the reported period.

Troubled Debt Restructurings on Financing Receivables

The following table presents new troubled debt restructurings of Non-PCI loans for the periods indicated:

	Three Months Ended March 31, 2015					Three Months Ended March 31, 2014
Troubled Debt Restructurings:	Number of Loans	Pre- Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment		Number of Loans	Pre- Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment
	(Dollars in thousands)
Real estate mortgage:
Other	14	$	6,074	$	5,886	4	$	2,515	$	2,515
Real estate construction:
Commercial	1	2,610		2,610		2	4,927		4,927
Commercial:
Collateralized	6	1,399		1,399		4	3,287		3,287
Unsecured	1	195		195		2	38		38
Cash flow	2	566		387		—	—		—
Equipment finance	4	4,133		4,133		—	—		—
SBA	1	—		—		1	238		238
Consumer	1	91		91		1	124		124
Total	30	$	15,068	$	14,701	14	$	11,129	$	11,129

The following table presents troubled debt restructurings that subsequently defaulted for the periods indicated:

	Three Months Ended March 31,
	2015				2014
Troubled Debt Restructurings	Number of	Recorded			Number of	Recorded
That Subsequently Defaulted:	Loans	Investment(1)			Loans	Investment(1)
	(Dollars in thousands)
Real estate mortgage - Other	2	$	1,519		—	$	—
Commercial:
Collateralized	1	385			2	559
Unsecured	—	—			1	21
Asset-based	—	—			1	301
Total	3	$	1,904	(2)	4	$	881	(3)

_________________________

(1) The population of defaulted restructured loans for the period indicated includes only those loans restructured during the preceding 12-month period. The table excludes defaulted troubled restructurings in those classes for which the recorded investment was zero at the end of the period.

(2) Represents the balance at March 31, 2015, and is net of charge-offs of $772,000.

(3) Represents the balance at March 31, 2014, and there were no charge-offs.

Purchased Credit Impaired Loans and Leases [Member]

Accounts, Notes, Loans and Financing Receivable [Line Items]

CV of Loans Held for Investment by class by performing and nonperforming

The following table presents PCI loans by credit risk rating categories and portfolio segment as of the dates indicated. Nonclassified loans are those with a credit risk rating of either pass or special mention, while classified loans are those with a credit risk rating of either substandard or doubtful.

	March 31, 2015						December 31, 2014
	Classified		Nonclassified		Total		Classified		Nonclassified		Total
	(In thousands)
Real estate mortgage	$	77,548	$	148,902	$	226,450	$	101,161	$	155,281	$	256,442
Real estate construction	1,888		—		1,888		3,901		3,010		6,911
Commercial	25,476		188		25,664		26,942		212		27,154
Consumer	283		—		283		284		—		284
Total PCI loans	$	105,195	$	149,090	$	254,285	$	132,288	$	158,503	$	290,791

Schedule of Accounts, Notes, Loans and Financing Receivable

The following table reflects the PCI loans by portfolio segment as of the dates indicated:

	March 31, 2015			December 31, 2014
	(In thousands)
Real estate mortgage	$	268,777		$	299,660
Real estate construction	2,540			7,743
Commercial	31,185			32,904
Consumer	326			332
Total gross PCI loans	302,828			340,639
Less:
Discount	(48,543		)	(49,848		)
Allowance for loan losses	(12,698		)	(13,999		)
Total net PCI loans	$	241,587		$	276,792

XML

Fair Value Measurements Fair Value Measurements (Details Textuals) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Assets, Level 1 to Level 2 Transfers, Amount	$ 0
Threshold for loans that are considered individually significant for allowance analysis purposes	250,000
Non-PCI nonaccrual loans	139,334,000	83,621,000
Carrying Value of Nonaccrual Loans with Collateral Write-downs	$ 24,500,000

XML

Uncategorized Items
[us-gaap_SharesOutstanding]	103,022,017

XML

Acquisitions Acquisitions (Details Textuals) (USD $) In Thousands, unless otherwise specified	3 Months Ended		0 Months Ended
	Mar. 31, 2015		Apr. 07, 2014	Dec. 31, 2014	Mar. 31, 2014
Business Acquisition [Line Items]
Business Acquisition, Effective Date of Acquisition	Apr. 07, 2014
Goodwill	$ 1,728,380	[1]		$ 1,720,479	$ 208,743
Capitalsource, Inc. [Member]
Business Acquisition [Line Items]
Business Acquisition, Effective Date of Acquisition			Apr. 07, 2014
Goodwill			$ 1,526,282

[1] The increase in goodwill for the Community Banking segment and National Lending segment compared to March 31, 2014, was due primarily to $1.5 billion from the CapitalSource Inc. merger.

XML

Stock Based Compensation Plans (Notes)

3 Months Ended

Mar. 31, 2015

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Disclosure of Compensation Related Costs, Share-based Payments

Note 13. Stock Based Compensation

The Company’s 2003 Stock Incentive Plan, or the 2003 Plan, permits stock-based compensation awards to officers, directors, key employees and consultants. As of March 31, 2015, the 2003 Plan authorized grants of stock‑based compensation instruments to purchase or issue up to 19,686,565 shares of Company common stock, subject to adjustments provided by the 2003 Plan. The authorized amount includes 10,686,565 shares that were added to the 2003 Plan as a result of the CapitalSource Inc. merger. Such shares were available for grant under the former CapitalSource Inc. Equity Incentive Plan and remain available for: (a) former employees of CapitalSource Bank who remain employed with the Company, and (b) newly hired employees of the Company. As of March 31, 2015, there were 13,510,779 shares available for grant under the 2003 Plan, of which 10,082,099 shares related to those added from the CapitalSource Inc. merger.

Restricted Stock

At March 31, 2015, there were 1,129,445 shares of unvested time‑based restricted common stock outstanding. The awarded shares of time‑based restricted common stock vest over a service period of three to four years from the date of the grant. The time-based restricted common stock vests immediately upon the death of an employee.

Compensation expense related to time‑based restricted stock awards is based on the fair value of the underlying stock on the award date and is recognized over the vesting period using the straight‑line method. Restricted stock amortization totaled $3.1 million, $2.8 million, and $1.6 million for the three months endedMarch 31, 2015, December 31, 2014 and March 31, 2014. Such amounts are included in "Compensation expense" on the accompanying condensed consolidated statements of earnings.

The amount of unrecognized compensation expense related to all unvested restricted stock as of March 31, 2015 totaled $34.6 million.