10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 20549

FORM 10-Q

(Mark One)

ý QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended March 31, 2019

OR

¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from _______________ to __________________.

Commission File No. 0-13660

Seacoast Banking Corporation of Florida

(Exact Name of Registrant as Specified in its Charter)

Florida	59-2260678
(State or Other Jurisdiction of Incorporation or Organization	(I.R.S. Employer Identification No.)

815 COLORADO AVENUE, STUART FL	34994
(Address of Principal Executive Offices)	(Zip Code)

(772) 287-4000

(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 ý No ¨

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted 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 such files).

Yes ý No ¨

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

Large Accelerated	Accelerated	Non-Accelerated	Small Reporting
Filer x	Filer ¨	Filer ¨	Company ¨
			Emerging Growth
			Company ¨

 If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨

 Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).

Yes ¨ No ý

Securities registered pursuant to Section 12(b) of the Act:  

Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Common Stock	SBCF	Nasdaq Global Select Market

Common Stock, $0.10 Par Value – 51,413,988 shares as of March 31, 2019

INDEX

SEACOAST BANKING CORPORATION OF FLORIDA

		PAGE #
Part I	FINANCIAL INFORMATION
Item 1.	Financial Statements (Unaudited)
	Condensed consolidated statements of income – Three months ended March 31, 2019 and 2018	3
	Condensed consolidated statements of comprehensive income – Three months ended March 31, 2019 and 2018	4
	Condensed consolidated balance sheets - March 31, 2019 and December 31, 2018	5
	Consolidated statements of cash flows – Three months ended March 31, 2019 and 2018	6
	Consolidated statements of shareholders' equity - Three months ended March 31, 2019 and 2018	8
	Notes to condensed consolidated financial statements	9
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	30
Item 3.	Quantitative and Qualitative Disclosures about Market Risk	56
Item 4.	Controls and Procedures	57
Part II	OTHER INFORMATION
Item 1.	Legal Proceedings	57
Item 1A.	Risk Factors	57
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	58
Item 3.	Defaults upon Senior Securities	58
Item 4.	Mine Safety Disclosures	58
Item 5.	Other Information	58
Item 6.	Exhibits	60
SIGNATURES		60

2

Part I. FINANCIAL INFORMATION

Item 1. Financial Statements

SEACOAST BANKING CORPORATION OF FLORIDA AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited)

	Three Months Ended March 31,
(In thousands, except per share data)	2019			2018
Interest and fees on loans	$	62,287		$	45,257
Interest and dividends on securities	9,270			9,604
Interest on interest bearing deposits and other investments	918			616
Total Interest Income	72,475			55,477
Interest on deposits	3,873			1,538
Interest on time certificates	4,959			2,179
Interest on borrowed money	2,869			1,998
Total Interest Expense	11,701			5,715
Net Interest Income	60,774			49,762
Provision for loan losses	1,397			1,085
Net Interest Income after Provision for Loan Losses	59,377			48,677
Noninterest income
Other income	12,845			12,398
Securities losses, net	(9		)	(102		)
Total Noninterest Income (Note I)	12,836			12,296
Total Noninterest Expenses (Note I)	43,099			37,164
Income Before Income Taxes	29,114			23,809
Provision for income taxes	6,409			5,782
Net Income	$	22,705		$	18,027
Share Data
Net income per share of common stock
Diluted	$	0.44		$	0.38
Basic	0.44			0.38
Average common shares outstanding
Diluted	52,039			47,688
Basic	51,359			46,952

See notes to unaudited condensed consolidated financial statements.

3

SEACOAST BANKING CORPORATION OF FLORIDA AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited)

	Three Months Ended March 31,
(In thousands)	2019			2018
Net Income	$	22,705		$	18,027
Other comprehensive income (loss):
Unrealized gains (losses) on securities available for sale	12,676			(11,022		)
Reclassification of unrealized losses on securities transferred to available for sale upon adoption of new accounting pronouncement	(730		)	—
Amortization of unrealized losses on securities transferred to held to maturity, net	71			115
Reclassification adjustment for losses included in net income	87			—
(Provision) benefit for income taxes	(3,261		)	2,898
Total other comprehensive income (loss)	8,843			(8,009		)
Comprehensive Income	$	31,548		$	10,018

See notes to unaudited condensed consolidated financial statements.

4

SEACOAST BANKING CORPORTATION OF FLORIDA AND SUBSIDIARIES

CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited)

(In thousands, except share data)	March 31, 2019			December 31, 2018
Assets
Cash and due from banks	$	98,270		$	92,242
Interest bearing deposits with other banks	105,741			23,709
Total cash and cash equivalents	204,011			115,951
Time deposits with other banks	8,174			8,243
Debt securities:
Securities available for sale (at fair value)	877,549			865,831
Securities held to maturity (fair value $291,340 at March 31, 2019 and $349,895 at December 31, 2018)	295,485			357,949
Total debt securities	1,173,034			1,223,780
Loans held for sale (at fair value)	13,900			11,873
Loans	4,828,441			4,825,214
Less: Allowance for loan losses	(32,822		)	(32,423		)
Loans, net of allowance for loan losses	4,795,619			4,792,791
Bank premises and equipment, net	70,412			71,024
Other real estate owned	11,921			12,802
Goodwill	205,260			204,753
Other intangible assets, net	23,959			25,977
Bank owned life insurance	124,306			123,394
Net deferred tax assets	24,647			28,954
Other assets	128,146			128,117
Total Assets	$	6,783,389		$	6,747,659
Liabilities
Deposits	$	5,605,578		$	5,177,240
Securities sold under agreements to repurchase, maturing within 30 days	148,005			214,323
Federal Home Loan Bank (FHLB) borrowings	3,000			380,000
Subordinated debt	70,874			70,804
Other liabilities	59,508			41,025
Total Liabilities	5,886,965			5,883,392
Shareholders' Equity
Common stock, par value $0.10 per share, authorized 120,000,000 shares, issued 51,621,160 and outstanding 51,413,988 shares at March 31, 2019, and authorized 120,000,000, issued 51,514,734 and outstanding 51,361,079 shares at December 31, 2018	5,141			5,136
Other shareholders' equity	891,283			859,131
Total Shareholders' Equity	896,424			864,267
Total Liabilities and Shareholders' Equity	$	6,783,389		$	6,747,659

See notes to unaudited condensed consolidated financial statements.

5

SEACOAST BANKING CORPORATION OF FLORIDA AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited)

	Three Months Ended March 31,
(In thousands)	2019			2018
Cash Flows from Operating Activities
Net income	$	22,705		$	18,027
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	1,669			1,568
Amortization of premiums and discounts on securities, net	625			742
Amortization of operating lease right-of-use assets	1,025			—
Other amortization and accretion, net	(810		)	(406		)
Stock based compensation	2,129			1,454
Origination of loans designated for sale	(54,034		)	(78,156		)
Sale of loans designated for sale	54,813			83,459
Provision for loan losses	1,397			1,085
Deferred income taxes	1,216			4,707
Losses on sale of securities	87			—
Gains on sale of loans	(1,819		)	(1,884		)
Gains on sale and write-downs of other real estate owned	(187		)	1
Losses on disposition of fixed assets	(208		)	(4		)
Changes in operating assets and liabilities, net of effects from acquired companies:
Net decrease in other assets	2,069			2,234
Net decrease in other liabilities	(10,594		)	(273		)
Net cash provided by operating activities	20,083			32,554
Cash Flows from Investing Activities
Maturities and repayments of debt securities available for sale	18,261			27,296
Maturities and repayments of debt securities held to maturity	8,830			16,085
Proceeds from sale of debt securities available for sale	35,048			—
Purchases of debt securities available for sale	—			(72,311		)
Maturities of time deposits with other banks	69			—
Net new loans and principal repayments	(3,141		)	(84,063		)
Proceeds from sale of other real estate owned	1,572			3,300
Proceeds from sale of FHLB and Federal Reserve Bank Stock	22,057			10,540
Purchase of FHLB and Federal Reserve Bank Stock	(9,749		)	(13,027		)
Proceeds from sale of Visa Class B stock	—			21,333
Redemption of bank owned life insurance	12,378			4,232
Additions to bank premises and equipment	(849		)	(1,288		)
Net cash provided by (used in) investing activities	84,476			(87,903		)

See notes to unaudited condensed consolidated financial statements.

6

SEACOAST BANKING CORPORATION OF FLORIDA AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited)

	Three Months Ended March 31,
(In thousands)	2019			2018
Cash Flows from Financing Activities
Net increase in deposits	$	428,338		$	126,823
Net decrease in federal funds purchased and repurchase agreements	(66,318		)	(42,845		)
Net decrease in FHLB borrowings	(377,000		)	(3,000		)
Stock based employee benefit plans	(1,519		)	726
Dividends paid	—			—
Net cash (used in) provided by financing activities	(16,499		)	81,704
Net increase in cash and cash equivalents	88,060			26,355
Cash and cash equivalents at beginning of period	115,951			109,504
Cash and cash equivalents at end of period	$	204,011		$	135,859
Supplemental disclosure of cash flow information:
Cash paid during the period for interest	$	11,422		$	5,533
Cash paid during the period for taxes	—			1,200
Initial recognition of operating lease right-of-use assets	29,077			—
Initial recognition of operating lease liabilities	33,403			—
Supplemental disclosure of non cash investing activities:
Transfer of debt securities from held to maturity to available for sale	$	52,796		$	—
Transfers from loans to other real estate owned	430			3,919
Transfers from bank premises to other real estate owned	—			2,030

See notes to unaudited condensed consolidated financial statements.

7

SEACOAST BANKING CORPORATION OF FLORIDA AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Unaudited)

													Accumulated Other
	Common Stock			Paid-in			Retained			Treasury			Comprehensive
(In thousands)	Shares	Amount		Capital			Earnings			Stock			Income (Loss), Net			Total
Balance at December 31, 2017	46,918	$	4,693	$	661,632		$	29,913		$	(2,359	)	$	(4,216	)	$	689,663
Comprehensive income	—	—		—			18,027			—			(8,009		)	10,018
Reclassification of unrealized losses on equity investment upon adoption of new accounting pronouncement	—	—		—			(115		)	—			115			—
Stock based compensation expense	—	—		1,455			—			—			—			1,455
Common stock issued for stock based employee benefit plans	3	—		(2		)	—			80			—			78
Common stock issued for stock options	62	5		642			—			—			—			647
Three months ended March 31, 2018	65	5		2,095			17,912			80			(7,894		)	12,198
Balance at March 31, 2018	46,983	$	4,698	$	663,727		$	47,825		$	(2,279	)	$	(12,110	)	$	701,861

												Accumulated Other
	Common Stock			Paid-in			Retained		Treasury			Comprehensive
(In thousands)	Shares	Amount		Capital			Earnings		Stock			Income (Loss), Net			Total
Balance at December 31, 2018	51,361	$	5,136	$	778,501		$	97,074	$	(3,384	)	$	(13,060	)	$	864,267
Comprehensive income	—	—		—			22,705		—			8,843			31,548
Stock based compensation expense	—	—		2,129			—		—			—			2,129
Common stock issued for stock based employee benefit plans	49	5		(14		)	—		(1,575		)	—			(1,584		)
Common stock issued for stock options	4	—		64			—		—			—			64
Three months ended March 31, 2019	53	5		2,179			22,705		(1,575		)	8,843			32,157
Balance at March 31, 2019	51,414	$	5,141	$	780,680		$	119,779	$	(4,959	)	$	(4,217	)	$	896,424

See notes to unaudited condensed consolidated financial statements.

8

SEACOAST BANKING CORPORATION OF FLORIDA AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

Note A – Basis of Presentation

Basis of Presentation: The accompanying unaudited condensed consolidated financial statements of Seacoast Banking Corporation of Florida and its subsidiaries (the "Company") have been prepared in accordance with U.S. generally accepted accounting principles for interim financial information and with the instructions to Form 10-Q and Rule 10-01 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by U.S. generally accepted accounting principles for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation have been included. Certain prior period amounts have been reclassified to conform to the current period presentation.

Operating results for the three months ended March 31, 2019 are not necessarily indicative of the results that may be expected for the year ending December 31, 2019 or any other period. For further information, refer to the consolidated financial statements and footnotes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2018.

Adoption of new accounting pronouncements: On January 1, 2019, the Company adopted Financial Accounting Standards Board (“FASB”) Accounting Standards Update (“ASU”) 2016-02, “Leases”, and all the related amendments (collectively, Accounting Standards Codification “ASC” Topic 842) through a cumulative-effect adjustment.

The new guidance requires a lessee to recognize at the transition date right-of-use assets ("ROUA") and lease liabilities for all operating leases. Upon adoption, the Company recognized ROUAs of $29 million and lease liabilities of $33 million. Operating lease liabilities are measured based on the present value of lease payments over the lease term. At the transition date, ROUA was determined by adjusting lease liabilities for the carrying balances of deferred rent under ASC Topic 840 Leases, cease-use liabilities under ASC Topic 420 Exit or Disposal Cost Obligations, and assets and liabilities recognized under ASC Topic 805 Business Combinations for acquired operating leases, which aggregated to $4 million.

We determine if an arrangement is a lease at the inception of a lease. ROUAs represent our right to use the underlying asset and lease liabilities represent our obligation to make lease payments for the lease term. Operating lease ROUAs and liabilities are recognized at commencement date based on the present value of lease payments over the lease term. As most of our leases do not provide an implicit rate, we use our incremental borrowing rate based on the appropriate term and information available at commencement date in determining the present value of lease payments. The lease term may include options to extend the lease when it is reasonably certain that we will exercise that option. ROUAs and operating lease liabilities are reported in Other Assets and Other Liabilities, respectively, in the Consolidated Balance Sheet. Lease expense for lease payments is recognized on a straight-line basis over the lease term.

The Company elected certain practical expedients offered by the FASB for all classes of leased assets. As a result, the Company has not reassessed whether existing contracts are or contain leases, nor has the Company reassessed the classification of existing leases. The Company elected not to separate lease and non-lease components and instead accounts for them as a single lease component. The Company also elected to exclude short-term leases from the recognition of right-of-use assets and lease liabilities. Therefore, if the lease term is equal to or less than twelve months (including the renewal options that we are reasonably certain to exercise) and we are not reasonably certain to exercise any available purchase options in the lease, we do not apply the new lease accounting guidance for those leases. The Company did not elect the hindsight practical expedient, which allows entities to use hindsight when determining lease term and impairment of right-of-use assets.

On January 1, 2019, we adopted ASU 2017-12 “Derivatives and Hedging" (Topic 815): Targeted Improvements to Accounting for Hedging Activities. Upon adoption, we reclassified certain debt securities from held to maturity to available for sale. The following table summarizes the impact:

9

	January 1, 2019
(In thousands)	Amortized Cost		Net Unrealized Gain (Loss) Reflected in OCI			Fair Value
Private mortgage-backed securities and collateralized mortgage obligations	$	21,526	$	147		$	21,673
Collateralized loan obligations	32,000		(877		)	31,123
Totals	$	53,526	$	(730	)	$	52,796

Use of Estimates: The preparation of these condensed consolidated financial statements requires management to make judgments in the application of certain of its accounting policies that involve significant estimates and assumptions. We have established policies and control procedures that are intended to ensure valuation methods are well controlled and applied consistently from period to period. These estimates and assumptions, which may materially affect the reported amounts of certain assets, liabilities, revenues and expenses, are based on information available as of the date of the financial statements, and changes in this information over time and the use of revised estimates and assumptions could materially affect amounts reported in subsequent financial statements. Specific areas, among others, requiring the application of management’s estimates include determination of the allowance for loan losses, acquisition accounting and purchased loans, intangible assets and impairment testing, other fair value adjustments, other than temporary impairment of securities, income taxes and realization of deferred tax assets and contingent liabilities.

10

Note B – Recently Issued Accounting Standards, Not Yet Adopted

 The following provides a brief description of accounting standards that have been issued but are not yet adopted that could have a material effect on the Company's financial statements:

ASU 2016-13, Financial Instruments –Credit Losses (Topic 326)
Description	In June 2016, FASB issued guidance to replace the incurred loss model with an expected loss model, which is referred to as the current expected credit loss (CECL) model. The CECL model is applicable to the measurement of credit losses on financial assets measured at amortized cost, including loan receivables and held to maturity debt securities. It also applies to off-balance sheet credit exposures not accounted for as insurance (i.e. loan commitments, standby letters of credit, financial guarantees and other similar instruments).
Date of Adoption	This amendment is effective for public business entities for reporting periods beginning after December 15, 2019, including interim periods within that reporting period. Early adoption is permitted only as of annual reporting periods after December 15, 2018, including interim reporting periods within that period.
Effect on the Consolidated Financial Statements	The Company's transition oversight committee is in the process of validating the credit loss estimation models and related processes. Updates to business processes and the documentation of accounting policy decisions are ongoing. The Company may recognize an increase in the allowance for credit losses upon adoption, recorded as a one-time cumulative adjustment to retained earnings. However, the magnitude of the impact on the Company's consolidated financial statements has not yet been determined. The Company will adopt this accounting standard effective January 1, 2020.

ASU 2017-04, Intangibles – Goodwill and Other (Topic 350): Simplifying the Test for Goodwill
Description	In January 2017, the FASB amended the existing guidance to simplify the goodwill impairment measurement test by eliminating Step 2. The amendment requires the Company to perform the goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount and recognizing an impairment charge for the amount by which the carrying amount exceeds the fair value. Additionally, an entity should consider the tax effects from any tax deductible goodwill on the carrying amount when measuring the impairment loss.
Date of Adoption	This amendment is effective for public business entities for reporting periods beginning after December 15, 2019, including interim periods within that reporting period. Early adoption is permitted on annual goodwill impairment tests performed after January 1, 2017.
Effect on the Consolidated Financial Statements	The impact to the consolidated financial statements from the adoption of this pronouncement is not expected to be material.

Note C – Earnings per Share

Basic earnings per common share is computed by dividing net income available to common shareholders by the weighted average number of shares of common stock outstanding during the period.

For the three months ended March 31, 2019, options to purchase 487,000 shares were antidilutive and accordingly were excluded in the computation of diluted earnings per share, compared to 274,000 shares for the three months ended March 31, 2018.

	Three Months Ended March 31,
(Dollars in thousands, except per share data)	2019		2018
Basic earnings per share
Net income	$	22,705	$	18,027
Average common shares outstanding	51,359		46,952
Net income per share	$	0.44	$	0.38
Diluted earnings per share
Net income	$	22,705	$	18,027
Average common shares outstanding	51,359		46,952
Add: Dilutive effect of employee restricted stock and stock options	680		736
Average diluted shares outstanding	52,039		47,688
Net income per share	$	0.44	$	0.38

11

Note D – Securities

The amortized cost, gross unrealized gains and losses and fair value of securities available for sale and held to maturity at March 31, 2019 and December 31, 2018are summarized as follows:

	March 31, 2019
(In thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Debt securities available for sale
U.S. Treasury securities and obligations of U.S. Government Sponsored Entities	$	6,296	$	105	$	(4	)	$	6,397
Mortgage-backed securities and collateralized mortgage obligations of U.S. Government Sponsored Entities	528,404		1,777		(6,228		)	523,953
Private mortgage-backed securities and collateralized mortgage obligations	67,206		968		(239		)	67,935
Collateralized loan obligations	243,546		2		(1,809		)	241,739
Obligations of state and political subdivisions	37,105		621		(201		)	37,525
Totals	$	882,557	$	3,473	$	(8,481	)	$	877,549
Debt securities held to maturity
Mortgage-backed securities of U.S. Government Sponsored Entities	$	295,485	$	356	$	(4,501	)	$	291,340
Totals	$	295,485	$	356	$	(4,501	)	$	291,340

	December 31, 2018
(In thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Debt securities available for sale
U.S. Treasury securities and obligations of U.S. Government Sponsored Entities	$	7,200	$	106	$	(6	)	$	7,300
Mortgage-backed securities and collateralized mortgage obligations of U.S. Government Sponsored Entities	567,753		300		(14,047		)	554,006
Private mortgage-backed securities and collateralized mortgage obligations	55,569		560		(401		)	55,728
Collateralized loan obligations	212,807		1		(3,442		)	209,366
Obligations of state and political subdivisions	39,543		339		(451		)	39,431
Totals	$	882,872	$	1,306	$	(18,347	)	$	865,831
Debt securities held to maturity
Mortgage-backed securities of U.S. Government Sponsored Entities	$	304,423	$	—	$	(7,324	)	$	297,099
Private mortgage-backed securities and collateralized mortgage obligations	21,526		277		(130		)	21,673
Collateralized loan obligations	32,000		—		(877		)	31,123
Totals	$	357,949	$	277	$	(8,331	)	$	349,895

Proceeds from sales of securities during the three months ended March 31, 2019 were $35.0 million, with gross gains of $0.2 million and gross losses of $0.3 million, which are included in "Securities losses, net" for the three months ended March 31, 2019.

12

Also included in “Securities losses, net” for the three months endedMarch 31, 2019 is an increase of $0.1 million, representing the change in the value of an investment in shares of a mutual fund that invests primarily in CRA-qualified debt securities.

There were no sales of securities during the three month period ended March 31, 2018. Included in “Securities losses, net” for the three month period endedMarch 31, 2018, is a $0.1 million decline in the value of the CRA-qualified mutual fund investment.

On January 1, 2019, the Company adopted ASU 2017-12 and subsequently transferred held to maturity debt securities with an amortized cost basis of $53.5 million to available for sale. Those securities had unrealized losses of $0.7 million that was recorded in other comprehensive income on the date of transfer.

At March 31, 2019, debt securities with a fair value of $122.3 million were pledged as collateral for United States Treasury deposits, other public deposits and trust deposits. Debt securities with a fair value of $148.0 million were pledged as collateral for repurchase agreements.

The amortized cost and fair value of debt securities held to maturity and available for sale at March 31, 2019, by contractual maturity, are shown below. Expected maturities will differ from contractual maturities because prepayments of the underlying collateral for these securities may occur, due to the right to call or repay obligations with or without call or prepayment penalties. Securities not due at a single maturity date are shown separately.

	Held to Maturity				Available for Sale
(In thousands)	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Due in less than one year	$	—	$	—	$	11,288	$	11,268
Due after one year through five years	—		—		102,835		102,588
Due after five years through ten years	—		—		169,369		168,212
Due after ten years	—		—		3,455		3,593
	—		—		286,947		285,661
Mortgage-backed securities and collateralized mortgage obligations of U.S. Government Sponsored Entities	295,485		291,340		528,404		523,953
Private mortgage-backed securities and collateralized mortgage obligations	—		—		67,206		67,935
Totals	$	295,485	$	291,340	$	882,557	$	877,549

The estimated fair value of a security is determined based on market quotations when available or, if not available, by using quoted market prices for similar securities, pricing models or discounted cash flows analyses, using observable market data where available. The tables below indicate the fair value of debt securities with unrealized losses and the period of time for which these losses were outstanding at March 31, 2019 and December 31, 2018, respectively.

	March 31, 2019
	Less Than 12 Months					12 Months or Longer					Total
(In thousands)	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
U.S. Treasury securities and obligations of U.S. Government Sponsored Entities	$	—	—			$	545	$	(4	)	$	545	$	(4	)
Mortgage-backed securities and collateralized mortgage obligations of U.S. Government Sponsored Entities	80,889		(512		)	496,722		(10,217		)	577,611		(10,729		)
Private mortgage-backed securities and collateralized mortgage obligations	20,061		(230		)	2,038		(9		)	22,099		(239		)
Collateralized loan obligations	238,777		(1,809		)	—		—			238,777		(1,809		)
Obligations of state and political subdivisions	—		—			12,966		(201		)	12,966		(201		)
Totals	$	339,727	$	(2,551	)	$	512,271	$	(10,431	)	$	851,998	$	(12,982	)

13

	December 31, 2018
	Less Than 12 Months					12 Months or Longer					Total
(In thousands)	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
U.S. Treasury securities and obligations of U.S. Government Sponsored Entities	$	99	$	(1	)	$	642	$	(5	)	$	741	$	(6	)
Mortgage-backed securities and collateralized mortgage obligations of U.S. Government Sponsored Entities	200,184		(2,235		)	623,420		(19,136		)	823,604		(21,371		)
Private mortgage-backed securities and collateralized mortgage obligations	20,071		(344		)	12,739		(187		)	32,810		(531		)
Collateralized loan obligations	238,894		(4,319		)	—		—			238,894		(4,319		)
Obligations of state and political subdivisions	19,175		(241		)	9,553		(210		)	28,728		(451		)
Totals	$	478,423	$	(7,140	)	$	646,354	$	(19,538	)	$	1,124,777	$	(26,678	)

The two tables above include debt securities held to maturity that were transferred from available for sale into held to maturity during 2014. Those securities had unrealized losses of $3.1 million at the date of transfer, and at March 31, 2019, the unamortized balance was $0.6 million.

At March 31, 2019, the Company had $10.7 million of unrealized losses on mortgage-backed securities and collateralized mortgage obligations of government sponsored entities having a fair value of $577.6 million that were attributable to a combination of factors, including relative changes in interest rates since the time of purchase. The contractual cash flows for these securities are guaranteed by U.S. government agencies and U.S. government-sponsored enterprises. Based on the assessment of these mitigating factors, management believes that the unrealized losses on these debt security holdings are a function of changes in investment spreads and interest movements and not changes in credit quality. Management expects to recover the entire amortized cost basis of these securities.

At March 31, 2019, the Company had unrealized losses of $1.8 million on collateralized loan obligations with a fair value of $238.8 million. The collateral for these securities is first lien senior secured corporate debt. The Company holds senior tranches rated credit A or higher. Management expects to recover the entire amortized cost basis of these securities.

At March 31, 2019, the Company does not intend to sell debt securities that are in an unrealized loss position and it is not more than likely than not that the Company will be required to sell these securities before recovery of the amortized cost basis. Therefore, management does not consider any investment to be other-than-temporarily impaired at March 31, 2019.

Included in other assets at March 31, 2019 is $30.9 million of Federal Home Loan Bank and Federal Reserve Bank stock stated at par value. The Company has not identified events or changes in circumstances which may have a significant adverse effect on the fair value of these cost method investment securities. Also included in other assets is a $6.3 million investment in a mutual fund carried at fair value.

The Company holds 11,330 shares of Visa Class B stock, which following resolution of Visa litigation will be converted to Visa Class A shares. Under the current conversion ratio that became effective June 28, 2018, the Company would receive 1.6298 shares of Class A stock for each share of Class B stock for a total of 18,466 shares of Visa Class A stock. Our ownership of Visa stock is related to prior ownership in Visa's network, while Visa operated as a cooperative. This ownership is recorded on our financial records at zero basis.

Note E – Loans

Information pertaining to portfolio loans, purchased credit impaired (“PCI”) loans, and purchased unimpaired loans (“PUL”) is as follows:

14

	March 31, 2019
(In thousands)	Portfolio Loans		PCI Loans		PULs		Total
Construction and land development	$	308,846	$	153	$	108,566	$	417,565
Commercial real estate	1,478,955		10,393		673,069		2,162,417
Residential real estate	1,077,523		2,575		249,068		1,329,166
Commercial and financial	606,179		667		106,033		712,879
Consumer	195,719		—		10,695		206,414
Totals1	$	3,667,222	$	13,788	$	1,147,431	$	4,828,441

	December 31, 2018
(In thousands)	Portfolio Loans		PCI Loans		PULs		Total
Construction and land development	$	301,473	$	151	$	141,944	$	443,568
Commercial real estate	1,437,989		10,828		683,249		2,132,066
Residential real estate	1,055,525		2,718		266,134		1,324,377
Commercial and financial	603,057		737		118,528		722,322
Consumer	190,207		—		12,674		202,881
Totals1	$	3,588,251	$	14,434	$	1,222,529	$	4,825,214
1Net loan balances as of March 31, 2019 and December 31, 2018 include deferred costs of $17.8 million and $16.9 million for each period, respectively.

The following tables present the contractual delinquency of the recorded investment by class of loans as of:

15

	March 31, 2019
(In thousands)	Current		Accruing 30-59 Days Past Due		Accruing 60-89 Days Past Due		Accruing Greater Than 90 Days		Nonaccrual		Total Financing Receivables
Portfolio Loans
Construction and land development	$	308,819	$	—	$	—	$	—	$	27	$	308,846
Commercial real estate	1,471,607		1,016		709		255		5,368		1,478,955
Residential real estate	1,068,869		612		65		—		7,977		1,077,523
Commercial and financial	599,068		3,724		1,350		81		1,956		606,179
Consumer	194,672		529		423		—		95		195,719
Total Portfolio Loans	3,643,035		5,881		2,547		336		15,423		3,667,222
Purchased Unimpaired Loans
Construction and land development	108,566		—		—		—		—		108,566
Commercial real estate	671,195		536		—		—		1,338		673,069
Residential real estate	246,583		1,288		—		428		769		249,068
Commercial and financial	104,229		—		—		—		1,804		106,033
Consumer	10,664		—		—		—		31		10,695
Total PULs	1,141,237		1,824		—		428		3,942		1,147,431
Purchased Credit Impaired Loans
Construction and land development	138		—		—		—		15		153
Commercial real estate	9,395		—		—		—		998		10,393
Residential real estate	558		—		—		—		2,017		2,575
Commercial and financial	649		—		—		—		18		667
Consumer	—		—		—		—		—		—
Total PCI Loans	10,740		—		—		—		3,048		13,788
Total Loans	$	4,795,012	$	7,705	$	2,547	$	764	$	22,413	$	4,828,441

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	December 31, 2018
(In thousands)	Current		Accruing 30-59 Days Past Due		Accruing 60-89 Days Past Due		Accruing Greater Than 90 Days		Nonaccrual		Total Financing Receivables
Portfolio Loans
Construction and land development	$	301,348	$	97	$	—	$	—	$	28	$	301,473
Commercial real estate	1,427,413		3,852		97		141		6,486		1,437,989
Residential real estate	1,044,375		2,524		525		295		7,806		1,055,525
Commercial and financial	594,930		5,186		1,661		—		1,280		603,057
Consumer	189,061		637		326		—		183		190,207
Total Portfolio Loans	3,557,127		12,296		2,609		436		15,783		3,588,251
Purchased Unimpaired Loans
Construction and land development	140,013		1,931		—		—		—		141,944
Commercial real estate	680,060		1,846		—		—		1,343		683,249
Residential real estate	260,781		1,523		—		90		3,740		266,134
Commercial and financial	116,173		342		—		—		2,013		118,528
Consumer	12,643		—		31		—		—		12,674
Total PULs	1,209,670		5,642		31		90		7,096		1,222,529
Purchased Credit Impaired Loans
Construction and land development	135		—		—		—		16		151
Commercial real estate	8,403		1,034		—		—		1,391		10,828
Residential real estate	556		—		—		—		2,162		2,718
Commercial and financial	74		635		—		—		28		737
Consumer	—		—		—		—		—		—
Total PCI Loans	9,168		1,669		—		—		3,597		14,434
Total Loans	$	4,775,965	$	19,607	$	2,640	$	526	$	26,476	$	4,825,214

The Company's Credit Risk Management also utilizes an internal asset classification system as a means of identifying problem and potential problem loans. The following classifications are used to categorize loans under the internal classification system:

• Pass: Loans that are not problem loans or potential problem loans are considered to be pass-rated.

• Special Mention: Loans that do not currently expose the Company to sufficient risk to warrant classification in the Substandard or Doubtful categories, but possess weaknesses that deserve management's close attention are deemed to be Special Mention.

• Substandard: Loans with the distinct possibility that the Company will sustain some loss if the deficiencies are not corrected.

• Doubtful: Loans that have all the weaknesses inherent in those classified Substandard with the added characteristic that the weakness present makes collection or liquidation in full, on the basis of currently existing facts, conditions and values, highly questionable and improbable. The principal balance of loans classified as doubtful are likely to be charged off.

Risk ratings on commercial lending facilities are re-evaluated during the annual review process at a minimum, based on the size of the aggregate exposure, and/or when there is a credit action of the existing credit exposure. The following tables present the risk category of loans by class based on the most recent analysis performed as of:

17

	March 31, 2019
(In thousands)	Pass		Special Mention		Substandard		Doubtful		Total
Construction and land development	$	406,010	$	11,262	$	293	$	—	$	417,565
Commercial real estate	2,080,415		57,732		24,270		—		2,162,417
Residential real estate	1,304,847		3,953		20,366		—		1,329,166
Commercial and financial	696,837		9,013		7,029		—		712,879
Consumer	202,187		3,150		1,077		—		206,414
Totals	$	4,690,296	$	85,110	$	53,035	$	—	$	4,828,441

	December 31, 2018
(In thousands)	Pass		Special Mention		Substandard		Doubtful		Total
Construction and land development	$	428,044	$	10,429	$	5,095	$	—	$	443,568
Commercial real estate	2,063,589		41,429		27,048		—		2,132,066
Residential real estate	1,296,634		3,654		24,089		—		1,324,377
Commercial and financial	707,663		8,387		6,247		25		722,322
Consumer	198,367		3,397		1,117		—		202,881
Totals	$	4,694,297	$	67,296	$	63,596	$	25	$	4,825,214

PCI Loans

PCI loans are accounted for pursuant to ASC Topic 310-30. The excess of cash flows expected to be collected over the estimated fair value is referred to as the accretable yield and is recognized in interest income over the remaining life of the loan in situations where there is a reasonable expectation about the timing and amount of cash flows expected to be collected. The difference between the contractually required payments and the cash flows expected to be collected at acquisition, considering the impact of prepayments, is referred to as the non-accretable difference.

The table below summarizes the changes in accretable yield on PCI loans for the periods ended:

	Three Months Ended March 31,
(In thousands)	2019			2018
Beginning balance	$	2,924		$	3,699
Additions	—			—
Deletions	—			(43		)
Accretion	(776		)	(443		)
Reclassification from non-accretable difference	460			339
Ending balance	$	2,608		$	3,552

Troubled Debt Restructured Loans

The Company’s Troubled Debt Restructuring (“TDR”) concessions granted to certain borrowers generally do not include forgiveness of principal balances, but may include interest rate reductions, an extension of the amortization period and/or converting the loan to interest only for a limited period of time. Loan modifications are not reported in calendar years after modification if the loans were modified at an interest rate equal to the yields of new loan originations with comparable risk and the loans are performing based on the terms of the restructured agreements. Most loans prior to modification were classified as impaired and the allowance for loan losses is determined in accordance with Company policy.

During the three months ended March 31, 2019, two loans were modified in a TDR totaling $2.0 million. There were no loans modified in a TDR during the three months ended March 31, 2018. No accruing loans that were restructured within the twelve months preceding March 31, 2019 defaulted during the twelve months ended March 31, 2019.The Company considers a loan to have defaulted when it becomes 90 days or more delinquent under the modified terms, has been transferred to nonaccrual status,

18

or has been transferred to other real estate owned. A defaulted TDR is generally placed on nonaccrual and a specific allowance for loan loss is assigned in accordance with the Company’s policy.

Impaired Loans

Loans are considered impaired if they are 90 days or more past due, in nonaccrual status, or are TDRs. As of March 31, 2019 and December 31, 2018, the Company’s recorded investment in impaired loans, excluding PCI loans, the unpaid principal balance and related valuation allowance was as follows:

	March 31, 2019
(In thousands)	Recorded Investment		Unpaid Principal Balance		Related Valuation Allowance
Impaired Loans with No Related Allowance Recorded:
Construction and land development	$	15	$	221	$	—
Commercial real estate	5,136		6,406		—
Residential real estate	10,294		14,873		—
Commercial and financial	2,036		3,103		—
Consumer	146		158		—
Impaired Loans with an Allowance Recorded:
Construction and land development	183		197		20
Commercial real estate	9,624		12,791		353
Residential real estate	5,688		5,820		577
Commercial and financial	2,024		2,020		1,329
Consumer	256		268		91
Total Impaired Loans
Construction and land development	198		418		20
Commercial real estate	14,760		19,197		353
Residential real estate	15,982		20,693		577
Commercial and financial	4,060		5,123		1,329
Consumer	402		426		91
Totals	$	35,402	$	45,857	$	2,370

19

	December 31, 2018
(In thousands)	Recorded Investment		Unpaid Principal Balance		Related Valuation Allowance
Impaired Loans with No Related Allowance Recorded:
Construction and land development	$	15	$	229	$	—
Commercial real estate	3,852		5,138		—
Residential real estate	13,510		18,111		—
Commercial and financial	1,191		1,414		—
Consumer	280		291		—
Impaired Loans with an Allowance Recorded:
Construction and land development	196		211		22
Commercial real estate	9,786		12,967		369
Residential real estate	5,537		5,664		805
Commercial and financial	2,131		2,309		1,498
Consumer	202		211		34
Total Impaired Loans
Construction and land development	211		440		22
Commercial real estate	13,638		18,105		369
Residential real estate	19,047		23,775		805
Commercial and financial	3,322		3,723		1,498
Consumer	482		502		34
Totals	$	36,700	$	46,545	$	2,728

Impaired loans also include TDRs where concessions have been granted to borrowers who have experienced financial difficulty. At March 31, 2019 and at December 31, 2018, accruing TDRs totaled $14.9 million and $13.3 million, respectively.

Average impaired loans for the three months ended March 31, 2019 and 2018 were $36.3 million and $31.1 million, respectively. The impaired loans were measured for impairment based on the value of underlying collateral or the present value of expected future cash flows discounted at the loan’s effective interest rate. The valuation allowance is included in the allowance for loan losses.

Interest payments received on impaired loans are recorded as interest income unless collection of the remaining recorded investment is doubtful, at which time payments received are recorded as reductions in principal. For the three months ended March 31, 2019, and 2018, the Company recorded interest income on impaired loans of $0.4 million and $0.4 million, respectively.

For impaired loans whose impairment is measured based on the present value of expected future cash flows, interest income represents the change in present value attributable to the passage of time, and totaled $35,000 and $88,000, for the three months ended March 31, 2019 and 2018, respectively.

Note F – Allowance for Loan Losses

Activity in the allowance for loan losses for the three month periods ended March 31, 2019 and 2018 is summarized as follows:

20

	Three Months Ended March 31, 2019
(In thousands)	Beginning Balance		Provision for Loan Losses			Charge- Offs			Recoveries		TDR Allowance Adjustments			Ending Balance
Construction & land development	$	2,233	$	83		$	—		$	4	$	—		$	2,320
Commercial real estate	11,112		625			(16		)	47		(15		)	11,753
Residential real estate	7,775		(414		)	(36		)	139		(19		)	7,445
Commercial and financial	8,585		853			(944		)	79		—			8,573
Consumer	2,718		250			(483		)	247		(1		)	2,731
Totals	$	32,423	$	1,397		$	(1,479	)	$	516	$	(35	)	$	32,822

	Three Months Ended March 31, 2018
(In thousands)	Beginning Balance		Provision for Loan Losses			Charge- Offs			Recoveries		TDR Allowance Adjustments			Ending Balance
Construction & land development	$	1,642	$	411		$	—		$	5	$	—		$	2,058
Commercial real estate	9,285		(575		)	—			147		(15		)	8,842
Residential real estate	7,131		788			—			200		(72		)	8,047
Commercial and financial	7,297		270			(198		)	24		—			7,393
Consumer	1,767		191			(307		)	128		(1		)	1,778
Totals	$	27,122	$	1,085		$	(505	)	$	504	$	(88	)	$	28,118

The allowance for loan losses is comprised of specific allowances for certain impaired loans and general allowances grouped into loan pools based on similar characteristics. The Company’s loan portfolio, excluding PCI loans, and related allowance at March 31, 2019 and December 31, 2018 is shown in the following tables:

	March 31, 2019
	Individually Evaluated for Impairment				Collectively Evaluated for Impairment				Total
(In thousands)	Recorded Investment		Associated Allowance		Recorded Investment		Associated Allowance		Recorded Investment		Associated Allowance
Construction & land development	$	197	$	20	$	417,215	$	2,300	$	417,412	$	2,320
Commercial real estate	14,760		353		2,137,264		11,400		2,152,024		11,753
Residential real estate	15,982		577		1,310,609		6,868		1,326,591		7,445
Commercial and financial	4,061		1,329		708,151		7,244		712,212		8,573
Consumer	402		91		206,012		2,640		206,414		2,731
Totals	$	35,402	$	2,370	$	4,779,251	$	30,452	$	4,814,653	$	32,822

	December 31, 2018
	Individually Evaluated for Impairment				Collectively Evaluated for Impairment				Total
(In thousands)	Recorded Investment		Associated Allowance		Recorded Investment		Associated Allowance		Recorded Investment		Associated Allowance
Construction & land development	$	211	$	22	$	443,206	$	2,211	$	443,417	$	2,233
Commercial real estate	13,638		369		2,107,600		10,743		2,121,238		11,112
Residential real estate	19,047		805		1,302,612		6,970		1,321,659		7,775
Commercial and financial	3,322		1,498		718,263		7,087		721,585		8,585
Consumer	482		34		202,399		2,684		202,881		2,718
Totals	$	36,700	$	2,728	$	4,774,080	$	29,695	$	4,810,780	$	32,423

21

Loans collectively evaluated for impairment reported at March 31, 2019 included acquired loans that are not PCI loans. At March 31, 2019, the remaining fair value adjustments for loans acquired was approximately $43.8 million, or approximately 3.8% of the outstanding aggregate PUL balances. At December 31, 2018, the remaining fair value adjustments for loans acquired was approximately $47.0 million, or 3.9% of the outstanding aggregate PUL balances. These amounts are accreted into interest income over the remaining lives of the related loans on a level yield basis.

The table below summarizes PCI loans that were individually evaluated for impairment based on expected cash flows at March 31, 2019 and December 31, 2018:

	March 31, 2019				December 31, 2018
	PCI Loans Individually Evaluated for Impairment
(In thousands)	Recorded Investment		Associated Allowance		Recorded Investment		Associated Allowance
Construction & land development	$	153	$	—	$	151	$	—
Commercial real estate	10,393		—		10,828		—
Residential real estate	2,575		—		2,718		—
Commercial and financial	667		—		737		—
Consumer	—		—		—		—
Totals	$	13,788	$	—	$	14,434	$	—

Note G – Securities Sold Under Agreements to Repurchase

Securities sold under agreements to repurchase are accounted for as secured borrowings. For securities sold under agreements to repurchase, the Company is obligated to provide additional collateral in the event of a significant decline in fair value of collateral pledged. Company securities sold under agreements to repurchase and securities pledged were as follows by collateral type and maturity as of: 

(In thousands)	March 31, 2019		December 31, 2018
Fair value of pledged securities - overnight and continuous:
Mortgage-backed securities and collateralized mortgage obligations of U.S. Government Sponsored Entities	$	148,005	$	214,323

Note H – Lease Commitments

The Company is the lessee in various noncancellable operating leases for land, buildings, and equipment. Certain leases contain provisions for variable lease payments that are linked to the consumer price index. Lease cost for the three months ended March 31, 2019 consists of:

	Three Months Ended
(In thousands)	March 31, 2019
Operating lease cost	$	1,405
Variable lease cost	306
Short-term lease cost	229
Sublease income	(128		)
Total lease cost	$	1,812

The following table provides supplemental information related to leases as of and for the three months ended March 31, 2019:

22

(In thousands, except for weighted average data)	March 31, 2019
Operating lease right-of-use assets	$	28,052
Operating lease liabilities	32,270
Cash paid for amounts included in the measurement of operating lease liabilities	1,512
Right-of-use assets obtained in exchange for new operating lease obligations	—
Weighted average remaining lease term for operating leases	9 years
Weighted average discount rate for operating leases	4.69		%

The Company’s lease agreements often include one or more options to renew at the Company’s discretion. If, at lease inception, the Company considers the exercising of a renewal option to be reasonably certain, the Company includes the extended term in the calculation of the lease liability. Maturities of lease liabilities as of March 31, 2019 are as follows:

(In thousands)
Twelve Months Ended March 31,
2020	$	5,902
2021	5,114
2022	4,698
2023	3,907
2024	3,445
Thereafter	17,027
Total undiscounted cash flows	40,093
Less: Net present value adjustment	(7,823		)
Total	$	32,270

Note I – Noninterest Income and Expense

Detail of noninterest income and expenses for the three months ended March 31, 2019 and 2018 are as follows:

23

	Three Months Ended March 31,
(In thousands)	2019			2018
Noninterest income
Service charges on deposit accounts	$	2,697		$	2,672
Trust fees	1,017			1,021
Mortgage banking fees	1,115			1,402
Brokerage commissions and fees	436			359
Marine finance fees	362			573
Interchange income	3,401			2,942
BOLI income	915			1,056
SBA gains	636			734
Other income	2,266			1,639
	12,845			12,398
Securities losses, net	(9		)	(102		)
Total	$	12,836		$	12,296
Noninterest expense
Salaries and wages	$	18,506		$	15,381
Employee benefits	4,206			3,081
Outsourced data processing costs	3,845			3,679
Telephone/data lines	811			612
Occupancy	3,807			3,117
Furniture and equipment	1,757			1,457
Marketing	1,132			1,252
Legal and professional fees	2,847			1,973
FDIC assessments	488			598
Amortization of intangibles	1,458			989
Foreclosed property expense and net (gain)/loss on sale	(40		)	192
Other	4,282			4,833
Total	$	43,099		$	37,164

Note J – Equity Capital

The Company is well capitalized and at March 31, 2019, the Company and the Company’s principal banking subsidiary, Seacoast Bank, exceeded the common equity Tier 1 capital ratio (CET1) regulatory threshold of 6.5% for well-capitalized institutions under the Basel III standardized transition approach, as well as risk-based and leverage ratio requirements for well capitalized banks under the regulatory framework for prompt corrective action.

Note K – Contingent Liabilities

The Company and its subsidiaries, because of the nature of their business, are at all times subject to numerous legal actions, threatened or filed. Management presently believes that none of the legal proceedings to which it is a party are likely to have a materially adverse effect on the Company’s consolidated financial condition, or operating results or cash flows.

Note L – Fair Value

Under ASC Topic 820, fair value measurements for items measured at fair value on a recurring and nonrecurring basis at March 31, 2019 and December 31, 2018 included:

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(In thousands)	Fair Value Measurements		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
March 31, 2019
Available for sale debt securities1	$	877,549	$	100	$	877,449	$	—
Loans held for sale2	13,900		—		13,900		—
Loans3	8,312		—		2,102		6,210
Other real estate owned4	11,921		—		313		11,608
Equity securities5	6,283		6,283		—		—
December 31, 2018
Available for sale debt securities1,5	$	865,831	$	100	$	865,731	$	—
Loans held for sale2	11,873		—		11,873		—
Loans3	8,590		—		2,290		6,300
Other real estate owned4	12,802		—		297		12,505
Equity securities5	6,205		6,205		—		—
1See Note D for further detail of fair value of individual investment categories.
2Recurring fair value basis determined using observable market data.
3See Note E. Nonrecurring fair value adjustments to loans identified as impaired reflect full or partial write-downs that are based on the loan’s observable market price or current appraised value of the collateral in accordance with ASC Topic 310.
4Fair value is measured on a nonrecurring basis in accordance with ASC Topic 360.
5An investment in shares of a mutual fund that invests primarily in CRA-qualified debt securities, reported at fair value in Other Assets. Recurring fair value basis is determined using market quotations.

Available for sale debt securities: U.S. Treasury securities are reported at fair value utilizing Level 1 inputs. Other securities are reported at fair value utilizing Level 2 inputs. The estimated fair value of a security is determined based on market quotations when available or, if not available, by using quoted market prices for similar securities, pricing models or discounted cash flow analyses, using observable market data where available.

The Company reviews the prices supplied by independent pricing services, as well as their underlying pricing methodologies, for reasonableness and to ensure such prices are aligned with traditional pricing matrices. The fair value of collateralized loan obligations is determined from broker quotes. From time to time, the Company will validate, on a sample basis, prices supplied by the independent pricing service by comparison to prices obtained from other brokers and third-party sources or derived using internal models.

Loans held for sale: Fair values are based upon estimated values to be received from independent third party purchasers. These loans are intended for sale and the Company believes that the fair value is the best indicator of the resolution of these loans. Interest income is recorded based on the contractual terms of the loan and in accordance with the Company’s policy on loans held for investment. None of the loans are 90 days or more past due or on nonaccrual as of March 31, 2019 and December 31, 2018. The aggregate fair value and contractual balance of loans held for sale as of March 31, 2019 and December 31, 2018 is as follows:

(In thousands)	March 31, 2019		December 31, 2018
Aggregate fair value	$	13,900	$	11,873
Contractual balance	13,399		11,562
Excess	501		311

Loans: Level 2 loans consist of impaired real estate loans which are collateral dependent. Fair value is based on recent real estate appraisals less estimated costs of sale. For residential real estate impaired loans, appraised values or internal evaluations are based on the comparative sales approach. Level 3 loans consist of commercial and commercial real estate impaired loans. For these loans evaluations may use either a single valuation approach or a combination of approaches, such as comparative sales, cost and/or

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income approach. A significant unobservable input in the income approach is the estimated capitalization rate for a given piece of collateral. At March 31, 2019, the capitalization rates utilized to determine fair value of the underlying collateral averaged approximately 7.6%. Adjustments to comparable sales may be made by an appraiser to reflect local market conditions or other economic factors and may result in changes in the fair value of an asset over time. As such, the fair value of these impaired loans is considered level 3 in the fair value hierarchy. Impaired loans measured at fair value total $8.3 million with a specific reserve of $2.4 million at March 31, 2019, compared to $8.6 million with a specific reserve of $2.7 million at December 31, 2018.

For loans classified as level 3, the changes included additions of $1.2 million related to loans that became impaired during 2019, offset by paydowns and chargeoffs of $1.3 million for the three months ended March 31, 2019.

Other real estate owned: When appraisals are used to determine fair value and the appraisals are based on a market approach, the fair value of other real estate owned (“OREO”) is classified as a level 2 input. When the fair value of OREO is based on appraisals which require significant adjustments to market-based valuation inputs or apply an income approach based on unobservable cash flows, the fair value of OREO is classified as Level 3.

For OREO classified as level 3 during the three months ended March 31, 2019, changes included reductions primarily consisting of sales of $1.3 million offset by the addition of foreclosed loans of $0.4 million.

Transfers between levels of the fair value hierarchy are recognized on the actual date of the event or circumstances that caused the transfer, which generally coincides with the Company’s monthly and/or quarter-end valuation process. There were no such transfers for loans and OREO classified as level 3 during the three months ended March 31, 2019 and 2018.

The carrying amount and fair value of the Company’s other financial instruments that were not disclosed previously in the balance sheet and for which carrying amount is not fair value as of March 31, 2019 and December 31, 2018 is as follows:

(In thousands)	Carrying Amount		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
March 31, 2019
Financial Assets
Debt securities held to maturity1	$	295,485	$	—	$	291,340	$	—
Time deposits with other banks	8,174		—		—		8,105
Loans, net	4,787,307		—		—		4,760,789
Financial Liabilities
Deposit liabilities	5,605,578		—		—		5,603,019
Federal Home Loan Bank (FHLB) borrowings	3,000		—		—		3,000
Subordinated debt	70,874		—		61,039		—
December 31, 2018
Financial Assets
Debt securities held to maturity1	$	357,949	$	—	$	349,895	$	—
Time deposits with other banks	8,243		—		—		8,132
Loans, net	4,784,201		—		—		4,835,248
Financial Liabilities
Deposit liabilities	5,177,240		—		—		5,172,098
Federal Home Loan Bank (FHLB) borrowings	380,000		—		—		380,027
Subordinated debt	70,804		—		61,224		—
1See Note D for further detail of individual investment categories.

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The short maturity of Seacoast’s assets and liabilities results in having a significant number of financial instruments whose fair value equals or closely approximates carrying value. Such financial instruments are reported in the following balance sheet captions: cash and due from banks, interest bearing deposits with other banks, and securities sold under agreements to repurchase, maturing within 30 days.

The following methods and assumptions were used to estimate the fair value of each class of financial instrument for which it is practicable to estimate that value at March 31, 2019 and December 31, 2018:

Held to maturity debt securities: These debt securities are reported at fair value utilizing Level 2 inputs. The estimated fair value of a security is determined based on market quotations when available or, if not available, by using quoted market prices for similar securities, pricing models or discounted cash flow analyses, using observable market data where available.

The Company reviews the prices supplied by independent pricing services, as well as their underlying pricing methodologies, for reasonableness and to ensure such prices are aligned with traditional pricing matrices. The fair value of collateralized loan obligations is determined from broker quotes. From time to time, the Company will validate, on a sample basis, prices supplied by the independent pricing service by comparison to prices obtained from other brokers and third-party sources or derived using internal models.

Loans: Fair values are estimated for portfolios of loans with similar financial characteristics. Loans are segregated by type such as commercial or mortgage. Each loan category is further segmented into fixed and adjustable rate interest terms as well as performing and nonperforming categories. The fair value of loans is calculated by discounting scheduled cash flows through the estimated life including prepayment considerations, using estimated market discount rates that reflect the risks inherent in the loan. The fair value approach considers market-driven variables including credit related factors and reflects an “exit price” as defined in ASC 820.

Deposit Liabilities: The fair value of demand deposits, savings accounts and money market deposits is the amount payable at the reporting date. The fair value of fixed maturity certificates of deposit is estimated using the rates currently offered for funding of similar remaining maturities.

Note M – Business Combinations

Acquisition of First Green Bancorp, Inc.

On October 19, 2018, the Company completed its acquisition of First Green Bancorp, Inc (“First Green”). Simultaneously, upon completion of the merger of First Green and the Company, First Green's wholly owned subsidiary bank, First Green Bank was merged with and into Seacoast Bank. Prior to the acquisition, First Green operated seven branches in the Orlando, Daytona, and Fort Lauderdale markets.

As a result of this acquisition, the Company expects to enhance its presence in the Orlando, Daytona, and Fort Lauderdale markets, expand its customer base and leverage operating cost through economies of scale, and positively affect the Company’s operating results to the extent the Company earns more from interest earning assets than it pays in interest on its interest bearing liabilities.

The Company acquired 100% of the outstanding common stock of First Green. Under the terms of the definitive agreement, each share of First Green common stock was converted into the right to receive 0.7324 shares of Seacoast common stock.

(In thousands, except per share data)	October 19, 2018
Shares exchanged for cash	$	5,462
Per share exchange ratio	0.7324
Number of shares of common stock issued	4,000
Multiplied by common stock price per share on October 19, 2018	$	26.87
Value of common stock issued	107,486
Cash paid for First Green vested stock options	6,558
Total purchase price	$	114,044

The acquisition of First Green was accounted for under the acquisition method in accordance with ASC Topic 805, Business Combinations. The Company recognized goodwill of $56.7 million for this acquisition that is nondeductible for tax purposes. The

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fair values initially assigned to assets acquired and liabilities assumed are preliminary and could change for up to one year after the closing date of the acquisition as new information and circumstances relative to closing date fair values are known. Determining fair values of assets and liabilities, especially the loan portfolio, core deposit intangibles, and deferred taxes, is a complicated process involving significant judgment regarding methods and assumptions used to calculate estimated fair values. The adjustments reflected in the table below are the result of information obtained subsequent to the initial measurement.

(In thousands)	Initially Measured October 19, 2018		Measurement Period Adjustments			As Adjusted October 19, 2018
Assets:
Cash	$	29,434	$	—		$	29,434
Investment securities	32,145		—			32,145
Loans, net	631,497		—			631,497
Fixed assets	16,828		—			16,828
Other real estate owned	410		—			410
Core deposit intangibles	10,170		(678		)	9,492
Goodwill	56,198		506			56,704
Other assets	40,669		172			40,841
Totals	$	817,351	$	—		$	817,351
Liabilities:
Deposits	$	624,289	$	—		$	624,289
Other liabilities	79,018		—			79,018
Totals	$	703,307	$	—		$	703,307

The table below presents information with respect to the fair value of acquired loans, as well as their unpaid principal balance (“Book Balance”) at acquisition date.

	October 19, 2018
(In thousands)	Book Balance		Fair Value
Loans:
Single family residential real estate	$	101,674	$	101,119
Commercial real estate	437,767		406,613
Construction/development/land	61,195		58,385
Commercial loans	56,288		54,973
Consumer and other loans	9,156		8,942
Purchased Credit Impaired	2,136		1,465
Total acquired loans	$	668,216	$	631,497

For the loans acquired we first segregated all acquired loans with specifically identified credit deficiency factors. The factors we considered to identify loans as PCI loans were all acquired loans that were nonaccrual, 60 days or more past due, designated as TDR, graded “special mention” or “substandard.” These loans were then evaluated to determine estimated fair values as of the acquisition date. As required by generally accepted accounting principles, we are accounting for these loans pursuant to ASC Topic 310-30. The table below summarizes the total contractually required principal and interest cash payments, management’s estimate of expected total cash payments and fair value of the loans as of October 19, 2018 for purchased credit impaired loans. Contractually required principal and interest payments have been adjusted for estimated prepayments.

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(In thousands)	October 19, 2018
Contractually required principal and interest	$	2,136
Non-accretable difference	(671		)
Cash flows expected to be collected	1,465
Accretable yield	—
Total purchased credit-impaired loan acquired	$	1,465

Loans without specifically identified credit deficiency factors are referred to as PULs for disclosure purposes. These loans were then evaluated to determine estimated fair values as of the acquisition date. Although no specific credit deficiencies were identifiable, we believe there is an element of risk as to whether all contractual cash flows will be eventually received. Factors that were considered included the economic environment both nationally and locally as well as the real estate market particularly in Florida. We have applied ASC Topic 310-20 accounting treatment to the PULs.

The Company believes the deposits assumed from the acquisition have an intangible value. In determining the valuation amount, deposits were analyzed based on factors such as type of deposit, deposit retention, interest rates and age of deposit relationships.

Pro-Forma Information

Pro-forma data for the three months ended March 31, 2018 presents information as if the acquisition of First Green occurred at the beginning of 2018, as follows:

	Three Months Ended March 31,
(In thousands, except per share amounts)	2018
Net interest income	$	57,416
Net income	22,065
EPS - basic	$	0.43
EPS - diluted	0.43

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Item 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

The purpose of this discussion and analysis is to aid in understanding significant changes in the financial condition of Seacoast Banking Corporation of Florida and its subsidiaries (the “Company”) and their results of operations. Nearly all of the Company’s operations are contained in its banking subsidiary, Seacoast Bank (“Seacoast Bank” or the “Bank”). Such discussion and analysis should be read in conjunction with the Company’s Condensed Consolidated Financial Statements and the related notes included in this report.

The emphasis of this discussion will be on the three months ended March 31, 2019 compared to the three months ended March 31, 2018 for the consolidated statements of income. For the consolidated balance sheets, the emphasis of this discussion will be the balances as of March 31, 2019 compared to December 31,2018.

This discussion and analysis contains statements that may be considered “forward-looking statements” as defined in, and subject to the protections of the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. See the following section for additional information regarding forward-looking statements.

For purposes of the following discussion, the words the “Company”, “we”, “us”, and “our” refer to the combined entities of Seacoast Banking Corporation of Florida and its direct and indirect wholly owned subsidiaries.

Special Cautionary Notice Regarding Forward-Looking Statements

Certain statements made or incorporated by reference herein which are not statements of historical fact, including those under “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and elsewhere herein, are “forward-looking statements” within the meaning and protections of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended (the “Exchange Act”). Forward-looking statements include statements with respect to our beliefs, plans, objectives, goals, expectations, anticipations, assumptions, estimates, intentions and future performance, and involve known and unknown risks, uncertainties and other factors, which may be beyond our control, and which may cause the actual results, performance or achievements of Seacoast Banking Corporation of Florida (“Seacoast” or the “Company”) or its wholly-owned banking subsidiary, Seacoast National Bank ("Seacoast Bank") to be materially different from those set forth in the forward-looking statements.

All statements other than statements of historical fact are statements that could be forward-looking statements. You can identify these forward-looking statements through our use of words such as “may”, “will”, “anticipate”, “assume”, “should”, “support”, “indicate”, “would”, “believe”, “contemplate”, “expect”, “estimate”, “continue”, “further”, “plan”, “point to”, “project”, “could”, “intend”, “target” or other similar words and expressions of the future. These forward-looking statements may not be realized due to a variety of factors, including, without limitation.

• the effects of current and future economic, business and market conditions in the United States generally or in the communities we serve;

• changes in governmental monetary and fiscal policies, including interest rate policies of the Board of Governors of the Federal Reserve System (the “Federal Reserve”);

• legislative and regulatory changes, including changes in banking, securities and tax laws and regulations and their application by our regulators, including those associated with the Dodd Frank Wall Street Reform and Consumer Protection Act (the “Dodd-Frank Act”) and changes in the scope and cost of Federal Deposit Insurance Corporation (“FDIC”) insurance and other coverage;

• changes in accounting policies, rules and practices and applications or determinations made thereunder, as may be adopted by the bank regulatory agencies, the Financial Accounting Standards Board (the “FASB”), the Securities and Exchange Commission (the “Commission” or “SEC”), and the Public Company Accounting Oversight Board (the “PCAOB”);

• the risks of changes in interest rates on the levels, composition and costs of deposits, including the risk of losing customer checking and savings account deposits as customers pursue other, high-yield investments, which could increase our funding costs;

• the risks of changes in interest rates on loan demand, and the values and liquidity of loan collateral, debt securities, and interest sensitive assets and liabilities;

• changes in borrower credit risks and payment behaviors;

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• changes in the availability and cost of credit and capital in the financial markets;

• changes in the prices, values and sales volumes of residential and commercial real estate in the United States and in the communities we serve, which could impact write-downs of assets, our ability to liquidate non-performing assets, realized losses on the disposition of non-performing assets and increased credit losses;

• our ability to comply with any requirements imposed on us or our banking subsidiary, Seacoast Bank by regulators and the potential negative consequences that may result;

• the effects of problems encountered by other financial institutions that adversely affect us or the banking industry generally could require us to change certain business practices, reduce our revenue, impose additional costs on us, or otherwise negatively affect our businesses;

• our concentration in commercial real estate loans;

• the failure of assumptions and estimates, as well as differences in, and changes to, economic, market and credit conditions, including changes in borrowers’ credit risks and payment behaviors from those used in our loan portfolio stress test;

• the effects of competition from a wide variety of local, regional, national and other traditional and non-traditional providers of financial, investment and insurance services;

• the failure of assumptions and estimates underlying the establishment of reserves for possible loan losses and other estimates;

• the impact on the valuation of our investments due to market volatility or counterparty payment risk;

• statutory and regulatory restrictions on our ability to pay dividends to our shareholders;

• any applicable regulatory limits on Seacoast Bank’s ability to pay dividends to us;

• increases in regulatory capital requirements for banking organizations generally, which may adversely affect our ability to expand our business or could cause us to shrink our business;

• the risks of mergers, acquisitions and divestitures, including, without limitation, the related time and costs of implementing such transactions, integrating operations as part of these transactions and possible failures to achieve expected gains, revenue growth and/or expense savings from such transactions;

• our ability to continue to identify acquisition targets and successfully acquire desirable financial institutions to sustain our growth, to expand our presence in our markets and to enter new markets;

• changes in technology or products that may be more difficult, costly, or less effective than anticipated;

• our ability to identify and address increased cybersecurity risks, including data security breaches, malware, "denial of service" attacks, "hacking", and identity theft, a failure of which could result in potential business disruptions or financial losses;

• inability of our risk management framework to manage risks associated with our business such as credit risk and operational risk, including third party vendors and other service providers;

• dependence on key suppliers or vendors to obtain equipment or services for our business on acceptable terms;

• reduction in or the termination of our ability to use the mobile-based platform that is critical to our business growth strategy, including a failure in or breach of our operational or security systems or those of its third party service providers;

• the effects of war or other conflicts, acts of terrorism, natural disasters or other catastrophic events that may affect general economic conditions;

• unexpected outcomes of, and the costs associated with, existing or new litigation involving us;

• our ability to maintain adequate internal controls over financial reporting;

• potential claims, damages, penalties, fines and reputational damage resulting from pending or future litigation, regulatory proceedings and enforcement actions;

• the risks that our deferred tax assets could be reduced if estimates of future taxable income from our operations and tax planning strategies are less than currently estimated and sales of our capital stock could trigger a reduction in the amount of net operating loss carryforwards that we may be able to utilize for income tax purposes; and

• other factors and risks described under “Risk Factors” herein and in any of our subsequent reports filed with the SEC and available on its website at www.sec.gov.

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All written or oral forward-looking statements that are made by us or are attributable to us are expressly qualified in their entirety by this cautionary notice. We assume no obligation to update, revise or correct any forward-looking statements that are made from time to time, either as a result of future developments, new information or otherwise, except as may be required by law.

First Quarter 2019

Vision 2020 Update

We remain confident in our ability to achieve our Vision 2020 targets announced in 2017.

	Vision 2020 Targets
Return on Tangible Assets	1.30% +
Return on Tangible Common Equity	16% +
Efficiency Ratio	Below 50%

First Quarter Operating Highlights

Modernizing How We Sell

• In the first quarter, we completed a pilot program for automated fulfillment of small business loan products. The pilot was limited to a select group of products, and offers auto-decisioning and digitized onboarding. Once fully implemented, this technology will significantly reduce the cost to originate small business loans to current customers, while maintaining our strict credit underwriting culture.

Lowering Our Cost to Serve

• We consolidated one banking center location in the first quarter in alignment with our Vision 2020 objective of reducing our footprint to meet the evolving needs of our customers. We expect a six-month payback period, and recorded $0.2 million in associated expenses. We have two additional banking center consolidations planned in 2019. We expect negligible customer impact given the proximity to other banking centers and increased usage of digital channels by these customers.

• At quarter end, average deposits per banking center exceeded $112 million, up from $96 million in the first quarter of 2018.

• During the second quarter of 2019, our continued focus on efficiency and streamlining operations will result in a reduction of approximately 50 full time equivalent employees. While the Company will incur severance charges of approximately $1.5 million, this in combination with other expense initiatives, including two more banking center closures will result in $10 million in pre-tax expense reductions annually.

Driving Improvements in How Our Business Operates

• Late in 2018, we launched a large-scale initiative to implement a fully digital loan origination platform across all business banking units. This follows the successful rollout of our fully digital mortgage banking origination platform. This investment will provide financial returns through a significant improvement in efficiency and banker productivity in 2020 and beyond.

Scaling and Evolving Our Culture

• We continue to invest in business bankers. In the first quarter we on-boarded 10 new business bankers in order to fully support the strong markets we serve and to advance our growth and operating leverage objectives. We have a robust pipeline of talent as we enter the second quarter and will continue to opportunistically add top-tier bankers in both the South Florida and Tampa markets.

• In the first quarter of 2019, Seacoast Bank’s 401(k) plan was recognized as a Best in Class 401(k) Plan for 2019 by PLANSPONSOR magazine. Associate participation in the 401(k) plan and Seacoast's contribution match differentiates us from industry peers.

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Results of Operations

Earnings Overview

First Quarter 2019 Results

We remain confident in our ability to achieve our Vision 2020 targets announced at our Investor Day in early 2017. These include a return on tangible assets of 1.30%+, a return on tangible common equity of 16%+, and an efficiency ratio below 50%. For the first quarter of 2019, Seacoast reported net income of $22.7 million, or $0.44 per average common diluted share, compared to $16.0 million, or $0.31, for the prior quarter and $18.0 million, or $0.38, for the first quarter of 2018. Adjusted net income¹ (a non-GAAP measure) for the first quarter of 2019 totaled $24.2 million, or $0.47, per average common diluted share, compared to $23.9 million, or $0.47, for the prior quarter and $19.3 million, or $0.40, for the first quarter of 2018.

	First		Fourth		First
	Quarter		Quarter		Quarter
	2019		2018		2018
Return on average tangible assets	1.48	%	1.05	%	1.34	%
Return on average tangible shareholders' equity	14.86		10.94		14.41
Efficiency ratio	56.55		65.76		57.80
Adjusted return on average tangible assets1	1.50	%	1.49	%	1.38	%
Adjusted return on average tangible shareholders' equity1	15.11		15.44		14.82
Adjusted efficiency ratio1	55.81		54.19		57.05
1Non-GAAP measure. See the reconciliation of net income to adjusted net income.

For the three months ended March 31, 2019, our adjusted return on average tangible assets¹ and adjusted return on average tangible shareholders' equity¹ improved when compared to the same period in the prior year. This improvement is the result of higher adjusted net income¹ in the current year to date period, partially offset by higher tangible assets and higher tangible shareholders' equity. The improvement in the adjusted efficiency ratio¹ reflects our disciplined expense control and focus on increasing revenue.

Net Interest Income and Margin

Net interest income (on a fully taxable equivalent basis) for the quarter totaled $60.9 million, increasing $0.8 million or 1% during the first quarter of 2019 compared to prior quarter, and was $11.0 million or 22% higher than first quarter of 2018. Net interest margin was 4.02% in the first quarter 2019, compared to 4.00% in the fourth quarter 2018 and 3.80% in the first quarter 2018. The net interest margin continues to benefit from positive remixing of interest earning assets as well as actions taken to reduce reliance on wholesale Federal Home Loan Bank advances and migrate funding towards lower rate deposit balances during the quarter.

Loan growth, balance sheet mix and increases in benchmark interest rates have been the primary forces affecting net interest income and net interest margin results. Acquisitions have further accelerated these trends. Organic loan growth of $299.8 million, or 8%, since March 31, 2018, plus the addition of $631.5 million in loans from the First Green merger contributed to the net interest income improvement year over year for the first quarter ended March 31, 2019. Net interest income for 2019 should continue to benefit from the impact of the First Green acquisition completed on October 19, 2018.

The following table details the trend for net interest income and margin results (on a tax equivalent basis, a non-GAAP measure), the yield on earning assets and the rate paid on interest bearing liabilities for the periods specified:

¹Non-GAAP measure. See the reconciliation of net income to adjusted net income.

(In thousands, except ratios)	Net Interest Income1		Net Interest Margin1		Yield on Earning Assets1		Rate on Interest Bearing Liabilities
First quarter 2019	$	60,861	4.02	%	4.79	%	1.13	%
Fourth quarter 2018	60,100		4.00	%	4.67	%	0.97	%
First quarter 2018	49,853		3.80	%	4.23	%	0.62	%
1On tax equivalent basis, a non-GAAP measure. See the reconciliation of net interest income to net interest income on a tax equivalent basis.

For the three months ended March 31, 2019, a steepening of the Treasury yield curve and higher short term rates, including add-on rates for new loan production, contributed to the 22 basis point improvement in net interest margin, compared to the firstthree months of 2018. Our loan and debt securities yields were 48 and 30 basis points higher, respectively, and our yield on federal funds sold and other investments was 36 basis points lower, compared to results for the three months ended March 31, 2018. The impact on net interest margin from accretion of purchase discounts on acquired loans was 26 basis points in the first quarter of 2019. Partially offsetting, the rate for interest bearing funding was higher by 51 basis points, when comparing the same three-month periods for 2019 and 2018.

Total average loans increased $966.7 million, or 25%, for first quarter 2019 compared to first quarter 2018, and increased $227.4 million, or 5%, from the fourth quarter of 2018. Average debt securities decreased $181.0 million, or 13%, for first quarter 2019 year over year and were $44.0 million, or 3%, lower from the fourth quarter of 2018.

Average loans as a percentage of average earning assets totaled 79% during the first quarter of 2019, compared to 77% during the fourth quarter of 2018 and 73% a year ago. As average total loans as a percentage of earning assets increased, the mix of loans has remained fairly stable, with volumes related to commercial real estate representing 49% of total loans at March 31, 2019 and December 31, 2018 and 47% at March 31, 2018 (see “Loan Portfolio”).

Loan production is detailed in the following table for the periods specified:

	First		Fourth		First
	Quarter		Quarter		Quarter
(In thousands)	2019		2018		2018
Commercial pipeline	$	177,318	$	164,064	$	122,743
Commercial loans closed	109,076		159,388		122,064
Residential pipeline	45,284		43,655		70,755
Residential loans retained	49,645		73,201		79,053
Residential loans sold	32,558		31,525		49,687
Consumer and small business pipeline	67,591		53,453		50,361
Consumer and small business originations	118,503		114,195		98,381

Consumer and small business originations reached $118.5 million during the first quarter of 2019 and commercial loans closed totaled $109.1 million for the first quarter of 2019. The increase in consumer and small business loan originations is attributable, in part, to our commitment to serving small businesses and the expansion of our Small Business Administration ("SBA") program. Closed residential loans during the first quarter for 2019 totaled $82.2 million.

Pipelines (loans in underwriting and approval or approved and not yet closed) remained strong at $177.3 million in commercial, $45.3 million in mortgage, and $67.6 million (a new peak) in consumer and small business at March 31, 2019. Commercial pipelines increased $13.3 million over December 31, 2018, and were $54.6 million or 44% higher compared to March 31, 2018. Residential pipelines increased $1.6 million from December 31, 2018, and were lower by $25.5 million or 36%, compared to March 31, 2018. The consumer and small business pipeline increased from December 31, 2018 by $14.1 million or 26%, and increased from March 31, 2018 by $17.2 million or 34%.

Loan production remains strong, supported by customer analytics and expansion of the banking teams. During the first quarter of 2019, we hired 10 business bankers in Tampa and Ft. Lauderdale, augmenting the 10 business bankers hired in the fourth quarter of 2018. The addition of lending personnel from the First Green acquisition is providing growth as well.

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Customer relationship funding is detailed in the following table for the periods specified:

Customer Relationship Funding
	March 31,			December 31,			September 30,			June 30,			March 31,
(In thousands, except ratios)	2019			2018			2018			2018			2018
Noninterest demand	$	1,676,009		$	1,569,602		$	1,488,689		$	1,463,652		$	1,488,261
Interest-bearing demand	1,100,477			1,014,032			912,891			976,281			1,015,054
Money market	1,192,070			1,173,950			1,036,940			1,023,170			1,035,531
Savings	508,320			493,807			451,958			444,736			437,878
Time certificates of deposit	1,128,702			925,849			753,032			789,601			742,819
Total deposits	$	5,605,578		$	5,177,240		$	4,643,510		$	4,697,440		$	4,719,543
Customer sweep accounts	$	148,005		$	214,323		$	189,035		$	200,050		$	173,249
Noninterest demand deposits as % of total deposits	29.9		%	30.3		%	32.1		%	31.2		%	31.5		%

Seacoast's weighted average rate paid on total deposits (including noninterest demand deposits) was 0.67% for the three months ended March 31, 2019, and, despite an increase of 13 basis points from the fourth quarter of 2018 and 34 basis points from the three months ended March 31, 2018, we believe reflects the significant value of the deposit franchise.

Short-term borrowings were entirely comprised of sweep repurchase agreements with Seacoast Bank customers at March 31, 2019 and 2018. No federal funds purchased were utilized at March 31, 2019 or 2018. The average rate on customer repurchase accounts was 1.21% for the three months ended March 31, 2019, compared to 0.63% for the same period during 2018.

FHLB borrowings totaled $3.0 million at March 31, 2019, with an average rate of 2.53% paid during the three months ended March 31, 2019. FHLB borrowings averaged $227.4 million for the first quarter of 2019, declining $49.0 million, or 18%, compared to the three months ended March 31, 2018. For 2019, average subordinated debt of $70.8 million related to trust preferred securities issued by subsidiary trusts of the Company carried an average cost of 5.14%.

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The following table details average balances, net interest income and margin results (on a tax equivalent basis) for the periods presented:  

Average Balances, Interest Income and Expenses, Yields and Rates1
	2019							2018							2018
	First Quarter							Fourth Quarter							First Quarter
	Average					Yield/		Average					Yield/		Average					Yield/
(In thousands, except ratios)	Balance			Interest		Rate		Balance			Interest		Rate		Balance			Interest		Rate
Assets
Earning assets:
Securities:
Taxable	$	1,186,374		$	9,119	3.07	%	$	1,227,648		$	9,528	3.10	%	$	1,361,277		$	9,361	2.75	%
Nontaxable	26,561			190		2.86		29,255			252		3.45		32,640			307		3.76
Total Securities	1,212,935			9,309		3.07		1,256,903			9,780		3.11		1,393,917			9,668		2.77
Federal funds sold and other investments	91,136			918		4.09		87,146			835		3.80		56,173			616		4.45
Loans, net	4,839,046			62,335		5.22		4,611,691			59,559		5.12		3,872,369			45,284		4.74
Total Earning Assets	6,143,117			72,562		4.79		5,955,740			70,174		4.67		5,322,459			55,568		4.23
Allowance for loan losses	(32,966		)					(33,864		)					(27,469		)
Cash and due from banks	99,940							124,299							113,899
Premises and equipment	70,938							75,120							65,932
Intangible assets	230,066							213,713							167,136
Bank owned life insurance	123,708							132,495							122,268
Other assets	136,175							122,367							87,463
Total Assets	$	6,770,978						$	6,589,870						$	5,851,688
Liabilities and Shareholders' Equity
Interest-bearing liabilities:
Interest-bearing demand	$	1,029,726		$	839	0.33	%	$	974,711		$	515	0.21	%	$	1,001,672		$	450	0.18	%
Savings	500,347			477		0.39		509,434			418		0.33		435,433			104		0.10
Money market	1,158,939			2,557		0.89		1,161,599			2,207		0.75		976,498			984		0.41
Time deposits	1,042,346			4,959		1.93		899,153			3,901		1.72		776,807			2,179		1.14
Federal funds purchased and securities sold under agreements to repurchase	185,032			550		1.21		242,963			732		1.20		175,982			274		0.63
Federal Home Loan Bank borrowings	227,378			1,421		2.53		240,799			1,468		2.42		276,389			1,030		1.51
Other borrowings	70,836			898		5.14		70,764			833		4.67		70,550			694		3.99
Total Interest-Bearing Liabilities	4,214,604			11,701		1.13		4,099,423			10,074		0.97		3,713,331			5,715		0.62
Noninterest demand	1,612,548							1,628,842							1,413,967
Other liabilities	64,262							33,846							29,150
Total Liabilities	5,891,414							5,762,111							5,156,448
Shareholders' equity	879,564							827,759							695,240
Total Liabilities & Equity	$	6,770,978						$	6,589,870						$	5,851,688
Cost of deposits						0.67	%						0.54	%						0.33	%
Interest expense as a % of earning assets						0.77	%						0.67	%						0.44	%
Net interest income as a % of earning assets				$	60,861	4.02	%				$	60,100	4.00	%				$	49,853	3.80	%
1On a fully taxable equivalent basis, a non-GAAP measure, as defined (see non-GAAP measure below). All yields and rates have been computed on an annual basis using amortized cost. Fees on loans have been included in interest on loans. Nonaccrual loans are included in loan balances.

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Taxable Equivalent Measure

Fully taxable equivalent net interest income and net interest margin is a common term and measure used in the banking industry but is not a term used under GAAP. We believe that these presentations of tax equivalent net interest income and tax equivalent net interest margin aid in the comparability of net interest income arising from both taxable and tax-exempt sources over the periods presented. We further believe these non-GAAP measures enhance investors’ understanding of the Company’s business and performance, and facilitate an understanding of performance trends and comparisons with the performance of other financial institutions. The limitations associated with these measures are the risk that persons might disagree as to the appropriateness of items comprising these measures and that different companies might calculate these measures differently, including as a result of using different assumed tax rates. These disclosures should not be considered as an alternative to GAAP. The following information is provided to reconcile GAAP measures and tax equivalent net interest income and net interest margin on a tax equivalent basis.

	First			Fourth			First
	Quarter			Quarter			Quarter
(In thousands, except ratios)	2019			2018			2018
Nontaxable interest income adjustment	$	87		$	116		$	91
Tax Rate	21		%	21		%	21		%
Net interest income (TE)	$	60,861		$	60,100		$	49,853
Total net interest income (not TE)	60,774			59,984			49,762
Net interest margin (TE)	4.02		%	4.00		%	3.80		%
Net interest margin (not TE)	4.01			3.99			3.79
TE = Tax Equivalent

Noninterest Income

Noninterest income totaled $12.8 million for the first quarter of 2019, an increase of $0.1 million, or 1%, compared to the fourth quarter of 2018 and an increase of $0.5 million, or 4%, from the first quarter of 2018. Organic and acquisition-related growth were primary factors contributing to growth in noninterest income. For the three months ended March 31, 2019, noninterest income accounted for 17% of total revenue (net interest income plus noninterest income), compared to 20% for the three months ended March 31, 2018.

Compared to the fourth quarter of 2018, service charges on deposit results were lower by $0.3 million, impacted by fewer business days in the first quarter of 2019, but mortgage banking fees were higher and entirely offsetting, the result of a successful introduction of new saleable residential mortgage products and a focus on generating saleable volume. SBA and marine-related fees improved modestly from the fourth quarter of 2018, the result of higher volumes in both units, and interchange income increased $0.2 million sequentially. Interchange income is dependent upon business volumes transacted, as well as the fees permitted by Visa^® and MasterCard^®. Wealth-related fees (trust and brokerage income) were down modestly, the result of lower equity valuations, and other income declined primarily due to the prior quarter benefiting from a $0.3 million bank owned life insurance ("BOLI") payout. The decline in BOLI-related income from the fourth quarter of 2018 was the result of the cancellation of low yielding policies acquired in the First Green acquisition. Finally, securities losses for the first quarter of 2019 were lower by $0.4 million from the fourth quarter of 2018.

Noninterest income for the first quarter of 2019, compared to the fourth quarter of 2018 and the first quarter of 2018 is detailed as follows:

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	First			Fourth			First
	Quarter			Quarter			Quarter
(In thousands)	2019			2018			2018
Service charges on deposit accounts	$	2,697		$	3,019		$	2,672
Trust fees	1,017			1,040			1,021
Mortgage banking fees	1,115			809			1,402
Brokerage commissions and fees	436			468			359
Marine finance fees	362			185			573
Interchange income	3,401			3,198			2,942
BOLI income	915			1,091			1,056
SBA gains	636			519			734
Other income	2,266			2,810			1,639
	12,845			13,139			12,398
Securities losses, net	(9		)	(425		)	(102		)
Total	$	12,836		$	12,714		$	12,296

Year over year, results for the three months ended March 31, 2019 compared to the three months ended March 31, 2018 reflect growth in deposits and increased customer engagement. Service charges on deposits and interchange income increased by 9%, on a combined basis. This increase reflects continued strength in new customer acquisition and cross sell, and benefits from acquisition activity. Overdraft fees totaling $1.5 million for 2019 represented 55% of total service charges on deposit, the same percentage as a year ago.

Wealth management, including brokerage commissions and fees, and trust fees, continued to grow during the first quarter of 2019, increasing 5% from first quarter 2018. While trust fees were level year over year, brokerage commissions and fees were 21% higher for the three months ended March 31, 2019, compared to the three months ended March 31, 2018. This increase is the result of a growing sales and support team, industry leading products including digital tools, and the benefit of direct referrals from the branches and lending network. We expect wealth management revenues to continue to grow over time.

Mortgage production was lower during the three months ended March 31, 2019 compared to 2018 (see “Loan Portfolio”), with mortgage banking activity generating fees of $1.1 million for the first quarter of 2019 as compared to $1.4 million for the first quarter of 2018. Fee income opportunities were more limited. However, as mentioned previously, the introduction of new saleable residential mortgage products and a focus on generating saleable volume should create income growth prospectively.

Marine lending originations sold were lower for the first quarter 2019, decreasing 37% for the first quarter of 2019 compared to the same period in 2018. Fee income for marine vessel financing was impacted by a larger portion of originations being retained. In addition to our principal marine lending office in Ft. Lauderdale, Florida, we continue to use third party independent contractors in Texas and on the west coast of the United States to assist in generating marine loans.

BOLI and Small Business Administration ("SBA") income totaled $0.9 million and $0.6 million, respectively, for the first quarter of 2019, slightly lower from a year ago, but representing 7% and 5% of overall noninterest income, respectively. Other income was 38% higher year over year for the three months ended March 31, 2019, increasing $0.6 million year over year compared to first quarter 2018. Additional income of $0.2 million was distributed from Community Reinvestment Act ("CRA") investments and a general increase in other fee categories also occurred.

Noninterest Expenses

Seacoast management expects its efficiency ratios to improve in 2019. The Company expects its digital servicing capabilities and technology to support better, more efficient channel integration allowing consumers to choose their path of convenience to satisfy their banking needs. Acquisition activity added to noninterest expenses with acquisition related costs for First Green in the fourth quarter of 2018 of approximately $8.0 million, and an additional $0.3 million during the first quarter of 2019. The Company consolidated five branches in conjunction with the acquisition of First Green, in alignment with our Vision 2020 objective of reducing our footprint to meet the evolving demands of our customers. We consolidated one additional banking center during the first quarter 2019 and recorded $0.2 million in associated expenses, and plan on consolidating two more banking centers in 2019. Our investments in 2018 launched a number of new enhancements, resulting in even greater digital access for our customers, and providing improvements in productivity for our customers in their daily lives. In the second quarter of 2019,

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our continued focus on efficiency and streamlining operations will result in a reduction of approximately 50 full time equivalent employees. While the Company will incur severance charges of approximately $1.5 million, this in combination with other expense initiatives, including the two additional banking center closures planned in 2019, should result in approximately $10 million in pretax expense reductions annually. We expect greater operating leverage in 2020 and beyond.

For the first quarter of 2019, our efficiency ratio, defined as noninterest expense less amortization of intangibles and gains, losses, and expenses on foreclosed properties divided by net operating revenue (net interest income on a fully taxable equivalent basis plus noninterest income excluding securities gains), was 56.55% compared to 65.76% for the fourth quarter of 2018 and 57.80% for the first quarter of 2018. Adjusted noninterest expense (a non-GAAP measure, see table below for a reconciliation to noninterest expense, the most comparable GAAP number) was $41.1 million for the first quarter of 2019, compared to $39.5 million for the fourth quarter of 2018 and $35.5 million for the first quarter of 2018. The adjusted efficiency ratio¹ year over year improved, declining from 57.05% for the first quarter 2018 to 55.81% for the first quarter of 2019.

¹Non-GAAP measure. See the reconciliation of net income to adjusted net income.

	First			Fourth			First
	Quarter			Quarter			Quarter
(In thousands, except ratios)	2019			2018			2018
Noninterest expense, as reported	$	43,099		$	49,464		$	37,164
Merger related charges	(335		)	(8,034		)	(470		)
Amortization of intangibles	(1,458		)	(1,303		)	(989		)
Branch reductions and other expense initiatives1	(208		)	(587		)	—
Foreclosed property expense and net gain/(loss)on sale	40			—			(192		)
Total adjustments	(1,961		)	(9,924		)	(1,651		)
Adjusted noninterest expense2	$	41,138		$	39,540		$	35,513
Adjusted efficiency ratio2,3	55.81		%	54.19		%	57.05		%
1Includes severance payments, contract termination costs, disposition of branch premises and fixed assets, and other costs to accomplish branch consolidation and other expense reduction strategies.
2Non-GAAP measure.
3Efficiency ratio is defined as (noninterest expense less amortization of intangibles and gains, losses, and expenses on foreclosed properties) divided by the net operating revenue (net interest on a fully tax equivalent basis plus noninterest income excluding securities gains).

Noninterest expenses for the first quarter of 2019 totaled $43.1 million, decreasing $6.4 million, or 13%, compared to the fourth quarter of 2018, and increasing $5.9 million, or 16%, from the first quarter of 2018. Noninterest expenses for the first quarter of 2019, as compared to the fourth quarter of 2018 and the first quarter of 2018 are detailed as follows:

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	First			Fourth		First
	Quarter			Quarter		Quarter
(In thousands)	2019			2018		2018
Noninterest expense
Salaries and wages	$	18,506		$	22,172	$	15,381
Employee benefits	4,206			3,625		3,081
Outsourced data processing costs	3,845			5,809		3,679
Telephone/data lines	811			602		612
Occupancy	3,807			3,747		3,117
Furniture and equipment	1,757			2,452		1,457
Marketing	1,132			1,350		1,252
Legal and professional fees	2,847			3,668		1,973
FDIC assessments	488			571		598
Amortization of intangibles	1,458			1,303		989
Foreclosed property expense and net (gain)/loss on sale	(40		)	—		192
Other	4,282			4,165		4,833
Total	$	43,099		$	49,464	$	37,164

Salaries and wages totaled $18.5 million for the first quarter of 2019, $22.2 million for the fourth quarter of 2018 , and $15.4 million for the first quarter of 2018. Salaries and wages were $3.1 million higher year over year, when compared to the three months ended March 31, 2018. Base salaries were the primary cause, increasing $2.6 million, or 19%, with 902 full-time equivalent employees at March 31, 2019, compared to 814 at March 31, 2018. Improved revenue generation and lending production, among other factors, resulted in commissions, cash and stock incentives (aggregated) that were $0.2 million higher year over year. Severance costs also increased by $0.1 million year over year, and deferred loan origination costs (a contra expense) decreased by $0.2 million, due to lower loan production in the first quarter of 2019, compared to the first quarter of 2018.

During the first quarter 2019, employee benefits costs (group health insurance, defined contribution plan, payroll taxes, and unemployment compensation) increased $0.6 million, or 16%, compared to the fourth quarter of 2018, and increased $1.1 million, or 37%, compared to the first quarter of 2018. These costs reflect the higher staffing (and base salary cost) discussed above. Payroll taxes typically peak during first quarter each year, and were $0.6 million and $0.5 million greater than expenditures in the fourth and first quarter of 2018, respectively. Our self-funded health care plan, totaling $1.7 million for the first quarter of 2019, was $0.5 million higher than a year ago for first quarter.

Seacoast Bank utilizes third parties for its core data processing systems and outsourced data processing costs are directly related to the number of transactions processed. Outsourced data processing costs totaled $3.8 million, $5.8 million and $3.7 million for the first quarter 2019, fourth quarter 2018 and first quarter 2018, respectively. Data processing costs included one-time charges for conversion activity related to our acquisition in the fourth quarter of 2018. We continue to improve and enhance our mobile and other digital products and services through our core data processor, which may increase our outsourced data processing costs as customers adopt improvements and products and as the Company's business volumes grow.

Telephone and data line expenditures, including electronic communications with customers and between branch locations and personnel, as well as our third party data processors, increased $0.2 million during the first quarter of 2019, when compared to the fourth quarter of 2018 and the first quarter of 2018, or 35% and 33%, respectively. Additional activity for acquired First Green branches and locations closed, as well as additional customers from the acquisition, were the primary contributors to the increases in telephone and data line expenses.

Total occupancy, furniture and equipment expenses for the three months ended March 31, 2019 decreased $0.6 million, or 10%, from the fourth quarter of 2018, and increased $1.0 million, or 22%, compared to the three months ended March 31, 2018. Asset write-offs related to branch closures was a primary contributor, with write-offs adding $0.2 million and $0.8 million, respectively, to expenses for the three months ended March 31, 2019 and December 31, 2018. We believe branches are still valuable to our customers for more complex transactions, but simple tasks, such as depositing and withdrawing funds, are rapidly migrating to the digital world. We anticipate that branch consolidations will continue for the Company and the banking industry in general. Lease expense was higher for the first quarter of 2019 by approximately $0.3 million, primarily attributed to additional branches acquired from First Green. In addition, at March 31, 2019, the Company's operations center lease expired and all personnel occupying this space moved to an adjacent main campus building currently owned, with an annual lease savings of $0.4 million,

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prospectively. Depreciation, repairs and maintenance, and other furniture and equipment expenditures were higher compared to a year ago, increasing $0.1 million, $0.2 million and $0.2 million, respectively during the first quarter of 2019 when compared to the first quarter of 2018.

For the first quarter of 2019, fourth quarter of 2018 and first quarter of 2018, marketing expenses (including sales promotion costs, ad agency production and printing costs, digital, newspaper, TV and radio advertising, and other public relations costs) totaled $1.1 million, $1.4 million and $1.3 million, respectively. Incremental use of marketing activities to connect and solidify customer acquisition and corporate brand awareness within the Orlando and new Tampa footprint contributed to the higher expenditures in the fourth quarter of 2018.

Legal and professional fees for the first quarter of 2019, fourth quarter of 2018 and first quarter of 2018 totaled $2.8 million, $3.7 million, and $2.0 million, respectively, peaking in the fourth quarter of 2018 when First Green was acquired.

Growth in total assets (both organic and through acquisitions) increased the basis for calculating our Federal Deposit Insurance Corporation ("FDIC") premiums. FICO bonds, issued by the U.S. government to create and support the Resolution Trust Corporation ("RTC"), formed during the savings and loan crisis of the early 1990's, have also been included in quarterly assessments to date, but have been repaid, reducing the assessment for Seacoast by almost $0.2 million annually on a prospective basis. Also, the FDIC's reserves hit 1.36% recently, near a reserve balance of 1.38%, at which time further relief for banks under $10 billion in assets has been mandated by statute in the form of small bank credit awards to be applied to offset quarterly FDIC premium assessments prospectively. The Company's subsidiary bank has approximately $1.6 million of these credit awards that the bank should be able to apply against premiums charged, once the FDIC achieves its 1.38% reserve. FDIC assessments were $0.5 million, $0.6 million and $0.6 million for the first quarter of 2019, fourth quarter of 2018 and first quarter of 2018, respectively.

For the three months ended March 31, 2019 and December 31, 2018, foreclosed property expense and net losses on the sale of OREO properties were nominal, compared to $0.2 million for the first quarter of 2018 (see “Nonperforming Loans, Troubled Debt Restructurings, Other Real Estate Owned, and Credit Quality”).

Other expense totaled $4.3 million, $4.2 million and $4.8 million for the first quarter of 2019, the fourth quarter of 2018 and first quarter of 2018, respectively, and decreased 11% for the three months ended March 31, 2019, compared to the three months ended March 31, 2018. Primary contributors to the $0.5 million decrease year over year were marine lending fees (down $0.1 million compared to a year ago), losses and charge-offs related to robbery, fraud, and other losses (down $0.1 million), and miscellaneous loan costs (down $0.3 million).

Income Taxes

For the three months ended March 31, 2019 and 2018, provision for income taxes totaled $6.4 million and $5.8 million, respectively. The Company’s overall effective tax rate decreased to 22.0% for the first three months of 2019 from 24.3% for the first three months a year ago. Additionally, discrete benefits related to share-based compensation provided a tax benefit of $0.6 million for the three months ended March 31, 2019, compared to $0.2 million for the three months ended March 31, 2018. Offsetting this tax benefit in 2018 for the first quarter was a $0.2 million write down of deferred tax assets arising from measurement period adjustments on a 2017 bank acquisition.

Management believes all of the future tax benefits of the Company’s deferred tax assets can be realized and no valuation allowance is required.

Explanation of Certain Unaudited Non-GAAP Financial Measures

This report contains financial information determined by methods other than Generally Accepted Accounting Principles (“GAAP”), including adjusted net income, tax equivalent net interest income and margin, and adjusted noninterest expense and efficiency ratios. The most directly comparable GAAP measures are net income, net interest income, net interest margin, noninterest expense, and efficiency ratios. Management uses these non-GAAP financial measures in its analysis of the Company’s performance and believes these presentations provide useful supplemental information, and a clearer understanding of the Company’s performance. The Company believes the non-GAAP measures enhance investors’ understanding of the Company’s business and performance and if not provided would be requested by the investor community. These measures are also useful in understanding performance trends and facilitate comparisons with the performance of other financial institutions. The limitations associated with operating measures are the risk that persons might disagree as to the appropriateness of items comprising these measures and that different companies might calculate these measures differently. The Company provides reconciliations between GAAP and these non-GAAP measures. These disclosures should not be considered an alternative to GAAP.  The following table provides reconciliation between GAAP net income and adjusted net income.

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	First			Fourth			First
	Quarter			Quarter			Quarter
(In thousands, except per share data)	2019			2018			2018
Net income, as reported:
Net income	$	22,705		$	15,962		$	18,027
Diluted earnings per share	$	0.44		$	0.31		$	0.38
Adjusted net income:
Net income	$	22,705		$	15,962		$	18,027
Security losses, net	9			425			102
BOLI benefits on death (included in other income)	—			(280		)	—
Total adjustments to revenue	9			145			102
Merger related charges	(335		)	(8,034		)	(470		)
Amortization of intangibles	(1,458		)	(1,303		)	(989		)
Branch reductions and other expense initiatives1	(208		)	(587		)	—
Total adjustments to noninterest expenses	(2,001		)	(9,924		)	(1,459		)
Effective tax rate on adjustments	510			2,623			538
Taxes and tax penalties on acquisition-related BOLI redemption	—			(485		)	—
Tax effect of change in corporate tax rate	—			—			(248		)
Adjusted net income	$	24,205		$	23,893		$	19,298
Adjusted diluted earnings per share	$	0.47		$	0.47		$	0.40
Average Assets	$	6,770,978		$	6,589,870		$	5,851,688
Less average goodwill and intangible assets	(230,066		)	(213,713		)	(167,136		)
Average Tangible Assets	$	6,540,912		$	6,376,157		$	5,684,552
Return on Average Assets (ROA)	1.36		%	0.96		%	1.25		%
Impact of removing average intangible assets and related amortization	0.12			0.09			0.09
Return on Average Tangible Assets (ROTA)	1.48			1.05			1.34
Impact of other adjustments for Adjusted Net Income	0.02			0.44			0.04
Adjusted Return on Average Tangible Assets	1.50			1.49			1.38
Average Shareholders' Equity	$	879,564		$	827,759		$	695,240
Less average goodwill and intangible assets	(230,066		)	(213,713		)	(167,136		)
Average Tangible Equity	$	649,498		$	614,046		$	528,104
Return on Average Shareholders' Equity	10.47		%	7.65		%	10.52		%
Impact of removing average intangible assets and related amortization	4.39			3.29			3.89
Return on Average Tangible Common Equity (ROTCE)	14.86			10.94			14.41
Impact of other adjustments for Adjusted Net Income	0.25			4.50			0.41
Adjusted Return on Average Tangible Common Equity	15.11			15.44			14.82
1Includes severance, contract termination costs, disposition of branch premises and fixed assets, and other costs to effect our branch consolidation and other expense reduction strategies.

Financial Condition

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Total assets increased $35.7 million, or 0.5%, from December 31, 2018, benefiting from new relationships derived through our unique combination of customer analytics, marketing automation, and experienced bankers in growing urban markets.

Securities

Information related to maturities, carrying values and fair value of the Company’s debt securities is set forth in “Note D – Securities” of the Company’s condensed consolidated financial statements, primarily the result of sales during the quarter of low-yielding securities.

At March 31, 2019, the Company had $877.5 million in debt securities available for sale, and $295.5 million in debt securities held to maturity. The Company's total debt securities portfolio decreased $50.7 million, or 4%, from December 31, 2018. In connection with the adoption of ASU 2017-12 in January 2019, the Company elected to transfer securities with an aggregate amortized cost basis of $53.5 million and fair value of $52.8 million from the held-to-maturity designation to available-for-sale.

There were no debt security purchases for the three months ended March 31, 2019 and $27.1 million in maturities (primarily paydowns of $26.1 million) over the same period. For 2018, there were no debt security purchases during the fourth quarter and purchases of $72.3 million in the first quarter, and principal pay-downs for the fourth and first quarters of 2018 were similar in size, equal to $42.9 million and $43.3 million, respectively.

During the three months ended March 31, 2019, $35.0 million of certain low yielding debt securities were sold, which resulted in a loss of $0.1 million. Proceeds from the sale of securities during the fourth quarter of 2018 of $64.4 million included net losses of $0.5 million. In comparison, there were no sales of debt securities transacted in the first quarter of 2018.

Debt securities are generally acquired which return principal monthly. The modified duration of the investment portfolio at March 31, 2019 was 3.7 years, compared to 4.8 years at December 31, 2018.

At March 31, 2019, available for sale debt securities had gross unrealized losses of $8.5 million and gross unrealized gains of $3.5 million, compared to gross unrealized losses of $18.3 million and gross unrealized gains of $1.3 million at December 31, 2018. All of the debt securities with unrealized losses are reviewed for other-than-temporary impairment at least quarterly. As a result of these reviews it was determined that the debt securities with unrealized losses are not other than temporarily impaired and the Company has the intent and ability to retain these debt securities until recovery over the periods presented (see additional discussion under “Other Fair Value Measurements” and “Other than Temporary Impairment of Securities” in “Critical Accounting Policies and Estimates”).

Company management considers the overall quality of the debt securities portfolio to be high. The Company has no exposure to debt securities with subprime collateral. The Company does not have an investment position in trust preferred securities.

The credit quality of the Company’s securities holdings are all investment grade. As of March 31, 2019, the Company’s investment securities, except for $37.5 million of securities issued by states and their political subdivisions, generally are traded in liquid markets. U.S. Treasury and U.S. Government agency obligations totaled $825.8 million, or 70% of the total portfolio. The portfolio also includes $67.9 million in private label securities, most secured by residential real estate collateral originated in 2005 or prior years with low loan to values, and current FICO scores above 700. Generally these securities have credit support exceeding 5%. The collateral underlying these mortgage investments are primarily 30- and 15-year fixed rate, 5/1 and 10/1 adjustable rate mortgage loans. Historically, the mortgage loans serving as collateral for those investments have had minimal foreclosures and losses. The Company also has invested $241.7 million in uncapped 3-month LIBOR floating rate collateralized loan obligations. Collateralized loan obligations are special purpose vehicles that purchase 1st lien sub-investment grade corporate loans while providing support to senior tranche investors. As of March 31, 2019, the Company held 84% in AAA/AA tranches and 16% in A rated tranches with average credit support of 31% and 19%, respectively. The Company performs routine evaluations on these securities to assess both structure and collateral.

Loan Portfolio

Total loans (net of unearned income and excluding the allowance for loan losses) were $4.8 billion at March 31, 2019, $3.2 million more than at December 31, 2018. For the first quarter of 2019, $109.1 million in commercial and commercial real estate loans were originated compared to $159.4 million during the fourth quarter of 2018. Our loan pipeline for commercial and commercial real estate loans totaled $177.3 million at March 31, 2019. The Company also closed $82.2 million in residential loans during the first quarter of 2019. For comparison, residential loans totaling $104.7 million were closed during the fourth quarter of 2018. This is consistent with the Residential Lending team's focus away from portfolio construction lending. The residential mortgage pipeline at March 31, 2019 totaled $45.3 million. Consumer and small business originations totaled $118.5 million since year end 2018,

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higher by $4.3 million compared to the three months ended December 31, 2018, and the pipeline for these loans at March 31, 2019 was $67.6 million, a record high. The First Green acquisition during the fourth quarter of 2018 contributed $631.5 million in loans. Success in commercial lending through continued investment in our business bankers has increased loan growth. We hired 10 business bankers in Fort Lauderdale and Tampa during the first three months of 2019, augmenting the 10 business bankers hired in the fourth quarter of 2018. Adding new, seasoned, commercial loan officers where market opportunities arise should enhance growth opportunities and provide talent enhancements.

We believe that achieving our loan growth objectives, together with the prudent management of credit risk will provide us with the potential to make further, meaningful improvements to our earnings in 2019 and into 2020.

Our strong growth is accompanied by sound risk management procedures. Our lending policies contain numerous guardrails that pertain to lending by type of collateral and purpose, along with limits regarding loan concentrations and the dollar amount (size) of loans. Our exposure to commercial real estate lending is significantly below regulatory limits (see “Loan Concentrations”).

The following tables detail loan portfolio composition at March 31, 2019 and December 31, 2018 for portfolio loans, purchased credit impaired loans (“PCI”) and purchased unimpaired loans (“PUL”) as defined in Note E-Loans. 

	March 31, 2019
(In thousands)	Portfolio Loans		PCI Loans		PULs		Total
Construction and land development	$	308,846	$	153	$	108,566	$	417,565
Commercial real estate1	1,478,955		10,393		673,069		2,162,417
Residential real estate	1,077,523		2,575		249,068		1,329,166
Commercial and financial	606,179		667		106,033		712,879
Consumer	195,719		—		10,695		206,414
Net Loan Balances2	$	3,667,222	$	13,788	$	1,147,431	$	4,828,441

	December 31, 2018
(In thousands)	Portfolio Loans		PCI Loans		PULs		Total
Construction and land development	$	301,473	$	151	$	141,944	$	443,568
Commercial real estate1	1,437,989		10,828		683,249		2,132,066
Residential real estate	1,055,525		2,718		266,134		1,324,377
Commercial and financial	603,057		737		118,528		722,322
Consumer	190,207		—		12,674		202,881
Net Loan Balances2	$	3,588,251	$	14,434	$	1,222,529	$	4,825,214
1Commercial real estate includes owner-occupied balances of $989.2 million and $970.2 million for March 31, 2019 and December 31, 2018, respectively.
2Net loan balances at March 31, 2019 and December 31, 2018 include deferred costs of $17.8 million and $16.9 million, respectively.

Commercial real estate loans were higher by $30.4 million totaling $2.2 billion at March 31, 2019, compared to December 31, 2018. Owner occupied loans represent $989.2 million or 46% of the commercial real estate portfolio. Office building loans of $652.2 million or 30% of commercial real estate mortgages comprise our largest concentration, with a substantial portion owner-occupied. Portfolio composition also includes lending for retail trade, industrial, health care, churches and educational facilities, recreation, multifamily, lodging, agriculture, convenience stores, marinas, and other types of real estate.

The Company’s ten largest commercial and commercial real estate funded and unfunded loan relationships at March 31, 2019 aggregated to $220.5 million (versus $218.6 million at December 31, 2018), of which $154.1 million was funded. The Company’s 127 commercial and commercial real estate relationships in excess of $5 million totaled $1.2 billion, of which $1.0 billion was funded at March 31, 2019 (compared to 128 relationships of $1.3 billion at December 31, 2018, of which $1.0 billion was funded).

Fixed rate and adjustable rate loans secured by commercial real estate, excluding construction loans, totaled approximately $1.6 billion and $525.9 million, respectively, at March 31, 2019, compared to $1.6 billion and $533.4 million, respectively, at December 31, 2018.

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Reflecting more muted production during the quarter, commercial and financial loans (“C&I”) outstanding at March 31, 2019 decreased to $712.9 million, down from $722.3 million at December 31, 2018. Commercial lending activities are directed principally towards businesses whose demand for funds are within the Company’s lending limits, such as small- to medium-sized professional firms, retail and wholesale outlets, and light industrial and manufacturing concerns. Such businesses are smaller and subject to the risks of lending to small- to medium-sized businesses, including, but not limited to, the effects of a downturn in the local economy, possible business failure, and insufficient cash flows.

Residential mortgage loans increased $4.8 million to $1.3 billion as of March 31, 2019, compared to December 31, 2018. Substantially all residential originations have been underwritten to conventional loan agency standards, including loans having balances that exceed agency value limitations. At March 31, 2019, approximately $611.3 million or 46% of the Company’s residential mortgage balances were adjustable 1-4 family mortgage loans (including hybrid adjustable rate mortgages). Fixed rate mortgages totaled approximately $379.4 million (29% of the residential mortgage portfolio) at March 31, 2019, of which 15- and 30-year mortgages totaled $34.9 million and $291.8 million, respectively. Remaining fixed rate balances were comprised of home improvement loans totaling $128.0 million, most with maturities of 10 years or less, and home equity lines of credit, primarily floating rates, totaling $263.1 million at March 31, 2019. In comparison, loans secured by residential properties having fixed rates totaled $370.2 million at December 31, 2018, with 15- and 30-year fixed rate residential mortgages totaling $32.1 million and $276.5 million, respectively, and home equity mortgages and lines of credit totaling $135.8 million and $261.9 million, respectively.

The Company also provides consumer loans (including installment loans, loans for automobiles, boats, and other personal, family and household purposes) which increased $3.5 million, or 2%, from December 31, 2018 to total $206.4 million (versus $201.7 million at December 31, 2018). Of the $3.5 million increase, automobile and truck loans, and marine loans, increased $1.2 million and $3.5 million, respectively, while other consumer loans declined $1.2 million.

At March 31, 2019, the Company had unfunded commitments to make loans of $992.4 million, compared to $982.7 million at December 31, 2018.

Loan Concentrations

The Company has developed guardrails to manage loan types that are most impacted by stressed market conditions in order to achieve lower levels of credit loss volatility in the future. Outstanding balances for commercial and commercial real estate (“CRE”) loan relationships greater than $10 million totaled $465.4 million and represented 10% of the total portfolio at March 31, 2019 compared to $502.1 million or 10% at year-end 2018.

Concentrations in total construction and land development loans and total CRE loans are maintained well below regulatory limits. Construction and land development and CRE loan concentrations as a percentage of total risk based capital, were stable at 57% and 216%, respectively, at March 31, 2019. Regulatory guidance suggests limits of 100% and 300%, respectively. To determine these ratios, the Company defines CRE in accordance with the guidance on “Concentrations in Commercial Real Estate Lending” (the “Guidance”) issued by the federal bank regulatory agencies in 2006 (and reinforced in 2015), which defines CRE loans as exposures secured by land development and construction, including 1-4 family residential construction, multi-family property, and non-farm nonresidential property where the primary or a significant source of repayment is derived from rental income associated with the property (i.e., loans for which 50 percent or more of the source of repayment comes from third party, non-affiliated, rental income) or the proceeds of the sale, refinancing, or permanent financing of the property. Loans to real estate investment trusts, or “REITs”, and unsecured loans to developers that closely correlate to the inherent risks in CRE markets would also be considered CRE loans under the Guidance. Loans on owner occupied CRE are generally excluded.

Nonperforming Loans, Troubled Debt Restructurings, Other Real Estate Owned, and Credit Quality

Nonperforming assets (“NPAs”) at March 31, 2019 totaled $34.3 million, and were comprised of $15.4 million of nonaccrual portfolio loans, $7.0 million of nonaccrual purchased loans, $0.8 million of non-acquired other real estate owned (“OREO”), $1.7 million of acquired OREO and $9.4 million of branches taken out of service. Compared to December 31, 2018, nonaccrual purchased loans decreased $3.7 million and acquired OREO declined $1.3 million, primarily the result of a payoff of a single $3.0 million acquired residential real estate loan and the sale of a single commercial real estate OREO acquired from First Green. Overall, NPAs decreased $5.0 million, or 13%, from $39.3 million recorded as of December 31, 2018. At March 31, 2019, approximately 83% of nonaccrual loans were secured with real estate. See the tables below for details about nonaccrual loans. At March 31, 2019, nonaccrual loans were written down by approximately $7.1 million or 24% of the original loan balance (including specific impairment reserves). Since December 31, 2018, OREO amounts related to branches taken out of service that are actively being marketed, the largest component of OREO totaling $9.4 million, did not change.

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Nonperforming loans to total loans outstanding at March 31, 2019 decreased to 0.46% from 0.55% at December 31, 2018. Nonperforming assets to total assets at March 31, 2019 decreased to 0.51% from 0.58% at December 31, 2018.

The Company’s asset mitigation staff handles all foreclosure actions together with outside legal counsel.

The Company pursues loan restructurings in selected cases where it expects to realize better values than may be expected through traditional collection activities. The Company has worked with retail mortgage customers, when possible, to achieve lower payment structures in an effort to avoid foreclosure. Troubled debt restructurings ("TDRs") have been a part of the Company’s loss mitigation activities and can include rate reductions, payment extensions and principal deferrals. Company policy requires TDRs that are classified as nonaccrual loans after restructuring remain on nonaccrual until performance can be verified, which usually requires six months of performance under the restructured loan terms. Accruing restructured loans totaled $14.9 million at March 31, 2019, compared to $13.3 million at December 31, 2018. Accruing TDRs are excluded from our nonperforming asset ratios. The table below set forth details related to nonaccrual and accruing restructured loans.

	March 31, 2019
	Nonaccrual Loans						Accruing Restructured Loans
(In thousands)	Non-Current		Performing		Total
Construction & land development
Residential	$	—	$	—	$	—	$	—
Commercial	—		—		—		11
Individuals	—		42		42		160
	—		42		42		171
Residential real estate mortgages	2,723		8,041		10,764		6,774
Commercial real estate mortgages	6,266		1,437		7,703		7,432
Real estate loans	8,989		9,520		18,509		14,377
Commercial and financial	2,608		1,170		3,778		180
Consumer	56		70		126		300
	$	11,653	$	10,760	$	22,413	$	14,857

At March 31, 2019 and December 31, 2018, total TDRs (performing and nonperforming) were comprised of the following loans by type of modification:

	March 31, 2019			December 31, 2018
(In thousands)	Number	Amount		Number	Amount
Rate reduction	55	$	12,387	56	$	10,739
Maturity extended with change in terms	44	4,530		48	5,083
Chapter 7 bankruptcies	22	1,218		22	1,275
Not elsewhere classified	9	763		11	966
	130	$	18,898	137	$	18,063

During the three months ended March 31, 2019, two loans were modified in a TDR totaling $2.0 million, compared to $0.2 million for all of 2018. Loan modifications are not reported in calendar years after modification if the loans were modified at an interest rate equal to the yields of new loan originations with comparable risk and the loans are performing based on the terms of the restructuring agreements. No accruing loans that were restructured within the twelve months preceding March 31, 2019 defaulted during the twelve months ended March 31, 2019. A restructured loan is considered in default when it becomes 90 days or more past due under the modified terms, has been transferred to nonaccrual status, or has been transferred to OREO.

At March 31, 2019, loans (excluding PCI) totaling $35.4 million were considered impaired (comprised of total nonaccrual, loans 90 days or more past due, and TDRs) and $2.4 million of the allowance for loan losses was allocated for potential losses on these loans, compared to $36.7 million and $2.7 million, respectively, at December 31, 2018.

In accordance with regulatory reporting requirements, loans are placed on nonaccrual following the Retail Classification of Loan interagency guidance. Typically loans 90 days or more past due are reviewed for impairment, and if deemed impaired, are placed

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on nonaccrual. Once impaired, the current fair market value of the collateral is assessed and a specific reserve and/or charge-off taken. Quarterly thereafter, the loan carrying value is analyzed and any changes are appropriately made as described above.

Cash and Cash Equivalents and Liquidity Risk Management

Liquidity risk involves the risk of being unable to fund assets with the appropriate duration and rate-based liability, as well as the risk of not being able to meet unexpected cash needs. Liquidity planning and management are necessary to ensure the ability to fund operations cost effectively and to meet current and future potential obligations such as loan commitments and unexpected deposit outflows.

Funding sources include primarily customer-based core deposits, collateral-backed borrowings, cash flows from operations, cash flows from our loan and investment portfolios and asset sales (primarily secondary marketing for residential real estate mortgages and marine financings). Cash flows from operations are a significant component of liquidity risk management and we consider both deposit maturities and the scheduled cash flows from loan and investment maturities and payments when managing risk.

The Company does not rely on and is not dependent on off-balance sheet financing or significant amounts of wholesale funding.

Deposits are a primary source of liquidity. The stability of this funding source is affected by numerous factors, including returns available to customers on alternative investments, the quality of customer service levels, perception of safety and competitive forces. We routinely use debt securities and loans as collateral for secured borrowings. In the event of severe market disruptions, we have access to secured borrowings through the FHLB and the Federal Reserve Bank of Atlanta under its borrower-in-custody program.

Cash and cash equivalents (including interest bearing deposits), totaled $204.0 million on a consolidated basis at March 31, 2019, compared to $116.0 million at December 31, 2018. Higher cash and cash equivalent balances at March 31, 2019 reflect seasonality as deposits typically peak in the first quarter, as well as proceeds from the sales of available for sale debt securities, proceeds from the redemption of First Green bank owned life insurance policies redeemed in the fourth quarter of 2018 and settled in the first quarter of 2019, and additional funds held in anticipation of brokered certificates of deposit ("CDs") maturing during the first week of April 2019.

Contractual maturities for assets and liabilities are reviewed to meet current and expected future liquidity requirements. Sources of liquidity, both anticipated and unanticipated, are maintained through a portfolio of high quality marketable assets, such as residential mortgage loans, debt securities available for sale and interest-bearing deposits. The Company is also able to provide short term financing of its activities by selling, under an agreement to repurchase, United States Treasury and Government agency debt securities not pledged to secure public deposits or trust funds. At March 31, 2019, Seacoast Bank had available unsecured lines of $130.0 million and lines of credit under current lendable collateral value, which are subject to change, of $1.4 billion. Seacoast had $473.9 million of United States Treasury and Government agency debt securities and mortgage backed debt securities not pledged and available for use under repurchase agreements, and had an additional $1.0 billion in residential and commercial real estate loans available as collateral. In comparison, at December 31, 2018, Seacoast Bank had available unsecured lines of $130.0 million and lines of credit of $781.7 million, and had $665.7 million of Treasury and Government agency debt securities and mortgage backed debt securities not pledged and available for use under repurchase agreements, as well as an additional $869.8 million in residential and commercial real estate loans available as collateral.

The Company has traditionally relied upon dividends from Seacoast Bank and securities offerings to provide funds to pay the Company’s expenses and to service the Company’s debt. During the first quarter of 2019, Seacoast Bank distributed $3.3 million to the Company and, at March 31, 2019, is eligible to distribute dividends to the Company of approximately $124.0 million without prior approval. At March 31, 2019, the Company had cash and cash equivalents at the parent of approximately $41.6 million, compared to $40.3 million at December 31, 2018.

Deposits and Borrowings

The Company’s balance sheet continues to be primarily funded by core deposits.

Total deposits increased $428.3 million, or 8%, to $5.6 billion at March 31, 2019, compared to December 31, 2018. At March 31, 2019, total deposits excluding brokered CDs grew $281.1 million, or 6%, from year-end 2018.

Since December 31, 2018, interest bearing deposits (interest bearing demand, savings and money market deposits) increased $119.1 million or 4% to $2.8 billion, and CDs (excluding broker CDs) increased $55.6 million or 8% to $760.9 million. Noninterest demand deposits were higher by $106.4 million or 7% compared to year-end 2018, totaling $1.7 billion. Noninterest demand

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deposits represented 30% of total deposits at March 31, 2019 and December 31, 2018. Core deposit growth reflects our success in growing households through our unique capabilities in customer analytics and marketing automation.

During the three months ended March 31, 2019, $134.1 million of brokered CDs at an average rate of 2.19% matured, and the Company acquired $281.3 million in brokered CDs at a weighted average rate of 2.31%. Of the $281.3 million acquired, $231.3 million matures in the second quarter of 2019 and $50.0 million matures in the fourth quarter of 2019. Total brokered CDs at March 31, 2019 totaled $367.8 million compared to $220.6 million at December 31, 2018.

Customer repurchase agreements totaled $148.0 million at March 31, 2019, decreasing $66.3 million or 31% from December 31, 2018. Repurchase agreements are offered by Seacoast to select customers who wish to sweep excess balances on a daily basis for investment purposes. Public funds comprise a significant amount of the outstanding balance.

No unsecured federal funds purchased were outstanding at March 31, 2019.

At March 31, 2019 and December 31, 2018, borrowings were comprised of subordinated debt of $70.9 million and $70.8 million, respectively, related to trust preferred securities issued by trusts organized or acquired by the Company, and borrowings from FHLB of $3.0 million and $380.0 million, respectively. At March 31, 2019, the remaining $3.0 million of FHLB borrowings matures in April 2019. The weighted average rate for FHLB funds during the three months ended March 31, 2019 and 2018 was 2.53% and 1.51%, respectively, and compared to 1.99% for the year ended December 31, 2018. Secured FHLB borrowings are an integral tool in liquidity management for the Company.

The Company issued subordinated debt in conjunction with its wholly owned trust subsidiaries, SBCF Capital Trust I and SBCF Statutory Trust II that were formed in 2005. In 2007, the Company issued additional subordinated debt for its wholly owned trust subsidiary, SBCF Statutory Trust III. The 2005 subordinated debt for each trust totaled $20.6 million (aggregating to $41.2 million) and the 2007 subordinated debt totaled $12.4 million. As part of the October 1, 2014 The BANKshares Inc. acquisition, the Company inherited three junior subordinated debentures totaling $5.2 million, $4.1 million, and $5.2 million, respectively. Also, as part of the Grand acquisition, the Company inherited an additional junior subordinated debenture totaling $7.2 million. The acquired junior subordinated debentures (in accordance with ASC Topic 805 Business Combinations) were recorded at fair value, which collectively is $4.4 million lower than face value at March 31, 2019. This amount is being amortized into interest expense over the acquired subordinated debts’ remaining term to maturity. All trust preferred securities are guaranteed by the Company on a junior subordinated basis.

Under Basel III and Federal Reserve rules, qualified trust preferred securities and other restricted capital elements can be included as Tier 1 capital, within limitations. The Company believes that its trust preferred securities qualify under these capital rules. The weighted average interest rate of our outstanding subordinated debt related to trust preferred securities was 5.14% and 3.99% for the three months ended March 31, 2019 and 2018, respectively, and compared to 4.48% for the year ended December 31, 2018.

Off-Balance Sheet Transactions

In the normal course of business, we may engage in a variety of financial transactions that, under generally accepted accounting principles, either are not recorded on the balance sheet or are recorded on the balance sheet in amounts that differ from the full contract or notional amounts. These transactions involve varying elements of market, credit and liquidity risk.

Lending commitments include unfunded loan commitments and standby and commercial letters of credit. For loan commitments, the contractual amount of a commitment represents the maximum potential credit risk that could result if the entire commitment had been funded, the borrower had not performed according to the terms of the contract, and no collateral had been provided. A large majority of loan commitments and standby letters of credit expire without being funded, and accordingly, total contractual amounts are not representative of our actual future credit exposure or liquidity requirements. Loan commitments and letters of credit expose the Company to credit risk in the event that the customer draws on the commitment and subsequently fails to perform under the terms of the lending agreement.

For commercial customers, loan commitments generally take the form of revolving credit arrangements. For retail customers, loan commitments generally are lines of credit secured by residential property. These instruments are not recorded on the balance sheet until funds are advanced under the commitment. Loan commitments were $992.4 million at March 31, 2019 and $982.7 million at December 31, 2018.

Capital Resources

The Company’s equity capital at March 31, 2019 increased $32.2 million from December 31, 2018 to $896.4 million.

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The ratio of shareholders’ equity to period end total assets was 13.21% and 12.81% at March 31, 2019 and December 31, 2018, respectively. The ratio of tangible shareholders’ equity to tangible assets was 10.18% and 9.72% at March 31, 2019 and December 31, 2018, respectively. Equity has increased as a result of earnings retained by the Company.

Activity in shareholders’ equity for the three months ended March 31, 2019 and 2018 follows:

(In thousands)	2019		2018
Beginning balance at December 31, 2018 and 2017	$	864,267	$	689,664
Net income	22,705		18,027
Stock compensation (net of Treasury shares acquired)	609		2,064
Change in other comprehensive income	8,843		(7,894		)
Ending balance at March 31, 2019 and 2018	$	896,424	$	701,861

Capital ratios are well above regulatory requirements for well-capitalized institutions. Seacoast management's use of risk-based capital ratios in its analysis of the Company’s capital adequacy are “non-GAAP” financial measures. Seacoast management uses these measures to assess the quality of capital and believes that investors may find it useful in their analysis of the Company. The capital measures are not necessarily comparable to similar capital measures that may be presented by other companies (see “Note J – Equity Capital”).

March 31, 2019	Seacoast (Consolidated)		Seacoast Bank		Minimum to be Well- Capitalized1
Total Risk-Based Capital Ratio	15.00	%	14.14	%	10.0	%
Tier 1 Capital Ratio	14.36	%	13.50	%	8.0	%
Common Equity Tier 1 Ratio (CET1)	12.98	%	13.50	%	6.5	%
Leverage Ratio	11.28	%	10.60	%	5.0	%
1For subsidiary bank only

The Company’s total risk-based capital ratio was 15.00% at March 31, 2019, an increase from December 31, 2018’s ratio of 14.43%. Higher earnings have been a primary contributor. At March 31, 2019, the Bank’s leverage ratio (Tier 1 capital to adjusted total assets) was 10.60%, well above the minimum to be well capitalized under regulatory guidelines.

Accumulated other comprehensive income increased $8.8 million during the three months ended March 31, 2019 from December 31, 2018, primarily reflecting the impact of lower interest rates on available for sale securities.

The Company and Seacoast Bank are subject to various general regulatory policies and requirements relating to the payment of dividends, including requirements to maintain adequate capital above regulatory minimums. The appropriate federal bank regulatory authority may prohibit the payment of dividends where it has determined that the payment of dividends would be an unsafe or unsound practice. The Company is a legal entity separate and distinct from Seacoast Bank and its other subsidiaries, and the Company’s primary source of cash and liquidity, other than securities offerings and borrowings, is dividends from its bank subsidiary. Without Office of the Comptroller of the Currency (“OCC”) approval, Seacoast Bank can pay $124.0 million of dividends to the Company.

The OCC and the Federal Reserve have policies that encourage banks and bank holding companies to pay dividends from current earnings, and have the general authority to limit the dividends paid by national banks and bank holding companies, respectively, if such payment may be deemed to constitute an unsafe or unsound practice. If, in the particular circumstances, either of these federal regulators determined that the payment of dividends would constitute an unsafe or unsound banking practice, either the OCC or the Federal Reserve may, among other things, issue a cease and desist order prohibiting the payment of dividends by Seacoast Bank or us, respectively. The board of directors of a bank holding company must consider different factors to ensure that its dividend level is prudent relative to the organization’s financial position and is not based on overly optimistic earnings scenarios such as any potential events that may occur before the payment date that could affect its ability to pay, while still maintaining a strong financial position. As a general matter, the Federal Reserve has indicated that the board of directors of a bank holding company, such as Seacoast, should consult with the Federal Reserve and eliminate, defer, or significantly reduce the bank holding company’s dividends if: (i) its net income available to shareholders for the past four quarters, net of dividends previously paid during that period, is not sufficient to fully fund the dividends; (ii) its prospective rate of earnings retention is not consistent with

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its capital needs and overall current and prospective financial condition; or (iii) it will not meet, or is in danger of not meeting, its minimum regulatory capital adequacy ratios.

The Company has seven wholly owned trust subsidiaries that have issued trust preferred stock. Trust preferred securities from our acquisitions were recorded at fair value when acquired. All trust preferred securities are guaranteed by the Company on a junior subordinated basis. The Federal Reserve’s rules permit qualified trust preferred securities and other restricted capital elements to be included under Basel III capital guidelines, with limitations, and net of goodwill and intangibles. The Company believes that its trust preferred securities qualify under these revised regulatory capital rules and believes that it can treat all $70.9 million of trust preferred securities as Tier 1 capital. For regulatory purposes, the trust preferred securities are added to the Company’s tangible common shareholders’ equity to calculate Tier 1 capital.

The Company’s capital is expected to continue to increase with positive earnings.

Critical Accounting Policies and Estimates

The Company’s consolidated financial statements are prepared in accordance with U.S. generally accepted accounting principles, (“GAAP”), including prevailing practices within the financial services industry. The preparation of consolidated financial statements requires management to make judgments in the application of certain of its accounting policies that involve significant estimates and assumptions. We have established policies and control procedures that are intended to ensure valuation methods are well controlled and applied consistently from period to period. These estimates and assumptions, which may materially affect the reported amounts of certain assets, liabilities, revenues and expenses, are based on information available as of the date of the financial statements, and changes in this information over time and the use of revised estimates and assumptions could materially affect amounts reported in subsequent financial statements. Management, after consultation with the Company’s Audit Committee, believes the most critical accounting estimates and assumptions that involve the most difficult, subjective and complex assessments are:

• the allowance and the provision for loan losses;

• acquisition accounting and purchased loans;

• intangible assets and impairment testing;

• other fair value adjustments;

• other than temporary impairment of debt securities;

• realization of deferred tax assets; and

• contingent liabilities.

The following is a discussion of the critical accounting policies intended to facilitate a reader’s understanding of the judgments, estimates and assumptions underlying these accounting policies and the possible or likely events or uncertainties known to us that could have a material effect on our reported financial information. For more information regarding management’s judgments relating to significant accounting policies and recent accounting pronouncements (see “Note A-Significant Accounting Policies” to the Company’s consolidated financial statements).

Allowance and Provision for Loan Losses – Critical Accounting Policies and Estimates

Management determines the allowance for loan losses by continuously analyzing and monitoring delinquencies, nonperforming loan levels and the outstanding balances for each loan category, as well as the amount of net charge-offs, for estimating losses inherent in its portfolio. While the Company’s policies and procedures used to estimate the allowance for loan losses are considered adequate by management, factors beyond the control of the Company, such as general economic conditions, both locally and nationally, make management’s judgment as to the adequacy of the provision and allowance for loan losses approximate and imprecise (see “Nonperforming Assets”).

The provision for loan losses is the result of a detailed analysis estimating for probable loan losses. The analysis includes the evaluation of impaired and purchased credit impaired loans as prescribed under FASB Accounting Standards Codification (“ASC”) Topic 310, Receivables as well as an analysis of homogeneous loan pools not individually evaluated as prescribed under ASC 450, Contingencies. The provision for loan losses for the first quarter of 2019 was $1.4 million, which compared to $1.1 million for the first quarter of 2018. The Company incurred net charge-offs during the first quarter of 2019 of $1.0 million, and net charge-offs were near zero for the first quarter of 2018. Net charge-offs for the first quarter of 2019 were 0.08% of average loans, and for the four most recent quarters averaged 0.16% of outstanding loans. Delinquency trends remain low, with nonperforming loans decreasing $4.1 million during the quarter ended March 31, 2019 (see section titled “Nonperforming Loans, Troubled Debt Restructurings, Other Real Estate Owned, and Credit Quality”).

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Management continuously monitors the quality of the Company’s loan portfolio and maintains an allowance for loan losses it believes is sufficient to absorb probable losses incurred in the loan portfolio. The allowance for loan losses increased $4.7 million, or 17%, to $32.8 million at March 31, 2019, compared to $28.1 million at March 31, 2018. The allowance for loan and lease losses (“ALLL”) framework has four basic elements: (1) specific allowances for loans individually evaluated for impairment; (2) general allowances for pools of homogeneous non-purchased loans (“portfolio loans”) within the portfolio that have similar risk characteristics, which are not individually evaluated; (3) specific allowances for purchased impaired loans which are individually evaluated based on the loan's expected principal and interest cash flows; and (4) general allowances for purchased unimpaired pools of homogeneous loans that have similar risk characteristics. The aggregate of these four components results in our total ALLL.

The first component of the ALLL analysis involves the estimation of an allowance specific to individually evaluated impaired portfolio loans, including accruing and non-accruing restructured commercial and consumer loans. In this process, a specific allowance is established for impaired loans based on an analysis of the most probable sources of repayment, including discounted cash flows, liquidation or operation of the collateral, or the market value of the loan itself. It is the Company’s policy to charge off any portion of the loan deemed uncollectible. Restructured consumer loans are also evaluated and included in this element of the estimate. As of March 31, 2019, the specific allowance related to impaired portfolio loans individually evaluated totaled $2.4 million, and compared to $2.7 million at March 31, 2018. Residential loans that become 90 days past due are placed on nonaccrual and a specific allowance is made for any loan that becomes 120 days past due. Residential loans are subsequently written down if they become 180 days past due and such write-downs are supported by a current appraisal, consistent with current banking regulations.

The second component of the ALLL analysis, the general allowance for homogeneous portfolio loan pools not individually evaluated, is determined by applying factors to pools of loans within the portfolio that have similar risk characteristics. The general allowance is determined by applying a migration model to portfolio segments that allows us to observe performance over time, and to separately analyze sub-segments based in vintage, risk rating, and origination tactics. Adjustments may be made to baseline reserves for some of the loan pools based on an assessment of internal and external influences on credit quality not fully reflected in the historical loss experience. These influences may include elements such as changes in concentration, macroeconomic conditions, and/or recent observable asset quality trends. Our analysis of the adequacy of the allowance for loan losses also takes into account qualitative factors such as credit quality, loan concentrations, internal controls, audit results, staff turnover, local market conditions, employment levels and loan growth.

The third component consists of amounts reserved for purchased credit-impaired ("PCI") loans. On a quarterly basis, the Company updates the amount of loan principal and interest cash flows expected to be collected, incorporating assumptions regarding default rates, loss severities, the amounts and timing of prepayments and other factors that are reflective of current market conditions. Probable decreases in expected loan cash flows trigger the recognition of impairment, which is then measured as the present value of the expected principal loss plus any related foregone interest cash flows discounted at the pool’s effective interest rate. Impairments that occur after the acquisition date are recognized through the provision for loan losses. Probable and significant increases in expected principal cash flows would first reverse any previously recorded allowance for loan losses; any remaining increases are recognized prospectively as interest income. The impacts of (i) prepayments, (ii) changes in variable interest rates, and (iii) any other changes in the timing of expected cash flows are recognized prospectively as adjustments to interest income. Disposals of loans, which may include sales of loans, receipt of payments in full by the borrower, or foreclosure, result in removal of the loan from the PCI portfolio.

The final component consists of amounts reserved for purchased unimpaired loans ("PUL"). Loans collectively evaluated for impairment reported at March 31, 2019 include loans acquired from acquisitions that are not PCI loans. These loans are performing loans recorded at estimated fair value at the acquisition date. Fair value discount amounts are accreted into income over the remaining lives of the related loans on a level yield basis.

The allowance as a percentage of portfolio loans outstanding (excluding PCI and PUL loans) was 0.89% at March 31, 2019, no change compared to December 31, 2018. The risk profile of the loan portfolio reflects adherence to credit management methodologies to execute a low risk strategic plan for loan growth. New loan production is focused on residential real estate loans, owner-occupied commercial real estate, small business loans for professionals and businesses, as well as consumer lending. Strategies, processes and controls are in place to ensure that new production is well underwritten and maintains a focus on smaller, diversified and lower-risk lending.

Concentrations of credit risk, discussed under the caption “Loan Portfolio” of this discussion and analysis, can affect the level of the allowance and may involve loans to one borrower, an affiliated group of borrowers, borrowers engaged in or dependent upon the same industry, or a group of borrowers whose loans are predicated on the same type of collateral. At March 31, 2019, the Company had $1.3 billion in loans secured by residential real estate and $2.2 billion in loans secured by commercial real estate,

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representing 28% and 45% of total loans outstanding, respectively. In addition, the Company is subject to a geographic concentration of credit because it only operates in Florida.

It is the practice of the Company to ensure that its charge-off policy meets or exceeds regulatory minimums. Losses on unsecured consumer loans are recognized at 90 days past due, compared to the regulatory loss criteria of 120 days. In compliance with Federal Financial Institution Examination Council guidelines, secured consumer loans, including residential real estate, are typically charged-off or charged down between 120 and 180 days past due, depending on the collateral type. Commercial loans and real estate loans are typically placed on nonaccrual status when principal or interest is past due for 90 days or more, unless the loan is both secured by collateral having realizable value sufficient to discharge the debt in-full and the loan is in process of collection. Secured loans may be charged-down to the estimated value of the collateral with previously accrued unpaid interest reversed. Subsequent charge-offs may be required as a result of changes in the market value of collateral or other repayment prospects. Initial charge-off amounts are based on valuation estimates derived from appraisals, broker price opinions, or other market information. Generally, new appraisals are not received until the foreclosure process is completed; however, collateral values are evaluated periodically based on market information and incremental charge-offs are recorded if it is determined that collateral values have declined from their initial estimates.

While it is the Company’s policy to charge off in the current period loans for which a loss is considered probable, there are additional risks of future losses that cannot be quantified precisely or attributed to particular loans or classes of loans. Because these risks include the state of the economy, borrower payment behaviors and local market conditions as well as conditions affecting individual borrowers, management’s judgment of the allowance is necessarily approximate and imprecise. The allowance is also subject to regulatory examinations and determinations as to adequacy, which may take into account such factors as the methodology used to calculate the ALLL and the size of the ALLL in comparison to a group of peer companies identified by the regulatory agencies.

Management has established a transition oversight committee responsible for implementing the allowance guidance set forth under

ASU 2016-13, Financial Instruments –Credit Losses (Topic 326). Development of accounting policies and business processes is currently underway and will be established in time for the Company to adopt the new guidance on January 1, 2020. The Company may recognize an increase in the allowance for credit losses upon adoption, recorded as a one-time cumulative adjustment to retained earnings. However, the magnitude of the impact on the Company's consolidated financial statements has not yet been determined.

Note F to the financial statements (titled “Allowance for Loan Losses”) summarizes the Company’s allocation of the allowance for loan losses to construction and land development loans, commercial and residential estate loans, commercial and financial loans, and consumer loans, and provides more specific detail regarding charge-offs and recoveries for each loan component and the composition of the loan portfolio at March 31, 2019 and December 31, 2018.

Acquisition Accounting and Purchased Loans – Critical Accounting Policies and Estimates

The Company accounts for its acquisitions under ASC Topic 805, Business Combinations, which requires the use of the acquisition method of accounting. All identifiable assets acquired, including loans, are recorded at fair value. No allowance for loan losses related to the acquired loans is recorded on the acquisition date as the fair value of the loans acquired incorporates assumptions regarding credit risk. All loans acquired are recorded at fair value in accordance with the fair value methodology prescribed in ASC Topic 820, Fair Value Measurement. The fair value estimates associated with the loans include estimates related to expected prepayments and the amount and timing of expected principal, interest and other cash flows.

Over the life of the PCI loans acquired, the Company continues to estimate cash flows expected to be collected. The Company evaluates at each balance sheet date whether the present value of the acquired loans using the effective interest rates has decreased and if so, recognizes a provision for loan loss in its consolidated statement of income. For any increases in cash flows expected to be collected, the Company adjusts the amount of accretable yield recognized on a prospective basis over the loan’s remaining life.

Intangible Assets and Impairment Testing – Critical Accounting Policies and Estimates

Intangible assets consist of goodwill and core deposit intangibles. Goodwill represents the excess purchase price over the fair value of net assets acquired in business acquisitions. The core deposit intangible represents the excess intangible value of acquired deposit customer relationships as determined by valuation specialists. Core deposit intangibles are amortized on a straight-line basis, and are evaluated for indications of potential impairment at least annually. Goodwill is not amortized but rather is evaluated for impairment on at least an annual basis. We performed an annual impairment test of goodwill as required by ASC Topic 350, Intangibles—Goodwill and Other, in the fourth quarter of 2018. Seacoast conducted the test internally, documenting the impairment

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test results, and concluded that no impairment occurred. Goodwill was not recorded for the Grand acquisition (on July 17, 2015) that resulted in a bargain purchase gain; however a core deposit intangible was recorded.

Fair value estimates for acquired assets and assumed liabilities are based on the information available, and are subject to change for up to one year after the closing date of the acquisition as additional information relative to closing date fair values becomes available.

Other Fair Value Measurements – Critical Accounting Policies and Estimates

“As Is” values are used to measure fair market value on impaired loans, OREO and repossessed assets. All impaired loans, OREO and repossessed assets are reviewed quarterly to determine if fair value adjustments are necessary based on known changes in the market and/or the project assumptions.  When necessary, the “As Is” appraised value may be adjusted based on more recent appraisal assumptions received by the Company on other similar properties, the tax assessed market value, comparative sales and/or an internal valuation. Collateral dependent impaired loans are loans where repayment is solely dependent on the liquidation of the collateral or operation of the collateral for repayment.  If an updated assessment is deemed necessary and an internal valuation cannot be made, an external “As Is” appraisal will be requested. Upon receipt of the “As Is” appraisal a charge-off is recognized for the difference between the loan amount and its current fair market value.

The fair value of the available for sale securities portfolio at March 31, 2019 was less than historical amortized cost, producing net unrealized losses of $5.0 million that have been included in other comprehensive income (loss) as a component of shareholders’ equity (net of taxes). The Company made no change to the valuation techniques used to determine the fair values of securities during 2019 and 2018. The fair value of each security available for sale was obtained from independent pricing sources utilized by many financial institutions or from dealer quotes. The fair value of many state and municipal securities are not readily available through market sources, so fair value estimates are based on quoted market price or prices of similar instruments. Generally, the Company obtains one price for each security. However, actual values can only be determined in an arms-length transaction between a willing buyer and seller that can, and often do, vary from these reported values. Furthermore, significant changes in recorded values due to changes in actual and perceived economic conditions can occur rapidly, producing greater unrealized losses or gains in the available for sale portfolio.

During 2014, management identified $158.8 million of investment securities available for sale and transferred them to held for investment. The unrealized holding losses at the date of transfer totaled $3.1 million. For the securities that were transferred into the held for investment category from the available for sale category, the unrealized holding losses at the date of the transfer will continue to be reported in other comprehensive income, and will be amortized over the remaining life of the security as an adjustment of yield in a manner consistent with the amortization of a discount. At March 31, 2019, the remaining unamortized amount of these losses was $0.6 million. The amortization of unrealized holding losses reported in equity will offset the effect on interest income of the amortization of the discount. Management believes the securities transferred are a core banking asset that they now intend to hold until maturity, and if interest rates were to increase before maturity, the fair values would be impacted more significantly and therefore are not consistent with the characteristics of an available for sale investment.

The Company also holds 11,330 shares of Visa Class B stock, which following resolution of Visa's litigation will be converted to Visa Class A shares. Under the current conversion rate that became effective June 28, 2018, the Company expects to receive 1.6298 shares of Class A stock for each share of Class B stock, for a total of 18,465 shares of Visa Class A stock. Our ownership of Visa stock is related to prior ownership in Visa’s network, while Visa operated as a cooperative. This ownership is recorded on our financial records at a zero basis. Also included in other assets is a $6.3 million investment in a CRA related mutual fund carried at fair value.

Other Than Temporary Impairment of Debt Securities – Critical Accounting Policies and Estimates

Seacoast reviews investments quarterly for other than temporary impairment (“OTTI”). The following primary factors are considered for securities identified for OTTI testing: percent decline in fair value, rating downgrades, subordination, duration, amortized loan-to-value, and the ability of the issuers to pay all amounts due in accordance with the contractual terms. Prices obtained from pricing services are usually not adjusted. Based on our internal review procedures and the fair values provided by the pricing services, we believe that the fair values provided by the pricing services are consistent with the principles of ASC Topic 820, Fair Value Measurement. However, on occasion pricing provided by the pricing services may not be consistent with other observed prices in the market for similar securities. Using observable market factors, including interest rate and yield curves, volatilities, prepayment speeds, loss severities and default rates, the Company may at times validate the observed prices using a discounted cash flow model and using the observed prices for similar securities to determine the fair value of its securities.

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Changes in the fair values, as a result of deteriorating economic conditions and credit spread changes, should only be temporary. Further, management believes that the Company’s other sources of liquidity, as well as the cash flow from principal and interest payments from its securities portfolio, reduces the risk that losses would be realized as a result of a need to sell securities to obtain liquidity.

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Income Taxes and Realization of Deferred Taxes – Critical Accounting Policies and Estimates

Seacoast is subject to income tax laws of the various jurisdictions in which it operates, including U.S. federal, state and local jurisdictions. These laws can be complex and subject to interpretation. Seacoast makes assumptions about how these laws should be applied when determining the provision for income tax expense, including assumptions around the timing of when certain items may be deemed taxable.

Seacoast’s provision for income taxes is comprised of current and deferred taxes. Deferred taxes represent the difference in measurement of assets and liabilities for financial reporting purposes compared to income tax return purposes. Deferred tax assets may also be recognized in connection with certain net operating losses (NOLs) and tax credits. Deferred tax assets are recognized if, based upon management’s judgment, it is more likely than not the benefits of the deferred tax assets will be realized.

At March 31, 2019, the Company had net deferred tax assets ("DTA") of $24.6 million. Although realization is not assured, management believes that realization of the carrying value of the DTA is more likely than not, based upon expectations as to future taxable income and tax planning strategies, as defined by ASC Topic 740 Income Taxes. In comparison, at December 31, 2018 the Company had a net DTA of $29.0 million.

Factors that support this conclusion:

• Income before tax ("IBT") has steadily increased as a result of organic growth, and the 2016 Floridian and BMO, 2017 GulfShore, NorthStar and PBCB, and 2018 First Green acquisitions will further assist in achieving management’s forecast of future earnings which recovers the remaining state net operating loss carry-forwards well before expiration;

• The Company has utilized all of its federal net operating loss carry-forwards, with the exception of those inherited in the acquisitions to which section 382 limitations apply;

• Credit costs and overall credit risk have been stable which decreases their impact on future taxable earnings;

• Growth rates for loans are at levels adequately supported by loan officers and support staff;

• We believe new loan production credit quality and concentrations are well managed; and

• Current economic growth forecasts for Florida and the Company’s markets are supportive.

Contingent Liabilities – Critical Accounting Policies and Estimates

The Company is subject to contingent liabilities, including judicial, regulatory and arbitration proceedings, and tax and other claims arising from the conduct of our business activities. These proceedings include actions brought against the Company and/or our subsidiaries with respect to transactions in which the Company and/or our subsidiaries acted as a lender, a financial adviser, a broker or acted in a related activity. Accruals are established for legal and other claims when it becomes probable that the Company will incur an expense and the amount can be reasonably estimated. Company management, together with attorneys, consultants and other professionals, assesses the probability and estimated amounts involved in a contingency. Throughout the life of a contingency, the Company or our advisers may learn of additional information that can affect our assessments about probability or about the estimates of amounts involved. Changes in these assessments can lead to changes in recorded reserves. In addition, the actual costs of resolving these claims may be substantially higher or lower than the amounts reserved for the claims. At March 31, 2019, the Company had no significant accruals for contingent liabilities and had no known pending matters that could potentially be significant.

Interest Rate Sensitivity

Fluctuations in interest rates may result in changes in the fair value of the Company’s financial instruments, cash flows and net interest income. This risk is managed using simulation modeling to calculate the most likely interest rate risk utilizing estimated loan and deposit growth. The objective is to optimize the Company’s financial position, liquidity, and net interest income while limiting their volatility.

Senior management regularly reviews the overall interest rate risk position and evaluates strategies to manage the risk. The Company's Asset and Liability Management Committee ("ALCO") uses simulation analysis to monitor changes in net interest income due to changes in market interest rates. The simulation of rising, declining and flat interest rate scenarios allows management to monitor and adjust interest rate sensitivity to minimize the impact of market interest rate swings. The analysis of the impact on net interest income over a twelve month period is subjected to instantaneous changes in market rates of 100 basis point increases up to 200 basis points of change or a 100 basis point decrease on net interest income and is monitored on a quarterly basis.

The following table presents the ALCO simulation model's projected impact of a change in interest rates on the projected baseline net interest income for the 12 and 24 month periods beginning on January 1, 2019, holding all other changes in the balance sheet

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static. This change in interest rates assumes parallel shifts in the yield curve and does not take into account changes in the slope of the yield curve.

	% Change in Projected Baseline Net Interest Income
Change in Interest Rates	1-12 months		13-24 months
+2.00%	5.65	%	7.48	%
+1.00%	2.91	%	3.92	%
Current	0.00	%	0.00	%
-1.00%	-2.69	%	-4.16	%

The Company had a positive gap position based on contractual and prepayment assumptions for the next 12 months, with a positive cumulative interest rate sensitivity gap as a percentage of total earning assets of 24.5% at March 31, 2019. This result includes assumptions for core deposit re-pricing validated for the Company by an independent third party consulting group.

The computations of interest rate risk do not necessarily include certain actions management may undertake to manage this risk in response to changes in interest rates. Derivative financial instruments, such as interest rate swaps, options, caps, floors, futures and forward contracts may be utilized as components of the Company’s risk management profile.

Effects of Inflation and Changing Prices

The condensed consolidated financial statements and related financial data presented herein have been prepared in accordance with U.S. GAAP, which require the measurement of financial position and operating results in terms of historical dollars, without considering changes in the relative purchasing power of money, over time, due to inflation.

Unlike most industrial companies, virtually all of the assets and liabilities of a financial institution are monetary in nature. As a result, interest rates have a more significant impact on a financial institution’s performance than the general level of inflation. However, inflation affects financial institutions by increasing their cost of goods and services purchased, as well as the cost of salaries and benefits, occupancy expense, and similar items. Inflation and related increases in interest rates generally decrease the market value of investments and loans held and may adversely affect liquidity, earnings, and shareholders’ equity. Mortgage originations and re-financings tend to slow as interest rates increase, and higher interest rates likely will reduce the Company’s earnings from such activities and the income from the sale of residential mortgage loans in the secondary market.

Item 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

See Management’s discussion and analysis “Interest Rate Sensitivity.”

Market risk refers to potential losses arising from changes in interest rates, and other relevant market rates or prices.

Interest rate risk, defined as the exposure of net interest income and Economic Value of Equity, or “EVE,” to adverse movements in interest rates, is the Company’s primary market risk, and mainly arises from the structure of the balance sheet (non-trading activities). The Company is also exposed to market risk in its investing activities. The Company’s Asset/Liability Committee, or “ALCO,” meets regularly and is responsible for reviewing the interest rate sensitivity position of the Company and establishing policies to monitor and limit exposure to interest rate risk. The policies established by the ALCO are reviewed and approved by the Company’s Board of Directors. The primary goal of interest rate risk management is to control exposure to interest rate risk, within policy limits approved by the Board. These limits reflect the Company’s tolerance for interest rate risk over short-term and long-term horizons.

The Company also performs valuation analyses, which are used for evaluating levels of risk present in the balance sheet that might not be taken into account in the net interest income simulation analyses. Whereas net interest income simulation highlights exposures over a relatively short time horizon, valuation analysis incorporates all cash flows over the estimated remaining life of all balance sheet positions. The valuation of the balance sheet, at a point in time, is defined as the discounted present value of asset cash flows minus the discounted value of liability cash flows, the net result of which is the EVE. The sensitivity of EVE to changes in the level of interest rates is a measure of the longer-term re-pricing risks and options risks embedded in the balance sheet. In contrast

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to the net interest income simulation, which assumes interest rates will change over a period of time, EVE uses instantaneous changes in rates.

EVE values only the current balance sheet, and does not incorporate the growth assumptions that are used in the net interest income simulation model. As with the net interest income simulation model, assumptions about the timing and variability of balance sheet cash flows are critical in the EVE analysis. Particularly important are the assumptions driving prepayments and the expected changes in balances and pricing of the indeterminate life deposit portfolios. Core deposits are a more significant funding source for the Company, making the lives attached to core deposits more important to the accuracy of our modeling of EVE. The Company periodically reassesses its assumptions regarding the indeterminate lives of core deposits utilizing an independent third party resource to assist. With lower interest rates over a prolonged period, the average lives of core deposits have trended higher and favorably impacted our model estimates of EVE for higher rates.

The following table presents the projected impact of a change in interest rates on the balance sheet. This change in interest rates assumes parallel shifts in the yield curve and does not take into account changes in the slope of the yield curve.

	% Change in Economic Value of Equity
Change in Interest Rates
+2.00%	17.30	%
+1.00%	10.40	%
Current	0.00	%
-1.00%	-13.60	%
-2.00%	-27.80	%

While an instantaneous and severe shift in interest rates is used in this analysis to provide an estimate of exposure under an extremely adverse scenario, a gradual shift in interest rates would have a much more modest impact. Since EVE measures the discounted present value of cash flows over the estimated lives of instruments, the change in EVE does not directly correlate to the degree that earnings would be impacted over a shorter time horizon, i.e., the next fiscal year. Further, EVE does not take into account factors such as future balance sheet growth, changes in product mix, change in yield curve relationships, and changing product spreads that could mitigate the adverse impact of changes in interest rates.

Item 4. CONTROLS AND PROCEDURES

The Company’s management, with the participation of its chief executive officer and chief financial officer has evaluated the effectiveness of the Company’s disclosure controls and procedures (as defined in Rule 13a-15(e) and Rule 15d-15(e) under the Exchange Act) as of March 31, 2019 and concluded that those disclosure controls and procedures are effective. There have been no changes to the Company’s internal control over financial reporting that have occurred during the first quarter of 2019 that have materially affected, or are reasonably likely to materially affect, the Company’s internal control over financial reporting.

While the Company believes that its existing disclosure controls and procedures have been effective to accomplish these objectives, the Company intends to continue to examine, refine and formalize its disclosure controls and procedures and to monitor ongoing developments in this area.

Part II OTHER INFORMATION

Item 1. Legal Proceedings

The Company and its subsidiaries, because of the nature of their business, are at all times subject to numerous legal actions, threatened or filed. Management presently believes that none of the legal proceedings to which it is a party are likely to have a materially adverse effect on the Company’s consolidated financial position, or operating results or cash flows.

Item 1A. Risk Factors

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In addition to the other information set forth in this report, you should consider the factors discussed in “Part I, Item 1A. Risk Factors” in our report on Form 10-K for the year ended December 31, 2018, which could materially affect our business, financial condition and prospective results. The risks described in this report, in our Form 10-K or our other SEC filings are not the only risks facing our Company. Additional risks and uncertainties not currently known to us or that we currently deem to be immaterial also may materially adversely affect our business, financial condition or future results. There have been no material changes with respect to the risk factors disclosed in our Annual Report on form 10-K for the year ended December 31, 2018.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds

Issuer purchases of equity securities during the first three months of 2019, entirely related to equity incentive plan activity, were as follows:

Period	Total Number of Shares Purchased	Average Price Paid Per Share		Total Number of Shares Purchased as part of Public Announced Plan1	Maximum Number of Shares that May yet be Purchased Under the Plan
1/1/19 to 1/31/19	1,431	$	26.14	327,337	87,663
2/1/19 to 2/28/19	1,489	25.03		328,826	86,174
3/1/19 to 3/31/19	1,353	27.57		330,179	84,821
Year to Date 2019	4,273	$	26.21	330,179	84,821

¹The plan to purchase equity securities totaling 165,000 was approved on September 18, 2001, with no expiration date. An additional 250,000 shares were added to the plan and approved on May 20, 2014.

Item 3. Defaults upon Senior Securities

None

Item 4. Mine Safety Disclosures

None

Item 5. Other Information

None

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Item 6. Exhibits

Exhibit 3.1.1 Amended and Restated Articles of Incorporation  Incorporated herein by reference from Exhibit 3.1 to the Company's Quarterly Report on Form 10-Q, filed May 10, 2006.

Exhibit 3.1.2 Articles of Amendment to the Amended and Restated Articles of Incorporation  Incorporated herein by reference from Exhibit 3.1 to the Company’s Form 8-K, filed December 23, 2008.

Exhibit 3.1.3 Articles of Amendment to the Amended and Restated Articles of Incorporation Incorporated herein by reference from Exhibit 3.4 to the Company's Form S-1, filed June 22, 2009.

Exhibit 3.1.4 Articles of Amendment to the Amended and Restated Articles of Incorporation Incorporated herein by reference from Exhibit 3.1 to the Company's Form 8-K, filed July 20, 2009.

Exhibit 3.1.5 Articles of Amendment to the Amended and Restated Articles of Incorporation Incorporated herein by reference from Exhibit 3.1 to the Company’s Form 8-K, filed December 3, 2009.

Exhibit 3.1.6 Articles of Amendment to the Amended and Restated Articles of Incorporation Incorporated herein by reference from Exhibit 3.1 to the Company’s Form 8-K/A, filed July 14, 2010.

Exhibit 3.1.7 Articles of Amendment to the Amended and Restated Articles of Incorporation Incorporated herein by reference from Exhibit 3.1 to the Company’s Form 8-K, filed June 25, 2010.

Exhibit 3.1.8 Articles of Amendment to the Amended and Restated Articles of Incorporation Incorporated herein by reference from Exhibit 3.1 to the Company’s Form 8-K, filed June 1, 2011.

Exhibit 3.1.9 Articles of Amendment to the Amended and Restated Articles of Incorporation  Incorporated herein by reference from Exhibit 3.1 to the Company’s Form 8-K, filed December 13, 2013.

Exhibit 3.1.10 Articles of Amendment to the Amended and Restated Articles of Incorporation Incorporated herein by reference from Exhibit 3.1 to the Company's Form 8K, filed May 30, 2018.

Exhibit 3.2 Amended and Restated By-laws of the Company  Incorporated herein by reference from Exhibit 3.2 to the Company’s Form 8-K, filed December 21, 2007.

Exhibit 31.1	Certification of the Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
Exhibit 31.2	Certification of the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
Exhibit 32.1	Statement of Chief Executive Officer Pursuant to 18 U.S.C. Section 1350, Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
Exhibit 32.2	Statement of Chief Financial Officer Pursuant to 18 U.S.C. Section 1350, Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
Exhibit 101	The following materials from Seacoast Banking Corporation of Florida’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2019 formatted in XBRL (eXtensible Business Reporting Language): (i) the Condensed Consolidated Balance Sheets, (ii) the Condensed Consolidated Statements of Operations, (iii) the Consolidated Statements of Cash Flows, (iv) the Notes to Condensed Consolidated Financial Statements.

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SIGNATURES

Pursuant to the requirements 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.

SEACOAST BANKING CORPORATION OF FLORIDA

May 7, 2019	/s/ Dennis S. Hudson, III
	DENNIS S. HUDSON, III
	Chairman & Chief Executive Officer

May 7, 2019	/s/ Charles M. Shaffer
	CHARLES M. SHAFFER
	Executive Vice President & 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, Dennis S. Hudson, III, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Seacoast Banking Corporation of Florida;

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(s) 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(s) 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 7, 2019	/s/ Dennis S. Hudson, III
	Dennis S. Hudson, III
	Chairman & Chief Executive Officer

EX-31.2

EXHIBIT 31.2

Certification Pursuant to

Section 302 of the Sarbanes-Oxley Act of 2002

I, Charles M. Shaffer, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Seacoast Banking Corporation of Florida;

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(s) 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(s) 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 7, 2019	/s/ Charles M. Shaffer
	Charles M. Shaffer
	Executive Vice President and Chief Financial Officer

EX-32.1

EXHIBIT 32.1

STATEMENT OF CHIEF EXECUTIVE OFFICER OF

SEACOAST BANKING CORPORATION OF FLORIDA

PURSUANT TO

18 U.S.C. SECTION 1350

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report on Form 10-Q of Seacoast Banking Corporation of Florida (“Company”) for the period ended March 31, 2019 (“Report”), I, Dennis S. Hudson, III , Chairman and Chief Executive Officer of the Company, do hereby certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of The Sarbanes-Oxley Act of 2002, that:

1. The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

2. The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: May 7, 2019	/s/ Dennis S. Hudson, III
	Dennis S. Hudson, III
	Chairman & Chief Executive Officer

EX-32.2

EXHIBIT 32.2

STATEMENT OF CHIEF FINANCIAL OFFICER OF

SEACOAST BANKING CORPORATION OF FLORIDA

PURSUANT TO

18 U.S.C. SECTION 1350

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report on Form 10-Q of Seacoast Banking Corporation of Florida (“Company”) for the period ended March 31, 2019 (“Report”), I, Charles M. Shaffer, Executive Vice President and Chief Financial Officer of the Company, do hereby certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of The Sarbanes-Oxley Act of 2002, that:

1. The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

2. The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: May 7, 2019	/s/ Charles M. Shaffer
	Charles M. Shaffer
	Executive Vice President and Chief Financial Officer

XML

Document And Entity Information	3 Months Ended
	Mar. 31, 2019 shares
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q1
Entity Registrant Name	SEACOAST BANKING CORP OF FLORIDA
Entity Central Index Key	0000730708
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Trading Symbol	SBCF
Entity Common Stock, Shares Outstanding	51,413,988

XML

CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Income Statement [Abstract]
Interest and fees on loans	$ 62,287	$ 45,257
Interest and dividends on securities	9,270	9,604
Interest on interest bearing deposits and other investments	918	616
Total Interest Income	72,475	55,477
Interest on deposits	3,873	1,538
Interest on time certificates	4,959	2,179
Interest on borrowed money	2,869	1,998
Total Interest Expense	11,701	5,715
Net Interest Income	60,774	49,762
Provision for loan losses	1,397	1,085
Net Interest Income after Provision for Loan Losses	59,377	48,677
Noninterest income
Other income	12,845	12,398
Securities losses, net	(9)	(102)
Total Noninterest Income (Note I)	12,836	12,296
Total Noninterest Expenses (Note I)	43,099	37,164
Income Before Income Taxes	29,114	23,809
Provision for income taxes	6,409	5,782
Net Income	$ 22,705	$ 18,027
Share Data
Net income per share of common stock - diluted (in dollars per share)	$ 0.44	$ 0.38
Net income per share of common stock - basic (in dollars per share)	$ 0.44	$ 0.38
Average common shares outstanding - diluted (in shares)	52,039	47,688
Average shares outstanding - basic (in shares)	51,359	46,952

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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Statement of Comprehensive Income [Abstract]
Net Income	$ 22,705	$ 18,027
Other comprehensive income (loss):
Unrealized gains (losses) on securities available for sale	12,676	(11,022)
Reclassification of unrealized losses on securities transferred to available for sale upon adoption of new accounting pronouncement	(730)	0
Amortization of unrealized losses on securities transferred to held to maturity, net	71	115
Reclassification adjustment for losses included in net income	87	0
(Provision) benefit for income taxes	(3,261)	2,898
Total other comprehensive income (loss)	8,843	(8,009)
Comprehensive Income	$ 31,548	$ 10,018

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CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Assets
Cash and due from banks	$ 98,270	$ 92,242
Interest bearing deposits with other banks	105,741	23,709
Total cash and cash equivalents	204,011	115,951
Time deposits with other banks	8,174	8,243
Debt securities:
Securities available for sale (at fair value)	877,549	865,831
Securities held to maturity (fair value $291,340 at March 31, 2019 and $349,895 at December 31, 2018)	295,485	357,949
Total debt securities	1,173,034	1,223,780
Loans held for sale (at fair value)	13,900	11,873
Loans	4,828,441	4,825,214
Less: Allowance for loan losses	(32,822)	(32,423)
Loans, net of allowance for loan losses	4,795,619	4,792,791
Bank premises and equipment, net	70,412	71,024
Other real estate owned	11,921	12,802
Goodwill	205,260	204,753
Other intangible assets, net	23,959	25,977
Bank owned life insurance	124,306	123,394
Net deferred tax assets	24,647	28,954
Other assets	128,146	128,117
Total Assets	6,783,389	6,747,659
Liabilities
Deposits	5,605,578	5,177,240
Securities sold under agreements to repurchase, maturing within 30 days	148,005	214,323
Federal Home Loan Bank (FHLB) borrowings	3,000	380,000
Subordinated debt	70,874	70,804
Other liabilities	59,508	41,025
Total Liabilities	5,886,965	5,883,392
Shareholders' Equity
Common stock, par value $0.10 per share, authorized 120,000,000 shares, issued 51,621,160 and outstanding 51,413,988 shares at March 31, 2019, and authorized 120,000,000, issued 51,514,734 and outstanding 51,361,079 shares at December 31, 2018	5,141	5,136
Other shareholders' equity	891,283	859,131
Total Shareholders' Equity	896,424	864,267
Total Liabilities and Shareholders' Equity	$ 6,783,389	$ 6,747,659

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CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Statement of Financial Position [Abstract]
Held to maturity, fair value	$ 291,340	$ 349,895
Common stock, par value (in dollars per share)	$ 0.10	$ 0.10
Common stock, shares authorized (in shares)	120,000,000	120,000,000
Common stock, shares issued (in shares)	51,621,160	51,514,734
Common stock, shares outstanding (in shares)	51,413,988	51,361,079

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CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Cash Flows from Operating Activities
Net income	$ 22,705	$ 18,027
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	1,669	1,568
Amortization of premiums and discounts on securities, net	625	742
Amortization of operating lease right-of-use assets	1,025
Other amortization and accretion, net	(810)	(406)
Stock based compensation	2,129	1,454
Origination of loans designated for sale	(54,034)	(78,156)
Sale of loans designated for sale	54,813	83,459
Provision for loan losses	1,397	1,085
Deferred income taxes	1,216	4,707
Losses on sale of securities	87	0
Gains on sale of loans	(1,819)	(1,884)
Gains on sale and write-downs of other real estate owned	(187)	1
Losses on disposition of fixed assets	(208)	(4)
Changes in operating assets and liabilities, net of effects from acquired companies:
Net decrease in other assets	2,069	2,234
Net decrease in other liabilities	(10,594)	(273)
Net cash provided by operating activities	20,083	32,554
Cash Flows from Investing Activities
Maturities and repayments of debt securities available for sale	18,261	27,296
Maturities and repayments of debt securities held to maturity	8,830	16,085
Proceeds from sale of debt securities available for sale	35,048	0
Purchases of debt securities available for sale	0	(72,311)
Maturities of time deposits with other banks	69	0
Net new loans and principal repayments	(3,141)	(84,063)
Proceeds from sale of other real estate owned	1,572	3,300
Proceeds from sale of FHLB and Federal Reserve Bank Stock	22,057	10,540
Purchase of FHLB and Federal Reserve Bank Stock	(9,749)	(13,027)
Proceeds from sale of Visa Class B stock	0	21,333
Redemption of bank owned life insurance	12,378	4,232
Additions to bank premises and equipment	(849)	(1,288)
Net cash provided by (used in) investing activities	84,476	(87,903)
Cash Flows from Financing Activities
Net increase in deposits	428,338	126,823
Net decrease in federal funds purchased and repurchase agreements	(66,318)	(42,845)
Net decrease in FHLB borrowings	(377,000)	(3,000)
Stock based employee benefit plans	(1,519)	726
Dividends paid	0	0
Net cash (used in) provided by financing activities	(16,499)	81,704
Net increase in cash and cash equivalents	88,060	26,355
Cash and cash equivalents at beginning of period	115,951	109,504
Cash and cash equivalents at end of period	204,011	135,859
Supplemental disclosure of cash flow information:
Cash paid during the period for interest	11,422	5,533
Cash paid during the period for taxes	0	1,200
Initial recognition of operating lease right-of-use assets	29,077	0
Initial recognition of operating lease liabilities	33,403	0
Supplemental disclosure of non cash investing activities:
Transfer of debt securities from held to maturity to available for sale	52,796	0
Transfers from loans to other real estate owned	430	3,919
Transfers from bank premises to other real estate owned	$ 0	$ 2,030

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CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Paid-in Capital	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Income (Loss), Net
Beginning balance (in shares) at Dec. 31, 2017		46,918
Beginning balance at Dec. 31, 2017	$ 689,663	$ 4,693	$ 661,632	$ 29,913	$ (2,359)	$ (4,216)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income	10,018			18,027		(8,009)
Stock based compensation expense	1,455		1,455
Common stock issued for stock based employee benefit plans (in shares)		3
Common stock issued for stock based employee benefit plans	78		(2)		80
Common stock issued for stock options (in shares)		62
Common stock issued for stock options	647	$ 5	642
Increase (decrease) in shares during the period (in shares)		65
Period increase (decrease) in stockholders' equity	12,198	$ 5	2,095	17,912	80	(7,894)
Ending balance (in shares) at Mar. 31, 2018		46,983
Ending balance at Mar. 31, 2018	701,861	$ 4,698	663,727	47,825	(2,279)	(12,110)
Beginning balance (in shares) at Dec. 31, 2018		51,361
Beginning balance at Dec. 31, 2018	864,267	$ 5,136	778,501	97,074	(3,384)	(13,060)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income	31,548			22,705		8,843
Stock based compensation expense	2,129		2,129
Common stock issued for stock based employee benefit plans (in shares)		49
Common stock issued for stock based employee benefit plans	(1,584)	$ 5	(14)		(1,575)
Common stock issued for stock options (in shares)		4
Common stock issued for stock options	64	$ 0	64
Increase (decrease) in shares during the period (in shares)		53
Period increase (decrease) in stockholders' equity	32,157	$ 5	2,179	22,705	(1,575)	8,843
Ending balance (in shares) at Mar. 31, 2019		51,414
Ending balance at Mar. 31, 2019	$ 896,424	$ 5,141	$ 780,680	$ 119,779	$ (4,959)	$ (4,217)

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Basis of Presentation

3 Months Ended

Mar. 31, 2019

Accounting Policies [Abstract]

Basis of Presentation

Basis of Presentation

Basis of Presentation: The accompanying unaudited condensed consolidated financial statements of Seacoast Banking Corporation of Florida and its subsidiaries (the "Company") have been prepared in accordance with U.S. generally accepted accounting principles for interim financial information and with the instructions to Form 10-Q and Rule 10-01 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by U.S. generally accepted accounting principles for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation have been included. Certain prior period amounts have been reclassified to conform to the current period presentation.

Operating results for the three months ended March 31, 2019 are not necessarily indicative of the results that may be expected for the year ending December 31, 2019 or any other period. For further information, refer to the consolidated financial statements and footnotes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2018.

Adoption of new accounting pronouncements: On January 1, 2019, the Company adopted Financial Accounting Standards Board (“FASB”) Accounting Standards Update (“ASU”) 2016-02, “Leases”, and all the related amendments (collectively, Accounting Standards Codification “ASC” Topic 842) through a cumulative-effect adjustment.

The new guidance requires a lessee to recognize at the transition date right-of-use assets ("ROUA") and lease liabilities for all operating leases. Upon adoption, the Company recognized ROUAs of $29 million and lease liabilities of $33 million. Operating lease liabilities are measured based on the present value of lease payments over the lease term. At the transition date, ROUA was determined by adjusting lease liabilities for the carrying balances of deferred rent under ASC Topic 840 Leases, cease-use liabilities under ASC Topic 420 Exit or Disposal Cost Obligations, and assets and liabilities recognized under ASC Topic 805 Business Combinations for acquired operating leases, which aggregated to $4 million.

We determine if an arrangement is a lease at the inception of a lease. ROUAs represent our right to use the underlying asset and lease liabilities represent our obligation to make lease payments for the lease term. Operating lease ROUAs and liabilities are recognized at commencement date based on the present value of lease payments over the lease term. As most of our leases do not provide an implicit rate, we use our incremental borrowing rate based on the appropriate term and information available at commencement date in determining the present value of lease payments. The lease term may include options to extend the lease when it is reasonably certain that we will exercise that option. ROUAs and operating lease liabilities are reported in Other Assets and Other Liabilities, respectively, in the Consolidated Balance Sheet. Lease expense for lease payments is recognized on a straight-line basis over the lease term.

The Company elected certain practical expedients offered by the FASB for all classes of leased assets. As a result, the Company has not reassessed whether existing contracts are or contain leases, nor has the Company reassessed the classification of existing leases. The Company elected not to separate lease and non-lease components and instead accounts for them as a single lease component. The Company also elected to exclude short-term leases from the recognition of right-of-use assets and lease liabilities. Therefore, if the lease term is equal to or less than twelve months (including the renewal options that we are reasonably certain to exercise) and we are not reasonably certain to exercise any available purchase options in the lease, we do not apply the new lease accounting guidance for those leases. The Company did not elect the hindsight practical expedient, which allows entities to use hindsight when determining lease term and impairment of right-of-use assets.

On January 1, 2019, we adopted ASU 2017-12 “Derivatives and Hedging" (Topic 815): Targeted Improvements to Accounting for Hedging Activities. Upon adoption, we reclassified certain debt securities from held to maturity to available for sale. The following table summarizes the impact:

	January 1, 2019
(In thousands)	Amortized Cost		Net Unrealized Gain (Loss) Reflected in OCI			Fair Value
Private mortgage-backed securities and collateralized mortgage obligations	$	21,526	$	147		$	21,673
Collateralized loan obligations	32,000		(877		)	31,123
Totals	$	53,526	$	(730	)	$	52,796

Use of Estimates: The preparation of these condensed consolidated financial statements requires management to make judgments in the application of certain of its accounting policies that involve significant estimates and assumptions. We have established policies and control procedures that are intended to ensure valuation methods are well controlled and applied consistently from period to period. These estimates and assumptions, which may materially affect the reported amounts of certain assets, liabilities, revenues and expenses, are based on information available as of the date of the financial statements, and changes in this information over time and the use of revised estimates and assumptions could materially affect amounts reported in subsequent financial statements. Specific areas, among others, requiring the application of management’s estimates include determination of the allowance for loan losses, acquisition accounting and purchased loans, intangible assets and impairment testing, other fair value adjustments, other than temporary impairment of securities, income taxes and realization of deferred tax assets and contingent liabilities.

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Recently Issued Accounting Standards, Not Yet Adopted

3 Months Ended

Mar. 31, 2019

Accounting Policies [Abstract]

Recently Issued Accounting Standards, Not Yet Adopted

Recently Issued Accounting Standards, Not Yet Adopted

 The following provides a brief description of accounting standards that have been issued but are not yet adopted that could have a material effect on the Company's financial statements:

ASU 2016-13, Financial Instruments –Credit Losses (Topic 326)
Description	In June 2016, FASB issued guidance to replace the incurred loss model with an expected loss model, which is referred to as the current expected credit loss (CECL) model. The CECL model is applicable to the measurement of credit losses on financial assets measured at amortized cost, including loan receivables and held to maturity debt securities. It also applies to off-balance sheet credit exposures not accounted for as insurance (i.e. loan commitments, standby letters of credit, financial guarantees and other similar instruments).
Date of Adoption	This amendment is effective for public business entities for reporting periods beginning after December 15, 2019, including interim periods within that reporting period. Early adoption is permitted only as of annual reporting periods after December 15, 2018, including interim reporting periods within that period.
Effect on the Consolidated Financial Statements	The Company's transition oversight committee is in the process of validating the credit loss estimation models and related processes. Updates to business processes and the documentation of accounting policy decisions are ongoing. The Company may recognize an increase in the allowance for credit losses upon adoption, recorded as a one-time cumulative adjustment to retained earnings. However, the magnitude of the impact on the Company's consolidated financial statements has not yet been determined. The Company will adopt this accounting standard effective January 1, 2020.

ASU 2017-04, Intangibles – Goodwill and Other (Topic 350): Simplifying the Test for Goodwill
Description	In January 2017, the FASB amended the existing guidance to simplify the goodwill impairment measurement test by eliminating Step 2. The amendment requires the Company to perform the goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount and recognizing an impairment charge for the amount by which the carrying amount exceeds the fair value. Additionally, an entity should consider the tax effects from any tax deductible goodwill on the carrying amount when measuring the impairment loss.
Date of Adoption	This amendment is effective for public business entities for reporting periods beginning after December 15, 2019, including interim periods within that reporting period. Early adoption is permitted on annual goodwill impairment tests performed after January 1, 2017.
Effect on the Consolidated Financial Statements	The impact to the consolidated financial statements from the adoption of this pronouncement is not expected to be material.

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Earnings per Share

3 Months Ended

Mar. 31, 2019

Earnings Per Share [Abstract]

Earnings per Share

Earnings per Share

Basic earnings per common share is computed by dividing net income available to common shareholders by the weighted average number of shares of common stock outstanding during the period.

For the three months ended March 31, 2019, options to purchase 487,000 shares were antidilutive and accordingly were excluded in the computation of diluted earnings per share, compared to 274,000 shares for the three months ended March 31, 2018.

	Three Months Ended March 31,
(Dollars in thousands, except per share data)	2019		2018
Basic earnings per share
Net income	$	22,705	$	18,027
Average common shares outstanding	51,359		46,952
Net income per share	$	0.44	$	0.38
Diluted earnings per share
Net income	$	22,705	$	18,027
Average common shares outstanding	51,359		46,952
Add: Dilutive effect of employee restricted stock and stock options	680		736
Average diluted shares outstanding	52,039		47,688
Net income per share	$	0.44	$	0.38

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Securities

3 Months Ended

Mar. 31, 2019

Investments, Debt and Equity Securities [Abstract]

Securities

Securities

The amortized cost, gross unrealized gains and losses and fair value of securities available for sale and held to maturity at March 31, 2019 and December 31, 2018are summarized as follows:

	March 31, 2019
(In thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Debt securities available for sale
U.S. Treasury securities and obligations of U.S. Government Sponsored Entities	$	6,296	$	105	$	(4	)	$	6,397
Mortgage-backed securities and collateralized mortgage obligations of U.S. Government Sponsored Entities	528,404		1,777		(6,228		)	523,953
Private mortgage-backed securities and collateralized mortgage obligations	67,206		968		(239		)	67,935
Collateralized loan obligations	243,546		2		(1,809		)	241,739
Obligations of state and political subdivisions	37,105		621		(201		)	37,525
Totals	$	882,557	$	3,473	$	(8,481	)	$	877,549
Debt securities held to maturity
Mortgage-backed securities of U.S. Government Sponsored Entities	$	295,485	$	356	$	(4,501	)	$	291,340
Totals	$	295,485	$	356	$	(4,501	)	$	291,340

	December 31, 2018
(In thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Debt securities available for sale
U.S. Treasury securities and obligations of U.S. Government Sponsored Entities	$	7,200	$	106	$	(6	)	$	7,300
Mortgage-backed securities and collateralized mortgage obligations of U.S. Government Sponsored Entities	567,753		300		(14,047		)	554,006
Private mortgage-backed securities and collateralized mortgage obligations	55,569		560		(401		)	55,728
Collateralized loan obligations	212,807		1		(3,442		)	209,366
Obligations of state and political subdivisions	39,543		339		(451		)	39,431
Totals	$	882,872	$	1,306	$	(18,347	)	$	865,831
Debt securities held to maturity
Mortgage-backed securities of U.S. Government Sponsored Entities	$	304,423	$	—	$	(7,324	)	$	297,099
Private mortgage-backed securities and collateralized mortgage obligations	21,526		277		(130		)	21,673
Collateralized loan obligations	32,000		—		(877		)	31,123
Totals	$	357,949	$	277	$	(8,331	)	$	349,895

Proceeds from sales of securities during the three months ended March 31, 2019 were $35.0 million, with gross gains of $0.2 million and gross losses of $0.3 million, which are included in "Securities losses, net" for the three months ended March 31, 2019. Also included in “Securities losses, net” for the three months endedMarch 31, 2019 is an increase of $0.1 million, representing the change in the value of an investment in shares of a mutual fund that invests primarily in CRA-qualified debt securities.

There were no sales of securities during the three month period ended March 31, 2018. Included in “Securities losses, net” for the three month period endedMarch 31, 2018, is a $0.1 million decline in the value of the CRA-qualified mutual fund investment.

On January 1, 2019, the Company adopted ASU 2017-12 and subsequently transferred held to maturity debt securities with an amortized cost basis of $53.5 million to available for sale. Those securities had unrealized losses of $0.7 million that was recorded in other comprehensive income on the date of transfer.

At March 31, 2019, debt securities with a fair value of $122.3 million were pledged as collateral for United States Treasury deposits, other public deposits and trust deposits. Debt securities with a fair value of $148.0 million were pledged as collateral for repurchase agreements.

The amortized cost and fair value of debt securities held to maturity and available for sale at March 31, 2019, by contractual maturity, are shown below. Expected maturities will differ from contractual maturities because prepayments of the underlying collateral for these securities may occur, due to the right to call or repay obligations with or without call or prepayment penalties. Securities not due at a single maturity date are shown separately.

	Held to Maturity				Available for Sale
(In thousands)	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Due in less than one year	$	—	$	—	$	11,288	$	11,268
Due after one year through five years	—		—		102,835		102,588
Due after five years through ten years	—		—		169,369		168,212
Due after ten years	—		—		3,455		3,593
	—		—		286,947		285,661
Mortgage-backed securities and collateralized mortgage obligations of U.S. Government Sponsored Entities	295,485		291,340		528,404		523,953
Private mortgage-backed securities and collateralized mortgage obligations	—		—		67,206		67,935
Totals	$	295,485	$	291,340	$	882,557	$	877,549

The estimated fair value of a security is determined based on market quotations when available or, if not available, by using quoted market prices for similar securities, pricing models or discounted cash flows analyses, using observable market data where available. The tables below indicate the fair value of debt securities with unrealized losses and the period of time for which these losses were outstanding at March 31, 2019 and December 31, 2018, respectively.

	March 31, 2019
	Less Than 12 Months					12 Months or Longer					Total
(In thousands)	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
U.S. Treasury securities and obligations of U.S. Government Sponsored Entities	$	—	—			$	545	$	(4	)	$	545	$	(4	)
Mortgage-backed securities and collateralized mortgage obligations of U.S. Government Sponsored Entities	80,889		(512		)	496,722		(10,217		)	577,611		(10,729		)
Private mortgage-backed securities and collateralized mortgage obligations	20,061		(230		)	2,038		(9		)	22,099		(239		)
Collateralized loan obligations	238,777		(1,809		)	—		—			238,777		(1,809		)
Obligations of state and political subdivisions	—		—			12,966		(201		)	12,966		(201		)
Totals	$	339,727	$	(2,551	)	$	512,271	$	(10,431	)	$	851,998	$	(12,982	)

	December 31, 2018
	Less Than 12 Months					12 Months or Longer					Total
(In thousands)	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
U.S. Treasury securities and obligations of U.S. Government Sponsored Entities	$	99	$	(1	)	$	642	$	(5	)	$	741	$	(6	)
Mortgage-backed securities and collateralized mortgage obligations of U.S. Government Sponsored Entities	200,184		(2,235		)	623,420		(19,136		)	823,604		(21,371		)
Private mortgage-backed securities and collateralized mortgage obligations	20,071		(344		)	12,739		(187		)	32,810		(531		)
Collateralized loan obligations	238,894		(4,319		)	—		—			238,894		(4,319		)
Obligations of state and political subdivisions	19,175		(241		)	9,553		(210		)	28,728		(451		)
Totals	$	478,423	$	(7,140	)	$	646,354	$	(19,538	)	$	1,124,777	$	(26,678	)

The two tables above include debt securities held to maturity that were transferred from available for sale into held to maturity during 2014. Those securities had unrealized losses of $3.1 million at the date of transfer, and at March 31, 2019, the unamortized balance was $0.6 million.

At March 31, 2019, the Company had $10.7 million of unrealized losses on mortgage-backed securities and collateralized mortgage obligations of government sponsored entities having a fair value of $577.6 million that were attributable to a combination of factors, including relative changes in interest rates since the time of purchase. The contractual cash flows for these securities are guaranteed by U.S. government agencies and U.S. government-sponsored enterprises. Based on the assessment of these mitigating factors, management believes that the unrealized losses on these debt security holdings are a function of changes in investment spreads and interest movements and not changes in credit quality. Management expects to recover the entire amortized cost basis of these securities.

At March 31, 2019, the Company had unrealized losses of $1.8 million on collateralized loan obligations with a fair value of $238.8 million. The collateral for these securities is first lien senior secured corporate debt. The Company holds senior tranches rated credit A or higher. Management expects to recover the entire amortized cost basis of these securities.

At March 31, 2019, the Company does not intend to sell debt securities that are in an unrealized loss position and it is not more than likely than not that the Company will be required to sell these securities before recovery of the amortized cost basis. Therefore, management does not consider any investment to be other-than-temporarily impaired at March 31, 2019.

Included in other assets at March 31, 2019 is $30.9 million of Federal Home Loan Bank and Federal Reserve Bank stock stated at par value. The Company has not identified events or changes in circumstances which may have a significant adverse effect on the fair value of these cost method investment securities. Also included in other assets is a $6.3 million investment in a mutual fund carried at fair value.

The Company holds 11,330 shares of Visa Class B stock, which following resolution of Visa litigation will be converted to Visa Class A shares. Under the current conversion ratio that became effective June 28, 2018, the Company would receive 1.6298 shares of Class A stock for each share of Class B stock for a total of 18,466 shares of Visa Class A stock. Our ownership of Visa stock is related to prior ownership in Visa's network, while Visa operated as a cooperative. This ownership is recorded on our financial records at zero basis.

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Loans

3 Months Ended

Mar. 31, 2019

Receivables [Abstract]

Loans

Loans

Information pertaining to portfolio loans, purchased credit impaired (“PCI”) loans, and purchased unimpaired loans (“PUL”) is as follows:

	March 31, 2019
(In thousands)	Portfolio Loans		PCI Loans		PULs		Total
Construction and land development	$	308,846	$	153	$	108,566	$	417,565
Commercial real estate	1,478,955		10,393		673,069		2,162,417
Residential real estate	1,077,523		2,575		249,068		1,329,166
Commercial and financial	606,179		667		106,033		712,879
Consumer	195,719		—		10,695		206,414
Totals1	$	3,667,222	$	13,788	$	1,147,431	$	4,828,441

	December 31, 2018
(In thousands)	Portfolio Loans		PCI Loans		PULs		Total
Construction and land development	$	301,473	$	151	$	141,944	$	443,568
Commercial real estate	1,437,989		10,828		683,249		2,132,066
Residential real estate	1,055,525		2,718		266,134		1,324,377
Commercial and financial	603,057		737		118,528		722,322
Consumer	190,207		—		12,674		202,881
Totals1	$	3,588,251	$	14,434	$	1,222,529	$	4,825,214
1Net loan balances as of March 31, 2019 and December 31, 2018 include deferred costs of $17.8 million and $16.9 million for each period, respectively.

The following tables present the contractual delinquency of the recorded investment by class of loans as of:

	March 31, 2019
(In thousands)	Current		Accruing 30-59 Days Past Due		Accruing 60-89 Days Past Due		Accruing Greater Than 90 Days		Nonaccrual		Total Financing Receivables
Portfolio Loans
Construction and land development	$	308,819	$	—	$	—	$	—	$	27	$	308,846
Commercial real estate	1,471,607		1,016		709		255		5,368		1,478,955
Residential real estate	1,068,869		612		65		—		7,977		1,077,523
Commercial and financial	599,068		3,724		1,350		81		1,956		606,179
Consumer	194,672		529		423		—		95		195,719
Total Portfolio Loans	3,643,035		5,881		2,547		336		15,423		3,667,222
Purchased Unimpaired Loans
Construction and land development	108,566		—		—		—		—		108,566
Commercial real estate	671,195		536		—		—		1,338		673,069
Residential real estate	246,583		1,288		—		428		769		249,068
Commercial and financial	104,229		—		—		—		1,804		106,033
Consumer	10,664		—		—		—		31		10,695
Total PULs	1,141,237		1,824		—		428		3,942		1,147,431
Purchased Credit Impaired Loans
Construction and land development	138		—		—		—		15		153
Commercial real estate	9,395		—		—		—		998		10,393
Residential real estate	558		—		—		—		2,017		2,575
Commercial and financial	649		—		—		—		18		667
Consumer	—		—		—		—		—		—
Total PCI Loans	10,740		—		—		—		3,048		13,788
Total Loans	$	4,795,012	$	7,705	$	2,547	$	764	$	22,413	$	4,828,441

	December 31, 2018
(In thousands)	Current		Accruing 30-59 Days Past Due		Accruing 60-89 Days Past Due		Accruing Greater Than 90 Days		Nonaccrual		Total Financing Receivables
Portfolio Loans
Construction and land development	$	301,348	$	97	$	—	$	—	$	28	$	301,473
Commercial real estate	1,427,413		3,852		97		141		6,486		1,437,989
Residential real estate	1,044,375		2,524		525		295		7,806		1,055,525
Commercial and financial	594,930		5,186		1,661		—		1,280		603,057
Consumer	189,061		637		326		—		183		190,207
Total Portfolio Loans	3,557,127		12,296		2,609		436		15,783		3,588,251
Purchased Unimpaired Loans
Construction and land development	140,013		1,931		—		—		—		141,944
Commercial real estate	680,060		1,846		—		—		1,343		683,249
Residential real estate	260,781		1,523		—		90		3,740		266,134
Commercial and financial	116,173		342		—		—		2,013		118,528
Consumer	12,643		—		31		—		—		12,674
Total PULs	1,209,670		5,642		31		90		7,096		1,222,529
Purchased Credit Impaired Loans
Construction and land development	135		—		—		—		16		151
Commercial real estate	8,403		1,034		—		—		1,391		10,828
Residential real estate	556		—		—		—		2,162		2,718
Commercial and financial	74		635		—		—		28		737
Consumer	—		—		—		—		—		—
Total PCI Loans	9,168		1,669		—		—		3,597		14,434
Total Loans	$	4,775,965	$	19,607	$	2,640	$	526	$	26,476	$	4,825,214

The Company's Credit Risk Management also utilizes an internal asset classification system as a means of identifying problem and potential problem loans. The following classifications are used to categorize loans under the internal classification system:

• Pass: Loans that are not problem loans or potential problem loans are considered to be pass-rated.

• Special Mention: Loans that do not currently expose the Company to sufficient risk to warrant classification in the Substandard or Doubtful categories, but possess weaknesses that deserve management's close attention are deemed to be Special Mention.

• Substandard: Loans with the distinct possibility that the Company will sustain some loss if the deficiencies are not corrected.

• Doubtful: Loans that have all the weaknesses inherent in those classified Substandard with the added characteristic that the weakness present makes collection or liquidation in full, on the basis of currently existing facts, conditions and values, highly questionable and improbable. The principal balance of loans classified as doubtful are likely to be charged off.

Risk ratings on commercial lending facilities are re-evaluated during the annual review process at a minimum, based on the size of the aggregate exposure, and/or when there is a credit action of the existing credit exposure. The following tables present the risk category of loans by class based on the most recent analysis performed as of:

	March 31, 2019
(In thousands)	Pass		Special Mention		Substandard		Doubtful		Total
Construction and land development	$	406,010	$	11,262	$	293	$	—	$	417,565
Commercial real estate	2,080,415		57,732		24,270		—		2,162,417
Residential real estate	1,304,847		3,953		20,366		—		1,329,166
Commercial and financial	696,837		9,013		7,029		—		712,879
Consumer	202,187		3,150		1,077		—		206,414
Totals	$	4,690,296	$	85,110	$	53,035	$	—	$	4,828,441

	December 31, 2018
(In thousands)	Pass		Special Mention		Substandard		Doubtful		Total
Construction and land development	$	428,044	$	10,429	$	5,095	$	—	$	443,568
Commercial real estate	2,063,589		41,429		27,048		—		2,132,066
Residential real estate	1,296,634		3,654		24,089		—		1,324,377
Commercial and financial	707,663		8,387		6,247		25		722,322
Consumer	198,367		3,397		1,117		—		202,881
Totals	$	4,694,297	$	67,296	$	63,596	$	25	$	4,825,214

PCI Loans

PCI loans are accounted for pursuant to ASC Topic 310-30. The excess of cash flows expected to be collected over the estimated fair value is referred to as the accretable yield and is recognized in interest income over the remaining life of the loan in situations where there is a reasonable expectation about the timing and amount of cash flows expected to be collected. The difference between the contractually required payments and the cash flows expected to be collected at acquisition, considering the impact of prepayments, is referred to as the non-accretable difference.

The table below summarizes the changes in accretable yield on PCI loans for the periods ended:

	Three Months Ended March 31,
(In thousands)	2019			2018
Beginning balance	$	2,924		$	3,699
Additions	—			—
Deletions	—			(43		)
Accretion	(776		)	(443		)
Reclassification from non-accretable difference	460			339
Ending balance	$	2,608		$	3,552

Troubled Debt Restructured Loans

The Company’s Troubled Debt Restructuring (“TDR”) concessions granted to certain borrowers generally do not include forgiveness of principal balances, but may include interest rate reductions, an extension of the amortization period and/or converting the loan to interest only for a limited period of time. Loan modifications are not reported in calendar years after modification if the loans were modified at an interest rate equal to the yields of new loan originations with comparable risk and the loans are performing based on the terms of the restructured agreements. Most loans prior to modification were classified as impaired and the allowance for loan losses is determined in accordance with Company policy.

During the three months ended March 31, 2019, two loans were modified in a TDR totaling $2.0 million. There were no loans modified in a TDR during the three months ended March 31, 2018. No accruing loans that were restructured within the twelve months preceding March 31, 2019 defaulted during the twelve months ended March 31, 2019.The Company considers a loan to have defaulted when it becomes 90 days or more delinquent under the modified terms, has been transferred to nonaccrual status, or has been transferred to other real estate owned. A defaulted TDR is generally placed on nonaccrual and a specific allowance for loan loss is assigned in accordance with the Company’s policy.

Impaired Loans

Loans are considered impaired if they are 90 days or more past due, in nonaccrual status, or are TDRs. As of March 31, 2019 and December 31, 2018, the Company’s recorded investment in impaired loans, excluding PCI loans, the unpaid principal balance and related valuation allowance was as follows:

	March 31, 2019
(In thousands)	Recorded Investment		Unpaid Principal Balance		Related Valuation Allowance
Impaired Loans with No Related Allowance Recorded:
Construction and land development	$	15	$	221	$	—
Commercial real estate	5,136		6,406		—
Residential real estate	10,294		14,873		—
Commercial and financial	2,036		3,103		—
Consumer	146		158		—
Impaired Loans with an Allowance Recorded:
Construction and land development	183		197		20
Commercial real estate	9,624		12,791		353
Residential real estate	5,688		5,820		577
Commercial and financial	2,024		2,020		1,329
Consumer	256		268		91
Total Impaired Loans
Construction and land development	198		418		20
Commercial real estate	14,760		19,197		353
Residential real estate	15,982		20,693		577
Commercial and financial	4,060		5,123		1,329
Consumer	402		426		91
Totals	$	35,402	$	45,857	$	2,370

	December 31, 2018
(In thousands)	Recorded Investment		Unpaid Principal Balance		Related Valuation Allowance
Impaired Loans with No Related Allowance Recorded:
Construction and land development	$	15	$	229	$	—
Commercial real estate	3,852		5,138		—
Residential real estate	13,510		18,111		—
Commercial and financial	1,191		1,414		—
Consumer	280		291		—
Impaired Loans with an Allowance Recorded:
Construction and land development	196		211		22
Commercial real estate	9,786		12,967		369
Residential real estate	5,537		5,664		805
Commercial and financial	2,131		2,309		1,498
Consumer	202		211		34
Total Impaired Loans
Construction and land development	211		440		22
Commercial real estate	13,638		18,105		369
Residential real estate	19,047		23,775		805
Commercial and financial	3,322		3,723		1,498
Consumer	482		502		34
Totals	$	36,700	$	46,545	$	2,728

Impaired loans also include TDRs where concessions have been granted to borrowers who have experienced financial difficulty. At March 31, 2019 and at December 31, 2018, accruing TDRs totaled $14.9 million and $13.3 million, respectively.

Average impaired loans for the three months ended March 31, 2019 and 2018 were $36.3 million and $31.1 million, respectively. The impaired loans were measured for impairment based on the value of underlying collateral or the present value of expected future cash flows discounted at the loan’s effective interest rate. The valuation allowance is included in the allowance for loan losses.

Interest payments received on impaired loans are recorded as interest income unless collection of the remaining recorded investment is doubtful, at which time payments received are recorded as reductions in principal. For the three months ended March 31, 2019, and 2018, the Company recorded interest income on impaired loans of $0.4 million and $0.4 million, respectively.

For impaired loans whose impairment is measured based on the present value of expected future cash flows, interest income represents the change in present value attributable to the passage of time, and totaled $35,000 and $88,000, for the three months ended March 31, 2019 and 2018, respectively

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Allowance for Loan Losses

3 Months Ended

Mar. 31, 2019

Receivables [Abstract]

Allowance for Loan Losses

Allowance for Loan Losses

Activity in the allowance for loan losses for the three month periods ended March 31, 2019 and 2018 is summarized as follows:

	Three Months Ended March 31, 2019
(In thousands)	Beginning Balance		Provision for Loan Losses			Charge- Offs			Recoveries		TDR Allowance Adjustments			Ending Balance
Construction & land development	$	2,233	$	83		$	—		$	4	$	—		$	2,320
Commercial real estate	11,112		625			(16		)	47		(15		)	11,753
Residential real estate	7,775		(414		)	(36		)	139		(19		)	7,445
Commercial and financial	8,585		853			(944		)	79		—			8,573
Consumer	2,718		250			(483		)	247		(1		)	2,731
Totals	$	32,423	$	1,397		$	(1,479	)	$	516	$	(35	)	$	32,822

	Three Months Ended March 31, 2018
(In thousands)	Beginning Balance		Provision for Loan Losses			Charge- Offs			Recoveries		TDR Allowance Adjustments			Ending Balance
Construction & land development	$	1,642	$	411		$	—		$	5	$	—		$	2,058
Commercial real estate	9,285		(575		)	—			147		(15		)	8,842
Residential real estate	7,131		788			—			200		(72		)	8,047
Commercial and financial	7,297		270			(198		)	24		—			7,393
Consumer	1,767		191			(307		)	128		(1		)	1,778
Totals	$	27,122	$	1,085		$	(505	)	$	504	$	(88	)	$	28,118

The allowance for loan losses is comprised of specific allowances for certain impaired loans and general allowances grouped into loan pools based on similar characteristics. The Company’s loan portfolio, excluding PCI loans, and related allowance at March 31, 2019 and December 31, 2018 is shown in the following tables:

	March 31, 2019
	Individually Evaluated for Impairment				Collectively Evaluated for Impairment				Total
(In thousands)	Recorded Investment		Associated Allowance		Recorded Investment		Associated Allowance		Recorded Investment		Associated Allowance
Construction & land development	$	197	$	20	$	417,215	$	2,300	$	417,412	$	2,320
Commercial real estate	14,760		353		2,137,264		11,400		2,152,024		11,753
Residential real estate	15,982		577		1,310,609		6,868		1,326,591		7,445
Commercial and financial	4,061		1,329		708,151		7,244		712,212		8,573
Consumer	402		91		206,012		2,640		206,414		2,731
Totals	$	35,402	$	2,370	$	4,779,251	$	30,452	$	4,814,653	$	32,822

	December 31, 2018
	Individually Evaluated for Impairment				Collectively Evaluated for Impairment				Total
(In thousands)	Recorded Investment		Associated Allowance		Recorded Investment		Associated Allowance		Recorded Investment		Associated Allowance
Construction & land development	$	211	$	22	$	443,206	$	2,211	$	443,417	$	2,233
Commercial real estate	13,638		369		2,107,600		10,743		2,121,238		11,112
Residential real estate	19,047		805		1,302,612		6,970		1,321,659		7,775
Commercial and financial	3,322		1,498		718,263		7,087		721,585		8,585
Consumer	482		34		202,399		2,684		202,881		2,718
Totals	$	36,700	$	2,728	$	4,774,080	$	29,695	$	4,810,780	$	32,423

Loans collectively evaluated for impairment reported at March 31, 2019 included acquired loans that are not PCI loans. At March 31, 2019, the remaining fair value adjustments for loans acquired was approximately $43.8 million, or approximately 3.8% of the outstanding aggregate PUL balances. At December 31, 2018, the remaining fair value adjustments for loans acquired was approximately $47.0 million, or 3.9% of the outstanding aggregate PUL balances. These amounts are accreted into interest income over the remaining lives of the related loans on a level yield basis.

The table below summarizes PCI loans that were individually evaluated for impairment based on expected cash flows at March 31, 2019 and December 31, 2018:

	March 31, 2019				December 31, 2018
	PCI Loans Individually Evaluated for Impairment
(In thousands)	Recorded Investment		Associated Allowance		Recorded Investment		Associated Allowance
Construction & land development	$	153	$	—	$	151	$	—
Commercial real estate	10,393		—		10,828		—
Residential real estate	2,575		—		2,718		—
Commercial and financial	667		—		737		—
Consumer	—		—		—		—
Totals	$	13,788	$	—	$	14,434	$	—

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Securities Sold Under Agreements to Repurchase

3 Months Ended

Mar. 31, 2019

Brokers and Dealers [Abstract]

Securities Sold Under Agreements to Repurchase

Securities Sold Under Agreements to Repurchase

Securities sold under agreements to repurchase are accounted for as secured borrowings. For securities sold under agreements to repurchase, the Company is obligated to provide additional collateral in the event of a significant decline in fair value of collateral pledged. Company securities sold under agreements to repurchase and securities pledged were as follows by collateral type and maturity as of: 

(In thousands)	March 31, 2019		December 31, 2018
Fair value of pledged securities - overnight and continuous:
Mortgage-backed securities and collateralized mortgage obligations of U.S. Government Sponsored Entities	$	148,005	$	214,323

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Lease Commitments

3 Months Ended

Mar. 31, 2019

Leases [Abstract]

Lease Commitments

Lease Commitments

The Company is the lessee in various noncancellable operating leases for land, buildings, and equipment. Certain leases contain provisions for variable lease payments that are linked to the consumer price index. Lease cost for the three months ended March 31, 2019 consists of:

	Three Months Ended
(In thousands)	March 31, 2019
Operating lease cost	$	1,405
Variable lease cost	306
Short-term lease cost	229
Sublease income	(128		)
Total lease cost	$	1,812

The following table provides supplemental information related to leases as of and for the three months ended March 31, 2019:

(In thousands, except for weighted average data)	March 31, 2019
Operating lease right-of-use assets	$	28,052
Operating lease liabilities	32,270
Cash paid for amounts included in the measurement of operating lease liabilities	1,512
Right-of-use assets obtained in exchange for new operating lease obligations	—
Weighted average remaining lease term for operating leases	9 years
Weighted average discount rate for operating leases	4.69		%

The Company’s lease agreements often include one or more options to renew at the Company’s discretion. If, at lease inception, the Company considers the exercising of a renewal option to be reasonably certain, the Company includes the extended term in the calculation of the lease liability. Maturities of lease liabilities as of March 31, 2019 are as follows:

(In thousands)
Twelve Months Ended March 31,
2020	$	5,902
2021	5,114
2022	4,698
2023	3,907
2024	3,445
Thereafter	17,027
Total undiscounted cash flows	40,093
Less: Net present value adjustment	(7,823		)
Total	$	32,270

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Noninterest Income and Expense

3 Months Ended

Mar. 31, 2019

Brokers and Dealers [Abstract]

Noninterest Income and Expense

Noninterest Income and Expense

Detail of noninterest income and expenses for the three months ended March 31, 2019 and 2018 are as follows:

	Three Months Ended March 31,
(In thousands)	2019			2018
Noninterest income
Service charges on deposit accounts	$	2,697		$	2,672
Trust fees	1,017			1,021
Mortgage banking fees	1,115			1,402
Brokerage commissions and fees	436			359
Marine finance fees	362			573
Interchange income	3,401			2,942
BOLI income	915			1,056
SBA gains	636			734
Other income	2,266			1,639
	12,845			12,398
Securities losses, net	(9		)	(102		)
Total	$	12,836		$	12,296
Noninterest expense
Salaries and wages	$	18,506		$	15,381
Employee benefits	4,206			3,081
Outsourced data processing costs	3,845			3,679
Telephone/data lines	811			612
Occupancy	3,807			3,117
Furniture and equipment	1,757			1,457
Marketing	1,132			1,252
Legal and professional fees	2,847			1,973
FDIC assessments	488			598
Amortization of intangibles	1,458			989
Foreclosed property expense and net (gain)/loss on sale	(40		)	192
Other	4,282			4,833
Total	$	43,099		$	37,164

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Equity Capital

3 Months Ended

Mar. 31, 2019

Equity [Abstract]

Equity Capital

Equity Capital

The Company is well capitalized and at March 31, 2019, the Company and the Company’s principal banking subsidiary, Seacoast Bank, exceeded the common equity Tier 1 capital ratio (CET1) regulatory threshold of 6.5% for well-capitalized institutions under the Basel III standardized transition approach, as well as risk-based and leverage ratio requirements for well capitalized banks under the regulatory framework for prompt corrective action.

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Contingent Liabilities

3 Months Ended

Mar. 31, 2019

Commitments and Contingencies Disclosure [Abstract]

Contingent Liabilities

Contingent Liabilities

The Company and its subsidiaries, because of the nature of their business, are at all times subject to numerous legal actions, threatened or filed. Management presently believes that none of the legal proceedings to which it is a party are likely to have a materially adverse effect on the Company’s consolidated financial condition, or operating results or cash flows.

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Fair Value

3 Months Ended

Mar. 31, 2019

Fair Value Disclosures [Abstract]

Fair Value

Fair Value

Under ASC Topic 820, fair value measurements for items measured at fair value on a recurring and nonrecurring basis at March 31, 2019 and December 31, 2018 included:

(In thousands)	Fair Value Measurements		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
March 31, 2019
Available for sale debt securities1	$	877,549	$	100	$	877,449	$	—
Loans held for sale2	13,900		—		13,900		—
Loans3	8,312		—		2,102		6,210
Other real estate owned4	11,921		—		313		11,608
Equity securities5	6,283		6,283		—		—
December 31, 2018
Available for sale debt securities1,5	$	865,831	$	100	$	865,731	$	—
Loans held for sale2	11,873		—		11,873		—
Loans3	8,590		—		2,290		6,300
Other real estate owned4	12,802		—		297		12,505
Equity securities5	6,205		6,205		—		—
1See Note D for further detail of fair value of individual investment categories.
2Recurring fair value basis determined using observable market data.
3See Note E. Nonrecurring fair value adjustments to loans identified as impaired reflect full or partial write-downs that are based on the loan’s observable market price or current appraised value of the collateral in accordance with ASC Topic 310.
4Fair value is measured on a nonrecurring basis in accordance with ASC Topic 360.
5An investment in shares of a mutual fund that invests primarily in CRA-qualified debt securities, reported at fair value in Other Assets. Recurring fair value basis is determined using market quotations.

Available for sale debt securities: U.S. Treasury securities are reported at fair value utilizing Level 1 inputs. Other securities are reported at fair value utilizing Level 2 inputs. The estimated fair value of a security is determined based on market quotations when available or, if not available, by using quoted market prices for similar securities, pricing models or discounted cash flow analyses, using observable market data where available.

The Company reviews the prices supplied by independent pricing services, as well as their underlying pricing methodologies, for reasonableness and to ensure such prices are aligned with traditional pricing matrices. The fair value of collateralized loan obligations is determined from broker quotes. From time to time, the Company will validate, on a sample basis, prices supplied by the independent pricing service by comparison to prices obtained from other brokers and third-party sources or derived using internal models.

Loans held for sale: Fair values are based upon estimated values to be received from independent third party purchasers. These loans are intended for sale and the Company believes that the fair value is the best indicator of the resolution of these loans. Interest income is recorded based on the contractual terms of the loan and in accordance with the Company’s policy on loans held for investment. None of the loans are 90 days or more past due or on nonaccrual as of March 31, 2019 and December 31, 2018. The aggregate fair value and contractual balance of loans held for sale as of March 31, 2019 and December 31, 2018 is as follows:

(In thousands)	March 31, 2019		December 31, 2018
Aggregate fair value	$	13,900	$	11,873
Contractual balance	13,399		11,562
Excess	501		311

Loans: Level 2 loans consist of impaired real estate loans which are collateral dependent. Fair value is based on recent real estate appraisals less estimated costs of sale. For residential real estate impaired loans, appraised values or internal evaluations are based on the comparative sales approach. Level 3 loans consist of commercial and commercial real estate impaired loans. For these loans evaluations may use either a single valuation approach or a combination of approaches, such as comparative sales, cost and/or income approach. A significant unobservable input in the income approach is the estimated capitalization rate for a given piece of collateral. At March 31, 2019, the capitalization rates utilized to determine fair value of the underlying collateral averaged approximately 7.6%. Adjustments to comparable sales may be made by an appraiser to reflect local market conditions or other economic factors and may result in changes in the fair value of an asset over time. As such, the fair value of these impaired loans is considered level 3 in the fair value hierarchy. Impaired loans measured at fair value total $8.3 million with a specific reserve of $2.4 million at March 31, 2019, compared to $8.6 million with a specific reserve of $2.7 million at December 31, 2018.

For loans classified as level 3, the changes included additions of $1.2 million related to loans that became impaired during 2019, offset by paydowns and chargeoffs of $1.3 million for the three months ended March 31, 2019.

Other real estate owned: When appraisals are used to determine fair value and the appraisals are based on a market approach, the fair value of other real estate owned (“OREO”) is classified as a level 2 input. When the fair value of OREO is based on appraisals which require significant adjustments to market-based valuation inputs or apply an income approach based on unobservable cash flows, the fair value of OREO is classified as Level 3.

For OREO classified as level 3 during the three months ended March 31, 2019, changes included reductions primarily consisting of sales of $1.3 million offset by the addition of foreclosed loans of $0.4 million.

Transfers between levels of the fair value hierarchy are recognized on the actual date of the event or circumstances that caused the transfer, which generally coincides with the Company’s monthly and/or quarter-end valuation process. There were no such transfers for loans and OREO classified as level 3 during the three months ended March 31, 2019 and 2018.

The carrying amount and fair value of the Company’s other financial instruments that were not disclosed previously in the balance sheet and for which carrying amount is not fair value as of March 31, 2019 and December 31, 2018 is as follows:

(In thousands)	Carrying Amount		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
March 31, 2019
Financial Assets
Debt securities held to maturity1	$	295,485	$	—	$	291,340	$	—
Time deposits with other banks	8,174		—		—		8,105
Loans, net	4,787,307		—		—		4,760,789
Financial Liabilities
Deposit liabilities	5,605,578		—		—		5,603,019
Federal Home Loan Bank (FHLB) borrowings	3,000		—		—		3,000
Subordinated debt	70,874		—		61,039		—
December 31, 2018
Financial Assets
Debt securities held to maturity1	$	357,949	$	—	$	349,895	$	—
Time deposits with other banks	8,243		—		—		8,132
Loans, net	4,784,201		—		—		4,835,248
Financial Liabilities
Deposit liabilities	5,177,240		—		—		5,172,098
Federal Home Loan Bank (FHLB) borrowings	380,000		—		—		380,027
Subordinated debt	70,804		—		61,224		—
1See Note D for further detail of individual investment categories.

The short maturity of Seacoast’s assets and liabilities results in having a significant number of financial instruments whose fair value equals or closely approximates carrying value. Such financial instruments are reported in the following balance sheet captions: cash and due from banks, interest bearing deposits with other banks, and securities sold under agreements to repurchase, maturing within 30 days.

The following methods and assumptions were used to estimate the fair value of each class of financial instrument for which it is practicable to estimate that value at March 31, 2019 and December 31, 2018:

Held to maturity debt securities: These debt securities are reported at fair value utilizing Level 2 inputs. The estimated fair value of a security is determined based on market quotations when available or, if not available, by using quoted market prices for similar securities, pricing models or discounted cash flow analyses, using observable market data where available.

The Company reviews the prices supplied by independent pricing services, as well as their underlying pricing methodologies, for reasonableness and to ensure such prices are aligned with traditional pricing matrices. The fair value of collateralized loan obligations is determined from broker quotes. From time to time, the Company will validate, on a sample basis, prices supplied by the independent pricing service by comparison to prices obtained from other brokers and third-party sources or derived using internal models.

Loans: Fair values are estimated for portfolios of loans with similar financial characteristics. Loans are segregated by type such as commercial or mortgage. Each loan category is further segmented into fixed and adjustable rate interest terms as well as performing and nonperforming categories. The fair value of loans is calculated by discounting scheduled cash flows through the estimated life including prepayment considerations, using estimated market discount rates that reflect the risks inherent in the loan. The fair value approach considers market-driven variables including credit related factors and reflects an “exit price” as defined in ASC 820.

Deposit Liabilities: The fair value of demand deposits, savings accounts and money market deposits is the amount payable at the reporting date. The fair value of fixed maturity certificates of deposit is estimated using the rates currently offered for funding of similar remaining maturities.

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Business Combinations

3 Months Ended

Mar. 31, 2019

Business Combinations [Abstract]

Business Combinations

Business Combinations

Acquisition of First Green Bancorp, Inc.

On October 19, 2018, the Company completed its acquisition of First Green Bancorp, Inc (“First Green”). Simultaneously, upon completion of the merger of First Green and the Company, First Green's wholly owned subsidiary bank, First Green Bank was merged with and into Seacoast Bank. Prior to the acquisition, First Green operated seven branches in the Orlando, Daytona, and Fort Lauderdale markets.

As a result of this acquisition, the Company expects to enhance its presence in the Orlando, Daytona, and Fort Lauderdale markets, expand its customer base and leverage operating cost through economies of scale, and positively affect the Company’s operating results to the extent the Company earns more from interest earning assets than it pays in interest on its interest bearing liabilities.

The Company acquired 100% of the outstanding common stock of First Green. Under the terms of the definitive agreement, each share of First Green common stock was converted into the right to receive 0.7324 shares of Seacoast common stock.

(In thousands, except per share data)	October 19, 2018
Shares exchanged for cash	$	5,462
Per share exchange ratio	0.7324
Number of shares of common stock issued	4,000
Multiplied by common stock price per share on October 19, 2018	$	26.87
Value of common stock issued	107,486
Cash paid for First Green vested stock options	6,558
Total purchase price	$	114,044

The acquisition of First Green was accounted for under the acquisition method in accordance with ASC Topic 805, Business Combinations. The Company recognized goodwill of $56.7 million for this acquisition that is nondeductible for tax purposes. The fair values initially assigned to assets acquired and liabilities assumed are preliminary and could change for up to one year after the closing date of the acquisition as new information and circumstances relative to closing date fair values are known. Determining fair values of assets and liabilities, especially the loan portfolio, core deposit intangibles, and deferred taxes, is a complicated process involving significant judgment regarding methods and assumptions used to calculate estimated fair values. The adjustments reflected in the table below are the result of information obtained subsequent to the initial measurement.

(In thousands)	Initially Measured October 19, 2018		Measurement Period Adjustments			As Adjusted October 19, 2018
Assets:
Cash	$	29,434	$	—		$	29,434
Investment securities	32,145		—			32,145
Loans, net	631,497		—			631,497
Fixed assets	16,828		—			16,828
Other real estate owned	410		—			410
Core deposit intangibles	10,170		(678		)	9,492
Goodwill	56,198		506			56,704
Other assets	40,669		172			40,841
Totals	$	817,351	$	—		$	817,351
Liabilities:
Deposits	$	624,289	$	—		$	624,289
Other liabilities	79,018		—			79,018
Totals	$	703,307	$	—		$	703,307

The table below presents information with respect to the fair value of acquired loans, as well as their unpaid principal balance (“Book Balance”) at acquisition date.

	October 19, 2018
(In thousands)	Book Balance		Fair Value
Loans:
Single family residential real estate	$	101,674	$	101,119
Commercial real estate	437,767		406,613
Construction/development/land	61,195		58,385
Commercial loans	56,288		54,973
Consumer and other loans	9,156		8,942
Purchased Credit Impaired	2,136		1,465
Total acquired loans	$	668,216	$	631,497

For the loans acquired we first segregated all acquired loans with specifically identified credit deficiency factors. The factors we considered to identify loans as PCI loans were all acquired loans that were nonaccrual, 60 days or more past due, designated as TDR, graded “special mention” or “substandard.” These loans were then evaluated to determine estimated fair values as of the acquisition date. As required by generally accepted accounting principles, we are accounting for these loans pursuant to ASC Topic 310-30. The table below summarizes the total contractually required principal and interest cash payments, management’s estimate of expected total cash payments and fair value of the loans as of October 19, 2018 for purchased credit impaired loans. Contractually required principal and interest payments have been adjusted for estimated prepayments.

(In thousands)	October 19, 2018
Contractually required principal and interest	$	2,136
Non-accretable difference	(671		)
Cash flows expected to be collected	1,465
Accretable yield	—
Total purchased credit-impaired loan acquired	$	1,465

Loans without specifically identified credit deficiency factors are referred to as PULs for disclosure purposes. These loans were then evaluated to determine estimated fair values as of the acquisition date. Although no specific credit deficiencies were identifiable, we believe there is an element of risk as to whether all contractual cash flows will be eventually received. Factors that were considered included the economic environment both nationally and locally as well as the real estate market particularly in Florida. We have applied ASC Topic 310-20 accounting treatment to the PULs.

The Company believes the deposits assumed from the acquisition have an intangible value. In determining the valuation amount, deposits were analyzed based on factors such as type of deposit, deposit retention, interest rates and age of deposit relationships.

Pro-Forma Information

Pro-forma data for the three months ended March 31, 2018 presents information as if the acquisition of First Green occurred at the beginning of 2018, as follows:

	Three Months Ended March 31,
(In thousands, except per share amounts)	2018
Net interest income	$	57,416
Net income	22,065
EPS - basic	$	0.43
EPS - diluted	0.43

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Basis of Presentation (Policies)

3 Months Ended

Mar. 31, 2019

Accounting Policies [Abstract]

Basis of Presentation

Basis of Presentation: The accompanying unaudited condensed consolidated financial statements of Seacoast Banking Corporation of Florida and its subsidiaries (the "Company") have been prepared in accordance with U.S. generally accepted accounting principles for interim financial information and with the instructions to Form 10-Q and Rule 10-01 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by U.S. generally accepted accounting principles for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation have been included. Certain prior period amounts have been reclassified to conform to the current period presentation.

Operating results for the three months ended March 31, 2019 are not necessarily indicative of the results that may be expected for the year ending December 31, 2019 or any other period. For further information, refer to the consolidated financial statements and footnotes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2018.

Adoption of New Accounting Pronouncements and Recent Issued Accounting Standards, Not Yet Adopted

Adoption of new accounting pronouncements: On January 1, 2019, the Company adopted Financial Accounting Standards Board (“FASB”) Accounting Standards Update (“ASU”) 2016-02, “Leases”, and all the related amendments (collectively, Accounting Standards Codification “ASC” Topic 842) through a cumulative-effect adjustment.

The new guidance requires a lessee to recognize at the transition date right-of-use assets ("ROUA") and lease liabilities for all operating leases. Upon adoption, the Company recognized ROUAs of $29 million and lease liabilities of $33 million. Operating lease liabilities are measured based on the present value of lease payments over the lease term. At the transition date, ROUA was determined by adjusting lease liabilities for the carrying balances of deferred rent under ASC Topic 840 Leases, cease-use liabilities under ASC Topic 420 Exit or Disposal Cost Obligations, and assets and liabilities recognized under ASC Topic 805 Business Combinations for acquired operating leases, which aggregated to $4 million.

We determine if an arrangement is a lease at the inception of a lease. ROUAs represent our right to use the underlying asset and lease liabilities represent our obligation to make lease payments for the lease term. Operating lease ROUAs and liabilities are recognized at commencement date based on the present value of lease payments over the lease term. As most of our leases do not provide an implicit rate, we use our incremental borrowing rate based on the appropriate term and information available at commencement date in determining the present value of lease payments. The lease term may include options to extend the lease when it is reasonably certain that we will exercise that option. ROUAs and operating lease liabilities are reported in Other Assets and Other Liabilities, respectively, in the Consolidated Balance Sheet. Lease expense for lease payments is recognized on a straight-line basis over the lease term.

The Company elected certain practical expedients offered by the FASB for all classes of leased assets. As a result, the Company has not reassessed whether existing contracts are or contain leases, nor has the Company reassessed the classification of existing leases. The Company elected not to separate lease and non-lease components and instead accounts for them as a single lease component. The Company also elected to exclude short-term leases from the recognition of right-of-use assets and lease liabilities. Therefore, if the lease term is equal to or less than twelve months (including the renewal options that we are reasonably certain to exercise) and we are not reasonably certain to exercise any available purchase options in the lease, we do not apply the new lease accounting guidance for those leases. The Company did not elect the hindsight practical expedient, which allows entities to use hindsight when determining lease term and impairment of right-of-use assets.

On January 1, 2019, we adopted ASU 2017-12 “Derivatives and Hedging" (Topic 815): Targeted Improvements to Accounting for Hedging Activities. Upon adoption, we reclassified certain debt securities from held to maturity to available for sale. The following table summarizes the impact:

	January 1, 2019
(In thousands)	Amortized Cost		Net Unrealized Gain (Loss) Reflected in OCI			Fair Value
Private mortgage-backed securities and collateralized mortgage obligations	$	21,526	$	147		$	21,673
Collateralized loan obligations	32,000		(877		)	31,123
Totals	$	53,526	$	(730	)	$	52,796

Recently Issued Accounting Standards, Not Yet Adopted

 The following provides a brief description of accounting standards that have been issued but are not yet adopted that could have a material effect on the Company's financial statements:

ASU 2016-13, Financial Instruments –Credit Losses (Topic 326)
Description	In June 2016, FASB issued guidance to replace the incurred loss model with an expected loss model, which is referred to as the current expected credit loss (CECL) model. The CECL model is applicable to the measurement of credit losses on financial assets measured at amortized cost, including loan receivables and held to maturity debt securities. It also applies to off-balance sheet credit exposures not accounted for as insurance (i.e. loan commitments, standby letters of credit, financial guarantees and other similar instruments).
Date of Adoption	This amendment is effective for public business entities for reporting periods beginning after December 15, 2019, including interim periods within that reporting period. Early adoption is permitted only as of annual reporting periods after December 15, 2018, including interim reporting periods within that period.
Effect on the Consolidated Financial Statements	The Company's transition oversight committee is in the process of validating the credit loss estimation models and related processes. Updates to business processes and the documentation of accounting policy decisions are ongoing. The Company may recognize an increase in the allowance for credit losses upon adoption, recorded as a one-time cumulative adjustment to retained earnings. However, the magnitude of the impact on the Company's consolidated financial statements has not yet been determined. The Company will adopt this accounting standard effective January 1, 2020.

ASU 2017-04, Intangibles – Goodwill and Other (Topic 350): Simplifying the Test for Goodwill
Description	In January 2017, the FASB amended the existing guidance to simplify the goodwill impairment measurement test by eliminating Step 2. The amendment requires the Company to perform the goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount and recognizing an impairment charge for the amount by which the carrying amount exceeds the fair value. Additionally, an entity should consider the tax effects from any tax deductible goodwill on the carrying amount when measuring the impairment loss.
Date of Adoption	This amendment is effective for public business entities for reporting periods beginning after December 15, 2019, including interim periods within that reporting period. Early adoption is permitted on annual goodwill impairment tests performed after January 1, 2017.
Effect on the Consolidated Financial Statements	The impact to the consolidated financial statements from the adoption of this pronouncement is not expected to be material.

Use of Estimates

Use of Estimates: The preparation of these condensed consolidated financial statements requires management to make judgments in the application of certain of its accounting policies that involve significant estimates and assumptions. We have established policies and control procedures that are intended to ensure valuation methods are well controlled and applied consistently from period to period. These estimates and assumptions, which may materially affect the reported amounts of certain assets, liabilities, revenues and expenses, are based on information available as of the date of the financial statements, and changes in this information over time and the use of revised estimates and assumptions could materially affect amounts reported in subsequent financial statements. Specific areas, among others, requiring the application of management’s estimates include determination of the allowance for loan losses, acquisition accounting and purchased loans, intangible assets and impairment testing, other fair value adjustments, other than temporary impairment of securities, income taxes and realization of deferred tax assets and contingent liabilities.

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Basis of Presentation (Tables)

3 Months Ended

Mar. 31, 2019

Accounting Policies [Abstract]

Schedule of Reclassification of Debt Securities

Upon adoption, we reclassified certain debt securities from held to maturity to available for sale. The following table summarizes the impact:

	January 1, 2019
(In thousands)	Amortized Cost		Net Unrealized Gain (Loss) Reflected in OCI			Fair Value
Private mortgage-backed securities and collateralized mortgage obligations	$	21,526	$	147		$	21,673
Collateralized loan obligations	32,000		(877		)	31,123
Totals	$	53,526	$	(730	)	$	52,796

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Earnings per Share (Tables)

3 Months Ended

Mar. 31, 2019

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted

	Three Months Ended March 31,
(Dollars in thousands, except per share data)	2019		2018
Basic earnings per share
Net income	$	22,705	$	18,027
Average common shares outstanding	51,359		46,952
Net income per share	$	0.44	$	0.38
Diluted earnings per share
Net income	$	22,705	$	18,027
Average common shares outstanding	51,359		46,952
Add: Dilutive effect of employee restricted stock and stock options	680		736
Average diluted shares outstanding	52,039		47,688
Net income per share	$	0.44	$	0.38

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Securities (Tables)

3 Months Ended

Mar. 31, 2019

Investments, Debt and Equity Securities [Abstract]

Summary of Amortized Cost and Fair Value of Securities Available for Sale

The amortized cost, gross unrealized gains and losses and fair value of securities available for sale and held to maturity at March 31, 2019 and December 31, 2018are summarized as follows:

	March 31, 2019
(In thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Debt securities available for sale
U.S. Treasury securities and obligations of U.S. Government Sponsored Entities	$	6,296	$	105	$	(4	)	$	6,397
Mortgage-backed securities and collateralized mortgage obligations of U.S. Government Sponsored Entities	528,404		1,777		(6,228		)	523,953
Private mortgage-backed securities and collateralized mortgage obligations	67,206		968		(239		)	67,935
Collateralized loan obligations	243,546		2		(1,809		)	241,739
Obligations of state and political subdivisions	37,105		621		(201		)	37,525
Totals	$	882,557	$	3,473	$	(8,481	)	$	877,549
Debt securities held to maturity
Mortgage-backed securities of U.S. Government Sponsored Entities	$	295,485	$	356	$	(4,501	)	$	291,340
Totals	$	295,485	$	356	$	(4,501	)	$	291,340

	December 31, 2018
(In thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Debt securities available for sale
U.S. Treasury securities and obligations of U.S. Government Sponsored Entities	$	7,200	$	106	$	(6	)	$	7,300
Mortgage-backed securities and collateralized mortgage obligations of U.S. Government Sponsored Entities	567,753		300		(14,047		)	554,006
Private mortgage-backed securities and collateralized mortgage obligations	55,569		560		(401		)	55,728
Collateralized loan obligations	212,807		1		(3,442		)	209,366
Obligations of state and political subdivisions	39,543		339		(451		)	39,431
Totals	$	882,872	$	1,306	$	(18,347	)	$	865,831
Debt securities held to maturity
Mortgage-backed securities of U.S. Government Sponsored Entities	$	304,423	$	—	$	(7,324	)	$	297,099
Private mortgage-backed securities and collateralized mortgage obligations	21,526		277		(130		)	21,673
Collateralized loan obligations	32,000		—		(877		)	31,123
Totals	$	357,949	$	277	$	(8,331	)	$	349,895

Summary of Amortized Cost and Fair Value of Held-to-Maturity Securities

The amortized cost, gross unrealized gains and losses and fair value of securities available for sale and held to maturity at March 31, 2019 and December 31, 2018are summarized as follows:

	March 31, 2019
(In thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Debt securities available for sale
U.S. Treasury securities and obligations of U.S. Government Sponsored Entities	$	6,296	$	105	$	(4	)	$	6,397
Mortgage-backed securities and collateralized mortgage obligations of U.S. Government Sponsored Entities	528,404		1,777		(6,228		)	523,953
Private mortgage-backed securities and collateralized mortgage obligations	67,206		968		(239		)	67,935
Collateralized loan obligations	243,546		2		(1,809		)	241,739
Obligations of state and political subdivisions	37,105		621		(201		)	37,525
Totals	$	882,557	$	3,473	$	(8,481	)	$	877,549
Debt securities held to maturity
Mortgage-backed securities of U.S. Government Sponsored Entities	$	295,485	$	356	$	(4,501	)	$	291,340
Totals	$	295,485	$	356	$	(4,501	)	$	291,340

	December 31, 2018
(In thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Debt securities available for sale
U.S. Treasury securities and obligations of U.S. Government Sponsored Entities	$	7,200	$	106	$	(6	)	$	7,300
Mortgage-backed securities and collateralized mortgage obligations of U.S. Government Sponsored Entities	567,753		300		(14,047		)	554,006
Private mortgage-backed securities and collateralized mortgage obligations	55,569		560		(401		)	55,728
Collateralized loan obligations	212,807		1		(3,442		)	209,366
Obligations of state and political subdivisions	39,543		339		(451		)	39,431
Totals	$	882,872	$	1,306	$	(18,347	)	$	865,831
Debt securities held to maturity
Mortgage-backed securities of U.S. Government Sponsored Entities	$	304,423	$	—	$	(7,324	)	$	297,099
Private mortgage-backed securities and collateralized mortgage obligations	21,526		277		(130		)	21,673
Collateralized loan obligations	32,000		—		(877		)	31,123
Totals	$	357,949	$	277	$	(8,331	)	$	349,895

Summary of Investments Classified by Contractual Maturity

The amortized cost and fair value of debt securities held to maturity and available for sale at March 31, 2019, by contractual maturity, are shown below. Expected maturities will differ from contractual maturities because prepayments of the underlying collateral for these securities may occur, due to the right to call or repay obligations with or without call or prepayment penalties. Securities not due at a single maturity date are shown separately.

	Held to Maturity				Available for Sale
(In thousands)	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Due in less than one year	$	—	$	—	$	11,288	$	11,268
Due after one year through five years	—		—		102,835		102,588
Due after five years through ten years	—		—		169,369		168,212
Due after ten years	—		—		3,455		3,593
	—		—		286,947		285,661
Mortgage-backed securities and collateralized mortgage obligations of U.S. Government Sponsored Entities	295,485		291,340		528,404		523,953
Private mortgage-backed securities and collateralized mortgage obligations	—		—		67,206		67,935
Totals	$	295,485	$	291,340	$	882,557	$	877,549

Schedule of Debt Securities in Unrealized Loss Position

The tables below indicate the fair value of debt securities with unrealized losses and the period of time for which these losses were outstanding at March 31, 2019 and December 31, 2018, respectively.

	March 31, 2019
	Less Than 12 Months					12 Months or Longer					Total
(In thousands)	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
U.S. Treasury securities and obligations of U.S. Government Sponsored Entities	$	—	—			$	545	$	(4	)	$	545	$	(4	)
Mortgage-backed securities and collateralized mortgage obligations of U.S. Government Sponsored Entities	80,889		(512		)	496,722		(10,217		)	577,611		(10,729		)
Private mortgage-backed securities and collateralized mortgage obligations	20,061		(230		)	2,038		(9		)	22,099		(239		)
Collateralized loan obligations	238,777		(1,809		)	—		—			238,777		(1,809		)
Obligations of state and political subdivisions	—		—			12,966		(201		)	12,966		(201		)
Totals	$	339,727	$	(2,551	)	$	512,271	$	(10,431	)	$	851,998	$	(12,982	)

	December 31, 2018
	Less Than 12 Months					12 Months or Longer					Total
(In thousands)	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
U.S. Treasury securities and obligations of U.S. Government Sponsored Entities	$	99	$	(1	)	$	642	$	(5	)	$	741	$	(6	)
Mortgage-backed securities and collateralized mortgage obligations of U.S. Government Sponsored Entities	200,184		(2,235		)	623,420		(19,136		)	823,604		(21,371		)
Private mortgage-backed securities and collateralized mortgage obligations	20,071		(344		)	12,739		(187		)	32,810		(531		)
Collateralized loan obligations	238,894		(4,319		)	—		—			238,894		(4,319		)
Obligations of state and political subdivisions	19,175		(241		)	9,553		(210		)	28,728		(451		)
Totals	$	478,423	$	(7,140	)	$	646,354	$	(19,538	)	$	1,124,777	$	(26,678	)

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Loans (Tables)

3 Months Ended

Mar. 31, 2019

Receivables [Abstract]

Schedule of Portfolio Loans, Purchased Credit Impaired Loans and Purchased Unimpaired Loans

Information pertaining to portfolio loans, purchased credit impaired (“PCI”) loans, and purchased unimpaired loans (“PUL”) is as follows:

	March 31, 2019
(In thousands)	Portfolio Loans		PCI Loans		PULs		Total
Construction and land development	$	308,846	$	153	$	108,566	$	417,565
Commercial real estate	1,478,955		10,393		673,069		2,162,417
Residential real estate	1,077,523		2,575		249,068		1,329,166
Commercial and financial	606,179		667		106,033		712,879
Consumer	195,719		—		10,695		206,414
Totals1	$	3,667,222	$	13,788	$	1,147,431	$	4,828,441

	December 31, 2018
(In thousands)	Portfolio Loans		PCI Loans		PULs		Total
Construction and land development	$	301,473	$	151	$	141,944	$	443,568
Commercial real estate	1,437,989		10,828		683,249		2,132,066
Residential real estate	1,055,525		2,718		266,134		1,324,377
Commercial and financial	603,057		737		118,528		722,322
Consumer	190,207		—		12,674		202,881
Totals1	$	3,588,251	$	14,434	$	1,222,529	$	4,825,214
1Net loan balances as of March 31, 2019 and December 31, 2018 include deferred costs of $17.8 million and $16.9 million for each period, respectively.

Schedule of Past Due Financing Receivables

The following tables present the contractual delinquency of the recorded investment by class of loans as of:

	March 31, 2019
(In thousands)	Current		Accruing 30-59 Days Past Due		Accruing 60-89 Days Past Due		Accruing Greater Than 90 Days		Nonaccrual		Total Financing Receivables
Portfolio Loans
Construction and land development	$	308,819	$	—	$	—	$	—	$	27	$	308,846
Commercial real estate	1,471,607		1,016		709		255		5,368		1,478,955
Residential real estate	1,068,869		612		65		—		7,977		1,077,523
Commercial and financial	599,068		3,724		1,350		81		1,956		606,179
Consumer	194,672		529		423		—		95		195,719
Total Portfolio Loans	3,643,035		5,881		2,547		336		15,423		3,667,222
Purchased Unimpaired Loans
Construction and land development	108,566		—		—		—		—		108,566
Commercial real estate	671,195		536		—		—		1,338		673,069
Residential real estate	246,583		1,288		—		428		769		249,068
Commercial and financial	104,229		—		—		—		1,804		106,033
Consumer	10,664		—		—		—		31		10,695
Total PULs	1,141,237		1,824		—		428		3,942		1,147,431
Purchased Credit Impaired Loans
Construction and land development	138		—		—		—		15		153
Commercial real estate	9,395		—		—		—		998		10,393
Residential real estate	558		—		—		—		2,017		2,575
Commercial and financial	649		—		—		—		18		667
Consumer	—		—		—		—		—		—
Total PCI Loans	10,740		—		—		—		3,048		13,788
Total Loans	$	4,795,012	$	7,705	$	2,547	$	764	$	22,413	$	4,828,441

	December 31, 2018
(In thousands)	Current		Accruing 30-59 Days Past Due		Accruing 60-89 Days Past Due		Accruing Greater Than 90 Days		Nonaccrual		Total Financing Receivables
Portfolio Loans
Construction and land development	$	301,348	$	97	$	—	$	—	$	28	$	301,473
Commercial real estate	1,427,413		3,852		97		141		6,486		1,437,989
Residential real estate	1,044,375		2,524		525		295		7,806		1,055,525
Commercial and financial	594,930		5,186		1,661		—		1,280		603,057
Consumer	189,061		637		326		—		183		190,207
Total Portfolio Loans	3,557,127		12,296		2,609		436		15,783		3,588,251
Purchased Unimpaired Loans
Construction and land development	140,013		1,931		—		—		—		141,944
Commercial real estate	680,060		1,846		—		—		1,343		683,249
Residential real estate	260,781		1,523		—		90		3,740		266,134
Commercial and financial	116,173		342		—		—		2,013		118,528
Consumer	12,643		—		31		—		—		12,674
Total PULs	1,209,670		5,642		31		90		7,096		1,222,529
Purchased Credit Impaired Loans
Construction and land development	135		—		—		—		16		151
Commercial real estate	8,403		1,034		—		—		1,391		10,828
Residential real estate	556		—		—		—		2,162		2,718
Commercial and financial	74		635		—		—		28		737
Consumer	—		—		—		—		—		—
Total PCI Loans	9,168		1,669		—		—		3,597		14,434
Total Loans	$	4,775,965	$	19,607	$	2,640	$	526	$	26,476	$	4,825,214

Schedule of Risk Categories of Loans by Class of Loans

Risk ratings on commercial lending facilities are re-evaluated during the annual review process at a minimum, based on the size of the aggregate exposure, and/or when there is a credit action of the existing credit exposure. The following tables present the risk category of loans by class based on the most recent analysis performed as of:

	March 31, 2019
(In thousands)	Pass		Special Mention		Substandard		Doubtful		Total
Construction and land development	$	406,010	$	11,262	$	293	$	—	$	417,565
Commercial real estate	2,080,415		57,732		24,270		—		2,162,417
Residential real estate	1,304,847		3,953		20,366		—		1,329,166
Commercial and financial	696,837		9,013		7,029		—		712,879
Consumer	202,187		3,150		1,077		—		206,414
Totals	$	4,690,296	$	85,110	$	53,035	$	—	$	4,828,441

	December 31, 2018
(In thousands)	Pass		Special Mention		Substandard		Doubtful		Total
Construction and land development	$	428,044	$	10,429	$	5,095	$	—	$	443,568
Commercial real estate	2,063,589		41,429		27,048		—		2,132,066
Residential real estate	1,296,634		3,654		24,089		—		1,324,377
Commercial and financial	707,663		8,387		6,247		25		722,322
Consumer	198,367		3,397		1,117		—		202,881
Totals	$	4,694,297	$	67,296	$	63,596	$	25	$	4,825,214

Summary of Changes in Accretable Yield on PCI Loans

The table below summarizes the changes in accretable yield on PCI loans for the periods ended:

	Three Months Ended March 31,
(In thousands)	2019			2018
Beginning balance	$	2,924		$	3,699
Additions	—			—
Deletions	—			(43		)
Accretion	(776		)	(443		)
Reclassification from non-accretable difference	460			339
Ending balance	$	2,608		$	3,552

Schedule of Impaired Financing Receivables, Excluding PCI Loans and Valuation Allowances

As of March 31, 2019 and December 31, 2018, the Company’s recorded investment in impaired loans, excluding PCI loans, the unpaid principal balance and related valuation allowance was as follows:

	March 31, 2019
(In thousands)	Recorded Investment		Unpaid Principal Balance		Related Valuation Allowance
Impaired Loans with No Related Allowance Recorded:
Construction and land development	$	15	$	221	$	—
Commercial real estate	5,136		6,406		—
Residential real estate	10,294		14,873		—
Commercial and financial	2,036		3,103		—
Consumer	146		158		—
Impaired Loans with an Allowance Recorded:
Construction and land development	183		197		20
Commercial real estate	9,624		12,791		353
Residential real estate	5,688		5,820		577
Commercial and financial	2,024		2,020		1,329
Consumer	256		268		91
Total Impaired Loans
Construction and land development	198		418		20
Commercial real estate	14,760		19,197		353
Residential real estate	15,982		20,693		577
Commercial and financial	4,060		5,123		1,329
Consumer	402		426		91
Totals	$	35,402	$	45,857	$	2,370

	December 31, 2018
(In thousands)	Recorded Investment		Unpaid Principal Balance		Related Valuation Allowance
Impaired Loans with No Related Allowance Recorded:
Construction and land development	$	15	$	229	$	—
Commercial real estate	3,852		5,138		—
Residential real estate	13,510		18,111		—
Commercial and financial	1,191		1,414		—
Consumer	280		291		—
Impaired Loans with an Allowance Recorded:
Construction and land development	196		211		22
Commercial real estate	9,786		12,967		369
Residential real estate	5,537		5,664		805
Commercial and financial	2,131		2,309		1,498
Consumer	202		211		34
Total Impaired Loans
Construction and land development	211		440		22
Commercial real estate	13,638		18,105		369
Residential real estate	19,047		23,775		805
Commercial and financial	3,322		3,723		1,498
Consumer	482		502		34
Totals	$	36,700	$	46,545	$	2,728

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Allowance for Loan Losses (Tables)

3 Months Ended

Mar. 31, 2019

Receivables [Abstract]

Schedule of Allowance for Loan Losses

Activity in the allowance for loan losses for the three month periods ended March 31, 2019 and 2018 is summarized as follows:

	Three Months Ended March 31, 2019
(In thousands)	Beginning Balance		Provision for Loan Losses			Charge- Offs			Recoveries		TDR Allowance Adjustments			Ending Balance
Construction & land development	$	2,233	$	83		$	—		$	4	$	—		$	2,320
Commercial real estate	11,112		625			(16		)	47		(15		)	11,753
Residential real estate	7,775		(414		)	(36		)	139		(19		)	7,445
Commercial and financial	8,585		853			(944		)	79		—			8,573
Consumer	2,718		250			(483		)	247		(1		)	2,731
Totals	$	32,423	$	1,397		$	(1,479	)	$	516	$	(35	)	$	32,822

	Three Months Ended March 31, 2018
(In thousands)	Beginning Balance		Provision for Loan Losses			Charge- Offs			Recoveries		TDR Allowance Adjustments			Ending Balance
Construction & land development	$	1,642	$	411		$	—		$	5	$	—		$	2,058
Commercial real estate	9,285		(575		)	—			147		(15		)	8,842
Residential real estate	7,131		788			—			200		(72		)	8,047
Commercial and financial	7,297		270			(198		)	24		—			7,393
Consumer	1,767		191			(307		)	128		(1		)	1,778
Totals	$	27,122	$	1,085		$	(505	)	$	504	$	(88	)	$	28,118

Schedule of Loan Portfolio, Excluding PCI Loans and Related Allowance

The Company’s loan portfolio, excluding PCI loans, and related allowance at March 31, 2019 and December 31, 2018 is shown in the following tables:

	March 31, 2019
	Individually Evaluated for Impairment				Collectively Evaluated for Impairment				Total
(In thousands)	Recorded Investment		Associated Allowance		Recorded Investment		Associated Allowance		Recorded Investment		Associated Allowance
Construction & land development	$	197	$	20	$	417,215	$	2,300	$	417,412	$	2,320
Commercial real estate	14,760		353		2,137,264		11,400		2,152,024		11,753
Residential real estate	15,982		577		1,310,609		6,868		1,326,591		7,445
Commercial and financial	4,061		1,329		708,151		7,244		712,212		8,573
Consumer	402		91		206,012		2,640		206,414		2,731
Totals	$	35,402	$	2,370	$	4,779,251	$	30,452	$	4,814,653	$	32,822

	December 31, 2018
	Individually Evaluated for Impairment				Collectively Evaluated for Impairment				Total
(In thousands)	Recorded Investment		Associated Allowance		Recorded Investment		Associated Allowance		Recorded Investment		Associated Allowance
Construction & land development	$	211	$	22	$	443,206	$	2,211	$	443,417	$	2,233
Commercial real estate	13,638		369		2,107,600		10,743		2,121,238		11,112
Residential real estate	19,047		805		1,302,612		6,970		1,321,659		7,775
Commercial and financial	3,322		1,498		718,263		7,087		721,585		8,585
Consumer	482		34		202,399		2,684		202,881		2,718
Totals	$	36,700	$	2,728	$	4,774,080	$	29,695	$	4,810,780	$	32,423

The table below summarizes PCI loans that were individually evaluated for impairment based on expected cash flows at March 31, 2019 and December 31, 2018:

	March 31, 2019				December 31, 2018
	PCI Loans Individually Evaluated for Impairment
(In thousands)	Recorded Investment		Associated Allowance		Recorded Investment		Associated Allowance
Construction & land development	$	153	$	—	$	151	$	—
Commercial real estate	10,393		—		10,828		—
Residential real estate	2,575		—		2,718		—
Commercial and financial	667		—		737		—
Consumer	—		—		—		—
Totals	$	13,788	$	—	$	14,434	$	—

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Securities Sold Under Agreements to Repurchase (Tables)

3 Months Ended

Mar. 31, 2019

Brokers and Dealers [Abstract]

Schedule of Securities Sold Under Agreements to Repurchase and Securities Pledged

Company securities sold under agreements to repurchase and securities pledged were as follows by collateral type and maturity as of: 

(In thousands)	March 31, 2019		December 31, 2018
Fair value of pledged securities - overnight and continuous:
Mortgage-backed securities and collateralized mortgage obligations of U.S. Government Sponsored Entities	$	148,005	$	214,323

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Lease Commitments (Tables)

3 Months Ended

Mar. 31, 2019

Leases [Abstract]

Schedule of Supplemental Lease Cost Information Related to Operating Leases

Lease cost for the three months ended March 31, 2019 consists of:

	Three Months Ended
(In thousands)	March 31, 2019
Operating lease cost	$	1,405
Variable lease cost	306
Short-term lease cost	229
Sublease income	(128		)
Total lease cost	$	1,812

The following table provides supplemental information related to leases as of and for the three months ended March 31, 2019:

(In thousands, except for weighted average data)	March 31, 2019
Operating lease right-of-use assets	$	28,052
Operating lease liabilities	32,270
Cash paid for amounts included in the measurement of operating lease liabilities	1,512
Right-of-use assets obtained in exchange for new operating lease obligations	—
Weighted average remaining lease term for operating leases	9 years
Weighted average discount rate for operating leases	4.69		%

Schedule of Supplemental Balance Sheet Information Related to Operating Leases

The following table provides supplemental information related to leases as of and for the three months ended March 31, 2019:

(In thousands, except for weighted average data)	March 31, 2019
Operating lease right-of-use assets	$	28,052
Operating lease liabilities	32,270
Cash paid for amounts included in the measurement of operating lease liabilities	1,512
Right-of-use assets obtained in exchange for new operating lease obligations	—
Weighted average remaining lease term for operating leases	9 years
Weighted average discount rate for operating leases	4.69		%

Schedule of Maturities of Lease Liabilities

(In thousands)
Twelve Months Ended March 31,
2020	$	5,902
2021	5,114
2022	4,698
2023	3,907
2024	3,445
Thereafter	17,027
Total undiscounted cash flows	40,093
Less: Net present value adjustment	(7,823		)
Total	$	32,270

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Noninterest Income and Expense (Tables)

3 Months Ended

Mar. 31, 2019

Brokers and Dealers [Abstract]

Summary of Noninterest Income and Expense

Detail of noninterest income and expenses for the three months ended March 31, 2019 and 2018 are as follows:

	Three Months Ended March 31,
(In thousands)	2019			2018
Noninterest income
Service charges on deposit accounts	$	2,697		$	2,672
Trust fees	1,017			1,021
Mortgage banking fees	1,115			1,402
Brokerage commissions and fees	436			359
Marine finance fees	362			573
Interchange income	3,401			2,942
BOLI income	915			1,056
SBA gains	636			734
Other income	2,266			1,639
	12,845			12,398
Securities losses, net	(9		)	(102		)
Total	$	12,836		$	12,296
Noninterest expense
Salaries and wages	$	18,506		$	15,381
Employee benefits	4,206			3,081
Outsourced data processing costs	3,845			3,679
Telephone/data lines	811			612
Occupancy	3,807			3,117
Furniture and equipment	1,757			1,457
Marketing	1,132			1,252
Legal and professional fees	2,847			1,973
FDIC assessments	488			598
Amortization of intangibles	1,458			989
Foreclosed property expense and net (gain)/loss on sale	(40		)	192
Other	4,282			4,833
Total	$	43,099		$	37,164

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Fair Value (Tables)

3 Months Ended

Mar. 31, 2019

Fair Value Disclosures [Abstract]

Schedule of Fair Value of Assets Measured on Recurring and Nonrecurring Basis

Under ASC Topic 820, fair value measurements for items measured at fair value on a recurring and nonrecurring basis at March 31, 2019 and December 31, 2018 included:

(In thousands)	Fair Value Measurements		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
March 31, 2019
Available for sale debt securities1	$	877,549	$	100	$	877,449	$	—
Loans held for sale2	13,900		—		13,900		—
Loans3	8,312		—		2,102		6,210
Other real estate owned4	11,921		—		313		11,608
Equity securities5	6,283		6,283		—		—
December 31, 2018
Available for sale debt securities1,5	$	865,831	$	100	$	865,731	$	—
Loans held for sale2	11,873		—		11,873		—
Loans3	8,590		—		2,290		6,300
Other real estate owned4	12,802		—		297		12,505
Equity securities5	6,205		6,205		—		—
1See Note D for further detail of fair value of individual investment categories.
2Recurring fair value basis determined using observable market data.
3See Note E. Nonrecurring fair value adjustments to loans identified as impaired reflect full or partial write-downs that are based on the loan’s observable market price or current appraised value of the collateral in accordance with ASC Topic 310.
4Fair value is measured on a nonrecurring basis in accordance with ASC Topic 360.
5An investment in shares of a mutual fund that invests primarily in CRA-qualified debt securities, reported at fair value in Other Assets. Recurring fair value basis is determined using market quotations.

Schedule of Aggregate Fair Value and Contractual Balance of Loans for Sale

The aggregate fair value and contractual balance of loans held for sale as of March 31, 2019 and December 31, 2018 is as follows:

(In thousands)	March 31, 2019		December 31, 2018
Aggregate fair value	$	13,900	$	11,873
Contractual balance	13,399		11,562
Excess	501		311

Schedule of Carrying Amount and Fair Value of Other Significant Financial Instruments Not Measured on a Recurring Basis

The carrying amount and fair value of the Company’s other financial instruments that were not disclosed previously in the balance sheet and for which carrying amount is not fair value as of March 31, 2019 and December 31, 2018 is as follows:

(In thousands)	Carrying Amount		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
March 31, 2019
Financial Assets
Debt securities held to maturity1	$	295,485	$	—	$	291,340	$	—
Time deposits with other banks	8,174		—		—		8,105
Loans, net	4,787,307		—		—		4,760,789
Financial Liabilities
Deposit liabilities	5,605,578		—		—		5,603,019
Federal Home Loan Bank (FHLB) borrowings	3,000		—		—		3,000
Subordinated debt	70,874		—		61,039		—
December 31, 2018
Financial Assets
Debt securities held to maturity1	$	357,949	$	—	$	349,895	$	—
Time deposits with other banks	8,243		—		—		8,132
Loans, net	4,784,201		—		—		4,835,248
Financial Liabilities
Deposit liabilities	5,177,240		—		—		5,172,098
Federal Home Loan Bank (FHLB) borrowings	380,000		—		—		380,027
Subordinated debt	70,804		—		61,224		—
1See Note D for further detail of individual investment categories.

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Business Combinations (Tables)

3 Months Ended

Mar. 31, 2019

Business Combinations [Abstract]

Summary of Purchase Price Calculation

(In thousands, except per share data)	October 19, 2018
Shares exchanged for cash	$	5,462
Per share exchange ratio	0.7324
Number of shares of common stock issued	4,000
Multiplied by common stock price per share on October 19, 2018	$	26.87
Value of common stock issued	107,486
Cash paid for First Green vested stock options	6,558
Total purchase price	$	114,044

Schedule of Business Acquisitions

The adjustments reflected in the table below are the result of information obtained subsequent to the initial measurement.

(In thousands)	Initially Measured October 19, 2018		Measurement Period Adjustments			As Adjusted October 19, 2018
Assets:
Cash	$	29,434	$	—		$	29,434
Investment securities	32,145		—			32,145
Loans, net	631,497		—			631,497
Fixed assets	16,828		—			16,828
Other real estate owned	410		—			410
Core deposit intangibles	10,170		(678		)	9,492
Goodwill	56,198		506			56,704
Other assets	40,669		172			40,841
Totals	$	817,351	$	—		$	817,351
Liabilities:
Deposits	$	624,289	$	—		$	624,289
Other liabilities	79,018		—			79,018
Totals	$	703,307	$	—		$	703,307

Schedule of Fair Value of Acquired Loans and Unpaid Principal Balance

The table below presents information with respect to the fair value of acquired loans, as well as their unpaid principal balance (“Book Balance”) at acquisition date.

	October 19, 2018
(In thousands)	Book Balance		Fair Value
Loans:
Single family residential real estate	$	101,674	$	101,119
Commercial real estate	437,767		406,613
Construction/development/land	61,195		58,385
Commercial loans	56,288		54,973
Consumer and other loans	9,156		8,942
Purchased Credit Impaired	2,136		1,465
Total acquired loans	$	668,216	$	631,497

Schedule of Contractually Required Principal and Interest Payments Adjusted for Estimated Prepayments

The table below summarizes the total contractually required principal and interest cash payments, management’s estimate of expected total cash payments and fair value of the loans as of October 19, 2018 for purchased credit impaired loans. Contractually required principal and interest payments have been adjusted for estimated prepayments.

(In thousands)	October 19, 2018
Contractually required principal and interest	$	2,136
Non-accretable difference	(671		)
Cash flows expected to be collected	1,465
Accretable yield	—
Total purchased credit-impaired loan acquired	$	1,465

Summary of Pro-Forma Data

Pro-forma data for the three months ended March 31, 2018 presents information as if the acquisition of First Green occurred at the beginning of 2018, as follows:

	Three Months Ended March 31,
(In thousands, except per share amounts)	2018
Net interest income	$	57,416
Net income	22,065
EPS - basic	$	0.43
EPS - diluted	0.43

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Basis of Presentation - Narrative (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Jan. 01, 2019
Accounting Policies [Line Items]
Operating lease right-of-use assets	$ 28,052
Operating lease liabilities	$ 32,270
Accounting Standards Update 2016-02
Accounting Policies [Line Items]
Operating lease right-of-use assets		$ 29,000
Operating lease liabilities		33,000
Right-of-use assets recognized from acquired operating leases		4,000
Liabilities recognized from acquired operating leases		$ 4,000

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Basis of Presentation - Schedule of Reclassification of Debt Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Jan. 01, 2019	Dec. 31, 2018
Schedule of Available-for-sale Securities [Line Items]
Held to maturity, amortized cost	$ 882,557		$ 882,872
Available for sale, fair value	877,549		865,831
Private mortgage-backed securities and collateralized mortgage obligations
Schedule of Available-for-sale Securities [Line Items]
Held to maturity, amortized cost	67,206		55,569
Available for sale, fair value	67,935		55,728
Collateralized loan obligations
Schedule of Available-for-sale Securities [Line Items]
Held to maturity, amortized cost	243,546		212,807
Available for sale, fair value	$ 241,739		$ 209,366
Accounting Standards Update 2017-12
Schedule of Available-for-sale Securities [Line Items]
Held to maturity, amortized cost		$ 53,526
Net Unrealized Gain (Loss) Reflected in OCI		(730)
Available for sale, fair value		52,796
Accounting Standards Update 2017-12 | Private mortgage-backed securities and collateralized mortgage obligations
Schedule of Available-for-sale Securities [Line Items]
Held to maturity, amortized cost		21,526
Net Unrealized Gain (Loss) Reflected in OCI		147
Available for sale, fair value		21,673
Accounting Standards Update 2017-12 | Collateralized loan obligations
Schedule of Available-for-sale Securities [Line Items]
Held to maturity, amortized cost		32,000
Net Unrealized Gain (Loss) Reflected in OCI		(877)
Available for sale, fair value		$ 31,123

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Earnings per Share - Narrative (Details) - shares	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Earnings Per Share [Abstract]
Antidilutive securities excluded from diluted earnings per share calculation (in shares)	487,000	274,000

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Earnings per Share - Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Basic earnings per share
Net income	$ 22,705	$ 18,027
Average common shares outstanding (in shares)	51,359	46,952
Net income per share (in dollars per share)	$ 0.44	$ 0.38
Diluted earnings per share
Average common shares outstanding (in shares)	51,359	46,952
Add: Dilutive effect of employee restricted stock and stock options (in shares)	680	736
Average diluted shares outstanding (in shares)	52,039	47,688
Net income per share (in dollars per share)	$ 0.44	$ 0.38

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Securities - Amortized Cost and Fair Value of Securities Available for Sale and Held for Investment (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Debt securities available for sale
Available for sale, amortized cost, total	$ 882,557	$ 882,872
Available for sale, gross unrealized gains	3,473	1,306
Available for sale, gross unrealized losses	(8,481)	(18,347)
Available for sale, fair value	877,549	865,831
Debt securities held to maturity
Held to maturity, amortized cost, total	295,485	357,949
Held to maturity, gross unrealized gains	356	277
Held to maturity, gross unrealized losses	(4,501)	(8,331)
Held to maturity, fair value	291,340	349,895
U.S. Treasury securities and obligations of U.S. Government Sponsored Entities
Debt securities available for sale
Available for sale, amortized cost, total	6,296	7,200
Available for sale, gross unrealized gains	105	106
Available for sale, gross unrealized losses	(4)	(6)
Available for sale, fair value	6,397	7,300
Mortgage-backed securities and collateralized mortgage obligations of U.S. Government Sponsored Entities
Debt securities available for sale
Available for sale, amortized cost, total	528,404	567,753
Available for sale, gross unrealized gains	1,777	300
Available for sale, gross unrealized losses	(6,228)	(14,047)
Available for sale, fair value	523,953	554,006
Debt securities held to maturity
Held to maturity, amortized cost, total	295,485	304,423
Held to maturity, gross unrealized gains	356	0
Held to maturity, gross unrealized losses	(4,501)	(7,324)
Held to maturity, fair value	291,340	297,099
Private mortgage-backed securities and collateralized mortgage obligations
Debt securities available for sale
Available for sale, amortized cost, total	67,206	55,569
Available for sale, gross unrealized gains	968	560
Available for sale, gross unrealized losses	(239)	(401)
Available for sale, fair value	67,935	55,728
Debt securities held to maturity
Held to maturity, amortized cost, total		21,526
Held to maturity, gross unrealized gains		277
Held to maturity, gross unrealized losses		(130)
Held to maturity, fair value	0	21,673
Collateralized loan obligations
Debt securities available for sale
Available for sale, amortized cost, total	243,546	212,807
Available for sale, gross unrealized gains	2	1
Available for sale, gross unrealized losses	(1,809)	(3,442)
Available for sale, fair value	241,739	209,366
Debt securities held to maturity
Held to maturity, amortized cost, total		32,000
Held to maturity, gross unrealized gains		0
Held to maturity, gross unrealized losses		(877)
Held to maturity, fair value		31,123
Obligations of state and political subdivisions
Debt securities available for sale
Available for sale, amortized cost, total	37,105	39,543
Available for sale, gross unrealized gains	621	339
Available for sale, gross unrealized losses	(201)	(451)
Available for sale, fair value	$ 37,525	$ 39,431

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Securities - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Jan. 01, 2019	Dec. 31, 2018
Schedule of Available-for-sale Securities [Line Items]
Proceeds from sale of debt securities available for sale	$ 35,048	$ 0
Gross gains from sale of securities	200
Gross losses from sale of securities	(300)
Gain (loss) in investment in shares of mutual funds	100
Decline in mutual fund investment	9	$ 102
Held to maturity, amortized cost	882,557			$ 882,872
Unrealized losses from securities transferred from available for sale to held to maturity	3,100
Unamortized balance of securities transferred from available for sale to held to maturity	600
Unrealized losses on mortgage backed securities of government sponsored entities	12,982			26,678
Fair value of mortgage backed securities of government sponsored entities	851,998			$ 1,124,777
Other assets	30,900
Investment in mutual fund carried at fair value	$ 6,300
Shares held (in shares)	51,413,988			51,361,079
Visa | Common Class B
Schedule of Available-for-sale Securities [Line Items]
Shares held (in shares)	11,330
Visa | Common Class A
Schedule of Available-for-sale Securities [Line Items]
Conversion rate of Class A stock for each share of Class B stock (shares)	$ 1.6298
Shares issued (in shares)	18,465.634
CRA - Qualified Mutual Fund
Schedule of Available-for-sale Securities [Line Items]
Decline in mutual fund investment	$ 100
Mortgage-backed securities and collateralized mortgage obligations of U.S. Government Sponsored Entities
Schedule of Available-for-sale Securities [Line Items]
Held to maturity, amortized cost	528,404			$ 567,753
Unrealized losses on mortgage backed securities of government sponsored entities	10,729			21,371
Fair value of mortgage backed securities of government sponsored entities	577,611			823,604
Collateralized loan obligations
Schedule of Available-for-sale Securities [Line Items]
Held to maturity, amortized cost	286,947
Unrealized losses on mortgage backed securities of government sponsored entities	1,809			4,319
Fair value of mortgage backed securities of government sponsored entities	238,777			$ 238,894
Carrying Value | Public and Trust Deposits
Schedule of Available-for-sale Securities [Line Items]
Fair value of debt securities pledged as collateral	122,300
Carrying Value | Repurchase Agreement
Schedule of Available-for-sale Securities [Line Items]
Fair value of debt securities pledged as collateral	$ 148,000
Accounting Standards Update 2017-12
Schedule of Available-for-sale Securities [Line Items]
Held to maturity, amortized cost			$ 53,526
Net Unrealized Gain (Loss) Reflected in OCI			$ (730)

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Securities - Amortized Cost and Fair Value of Securities by Contractual Maturity (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Held-to-maturity Securities, Debt Maturities, Net Carrying Amount [Abstract]
Held to maturity, amortized cost, total	$ 295,485	$ 357,949
Held-to-maturity Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]
Held to maturity, fair value, total	291,340	349,895
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]
Available for sale, amortized cost, total	882,557	882,872
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]
Available for sale, fair value, total	877,549	865,831
Mortgage-backed securities and collateralized mortgage obligations of U.S. Government Sponsored Entities
Held-to-maturity Securities, Debt Maturities, Net Carrying Amount [Abstract]
Held to maturity, amortized cost, total	295,485
Held-to-maturity Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]
Held to maturity, fair value, total	291,340	297,099
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]
Available for sale, amortized cost, total	528,404	567,753
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]
Available for sale, fair value, total	523,953	554,006
Private mortgage-backed securities and collateralized mortgage obligations
Held-to-maturity Securities, Debt Maturities, Net Carrying Amount [Abstract]
Held to maturity, amortized cost, total	0
Held-to-maturity Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]
Held to maturity, fair value, total	0	21,673
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]
Available for sale, amortized cost, total	67,206	55,569
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]
Available for sale, fair value, total	67,935	$ 55,728
Collateralized loan obligations
Held-to-maturity Securities, Debt Maturities, Net Carrying Amount [Abstract]
Held to maturity, amortized cost, due in less than one year	0
Held to maturity, amortized cost, due after one year through five years	0
Held to maturity, amortized cost, due after five years through ten years	0
Held to maturity, amortized cost, due after ten years	0
Held to maturity, amortized cost, total	0
Held-to-maturity Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]
Held to maturity, fair value, due in less than one year	0
Held to maturity, fair value, due after one year through five years	0
Held to maturity, fair value, due after five years through ten years	0
Held to maturity, fair value, due after ten years	0
Held to maturity, fair value, total	0
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]
Available for sale, amortized cost, due in less than one year	11,288
Available for sale, amortized cost, due after one year through five years	102,835
Available for sale, amortized cost, due after five years through ten years	169,369
Available for sale, amortized cost, due after ten years	3,455
Available for sale, amortized cost, total	286,947
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]
Available for sale, fair value, due in less than one year	11,268
Available for sale, fair value, due after one year through five years	102,588
Available for sale, fair value, due after five years through ten years	168,212
Available for sale, fair value, due after ten years	3,593
Available for sale, fair value, total	$ 285,661

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Securities - Schedule of Unrealized Loss and Fair Value on Investments (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Fair Value
Less Than 12 Months	$ 339,727	$ 478,423
12 Months or Longer	512,271	646,354
Total	851,998	1,124,777
Unrealized Losses
Less Than 12 Months	(2,551)	(7,140)
12 Months or Longer	(10,431)	(19,538)
Total	(12,982)	(26,678)
Collateralized loan obligations
Fair Value
Less Than 12 Months	238,777	238,894
12 Months or Longer	0	0
Total	238,777	238,894
Unrealized Losses
Less Than 12 Months	(1,809)	(4,319)
12 Months or Longer	0	0
Total	(1,809)	(4,319)
Mortgage-backed securities and collateralized mortgage obligations of U.S. Government Sponsored Entities
Fair Value
Less Than 12 Months	80,889	200,184
12 Months or Longer	496,722	623,420
Total	577,611	823,604
Unrealized Losses
Less Than 12 Months	(512)	(2,235)
12 Months or Longer	(10,217)	(19,136)
Total	(10,729)	(21,371)
Private mortgage-backed securities and collateralized mortgage obligations
Fair Value
Less Than 12 Months	20,061	20,071
12 Months or Longer	2,038	12,739
Total	22,099	32,810
Unrealized Losses
Less Than 12 Months	(230)	(344)
12 Months or Longer	(9)	(187)
Total	(239)	(531)
Obligations of state and political subdivisions
Fair Value
Less Than 12 Months	0	19,175
12 Months or Longer	12,966	9,553
Total	12,966	28,728
Unrealized Losses
Less Than 12 Months	0	(241)
12 Months or Longer	(201)	(210)
Total	(201)	(451)
U.S. Treasury securities and obligations of U.S. Government Sponsored Entities
Fair Value
Less Than 12 Months	0	99
12 Months or Longer	545	642
Total	545	741
Unrealized Losses
Less Than 12 Months	0	(1)
12 Months or Longer	(4)	(5)
Total	$ (4)	$ (6)

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Loans - Schedule of Portfolio Loans, Purchased Credit Impaired Loans and Purchased Unimpaired Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	$ 4,828,441	$ 4,825,214
Deferred costs	17,800	16,900
Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	417,565	443,568
Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	2,162,417	2,132,066
Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	1,329,166	1,324,377
Commercial and financial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	712,879	722,322
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	206,414	202,881
Portfolio Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	3,667,222	3,588,251
Portfolio Loans | Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	308,846	301,473
Portfolio Loans | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	1,478,955	1,437,989
Portfolio Loans | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	1,077,523	1,055,525
Portfolio Loans | Commercial and financial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	606,179	603,057
Portfolio Loans | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	195,719	190,207
PCI Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	13,788	14,434
PCI Loans | Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	153	151
PCI Loans | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	10,393	10,828
PCI Loans | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	2,575	2,718
PCI Loans | Commercial and financial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	667	737
PCI Loans | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	0	0
PULs
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	1,147,431	1,222,529
PULs | Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	108,566	141,944
PULs | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	673,069	683,249
PULs | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	249,068	266,134
PULs | Commercial and financial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	106,033	118,528
PULs | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	$ 10,695	$ 12,674

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Loans - Past Due Financing Receivables (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	$ 4,795,012	$ 4,775,965
Nonaccrual	22,413	26,476
Total Financing Receivables	4,828,441	4,825,214
Accruing 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, recorded investment, past due	7,705	19,607
Accruing 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, recorded investment, past due	2,547	2,640
Accruing Greater Than 90 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, recorded investment, past due	764	526
Construction and land development
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Financing Receivables	417,565	443,568
Commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Financing Receivables	2,162,417	2,132,066
Residential real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Financing Receivables	1,329,166	1,324,377
Commercial and financial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Financing Receivables	712,879	722,322
Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Financing Receivables	206,414	202,881
Portfolio Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	3,643,035	3,557,127
Nonaccrual	15,423	15,783
Total Financing Receivables	3,667,222	3,588,251
Portfolio Loans | Accruing 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, recorded investment, past due	5,881	12,296
Portfolio Loans | Accruing 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, recorded investment, past due	2,547	2,609
Portfolio Loans | Accruing Greater Than 90 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, recorded investment, past due	336	436
Portfolio Loans | Construction and land development
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	308,819	301,348
Nonaccrual	27	28
Total Financing Receivables	308,846	301,473
Portfolio Loans | Construction and land development | Accruing 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, recorded investment, past due	0	97
Portfolio Loans | Construction and land development | Accruing 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, recorded investment, past due	0	0
Portfolio Loans | Construction and land development | Accruing Greater Than 90 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, recorded investment, past due	0	0
Portfolio Loans | Commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	1,471,607	1,427,413
Nonaccrual	5,368	6,486
Total Financing Receivables	1,478,955	1,437,989
Portfolio Loans | Commercial real estate | Accruing 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, recorded investment, past due	1,016	3,852
Portfolio Loans | Commercial real estate | Accruing 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, recorded investment, past due	709	97
Portfolio Loans | Commercial real estate | Accruing Greater Than 90 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, recorded investment, past due	255	141
Portfolio Loans | Residential real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	1,068,869	1,044,375
Nonaccrual	7,977	7,806
Total Financing Receivables	1,077,523	1,055,525
Portfolio Loans | Residential real estate | Accruing 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, recorded investment, past due	612	2,524
Portfolio Loans | Residential real estate | Accruing 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, recorded investment, past due	65	525
Portfolio Loans | Residential real estate | Accruing Greater Than 90 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, recorded investment, past due	0	295
Portfolio Loans | Commercial and financial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	599,068	594,930
Nonaccrual	1,956	1,280
Total Financing Receivables	606,179	603,057
Portfolio Loans | Commercial and financial | Accruing 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, recorded investment, past due	3,724	5,186
Portfolio Loans | Commercial and financial | Accruing 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, recorded investment, past due	1,350	1,661
Portfolio Loans | Commercial and financial | Accruing Greater Than 90 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, recorded investment, past due	81	0
Portfolio Loans | Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	194,672	189,061
Nonaccrual	95	183
Total Financing Receivables	195,719	190,207
Portfolio Loans | Consumer | Accruing 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, recorded investment, past due	529	637
Portfolio Loans | Consumer | Accruing 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, recorded investment, past due	423	326
Portfolio Loans | Consumer | Accruing Greater Than 90 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, recorded investment, past due	0	0
PULs
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	1,141,237	1,209,670
Nonaccrual	3,942	7,096
Total Financing Receivables	1,147,431	1,222,529
PULs | Accruing 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, recorded investment, past due	1,824	5,642
PULs | Accruing 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, recorded investment, past due	0	31
PULs | Accruing Greater Than 90 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, recorded investment, past due	428	90
PULs | Construction and land development
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	108,566	140,013
Nonaccrual	0	0
Total Financing Receivables	108,566	141,944
PULs | Construction and land development | Accruing 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, recorded investment, past due	0	1,931
PULs | Construction and land development | Accruing 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, recorded investment, past due	0	0
PULs | Construction and land development | Accruing Greater Than 90 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, recorded investment, past due	0	0
PULs | Commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	671,195	680,060
Nonaccrual	1,338	1,343
Total Financing Receivables	673,069	683,249
PULs | Commercial real estate | Accruing 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, recorded investment, past due	536	1,846
PULs | Commercial real estate | Accruing 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, recorded investment, past due	0	0
PULs | Commercial real estate | Accruing Greater Than 90 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, recorded investment, past due	0	0
PULs | Residential real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	246,583	260,781
Nonaccrual	769	3,740
Total Financing Receivables	249,068	266,134
PULs | Residential real estate | Accruing 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, recorded investment, past due	1,288	1,523
PULs | Residential real estate | Accruing 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, recorded investment, past due	0	0
PULs | Residential real estate | Accruing Greater Than 90 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, recorded investment, past due	428	90
PULs | Commercial and financial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	104,229	116,173
Nonaccrual	1,804	2,013
Total Financing Receivables	106,033	118,528
PULs | Commercial and financial | Accruing 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, recorded investment, past due	0	342
PULs | Commercial and financial | Accruing 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, recorded investment, past due	0	0
PULs | Commercial and financial | Accruing Greater Than 90 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, recorded investment, past due	0	0
PULs | Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	10,664	12,643
Nonaccrual	31	0
Total Financing Receivables	10,695	12,674
PULs | Consumer | Accruing 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, recorded investment, past due	0	0
PULs | Consumer | Accruing 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, recorded investment, past due	0	31
PULs | Consumer | Accruing Greater Than 90 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, recorded investment, past due	0	0
Purchased Credit Impaired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	10,740	9,168
Nonaccrual	3,048	3,597
Total Financing Receivables	13,788	14,434
Purchased Credit Impaired Loans | Accruing 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, recorded investment, past due	0	1,669
Purchased Credit Impaired Loans | Accruing 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, recorded investment, past due	0	0
Purchased Credit Impaired Loans | Accruing Greater Than 90 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, recorded investment, past due	0	0
Purchased Credit Impaired Loans | Construction and land development
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	138	135
Nonaccrual	15	16
Total Financing Receivables	153	151
Purchased Credit Impaired Loans | Construction and land development | Accruing 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, recorded investment, past due	0	0
Purchased Credit Impaired Loans | Construction and land development | Accruing 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, recorded investment, past due	0	0
Purchased Credit Impaired Loans | Construction and land development | Accruing Greater Than 90 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, recorded investment, past due	0	0
Purchased Credit Impaired Loans | Commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	9,395	8,403
Nonaccrual	998	1,391
Total Financing Receivables	10,393	10,828
Purchased Credit Impaired Loans | Commercial real estate | Accruing 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, recorded investment, past due	0	1,034
Purchased Credit Impaired Loans | Commercial real estate | Accruing 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, recorded investment, past due	0	0
Purchased Credit Impaired Loans | Commercial real estate | Accruing Greater Than 90 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, recorded investment, past due	0	0
Purchased Credit Impaired Loans | Residential real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	558	556
Nonaccrual	2,017	2,162
Total Financing Receivables	2,575	2,718
Purchased Credit Impaired Loans | Residential real estate | Accruing 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, recorded investment, past due	0	0
Purchased Credit Impaired Loans | Residential real estate | Accruing 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, recorded investment, past due	0	0
Purchased Credit Impaired Loans | Residential real estate | Accruing Greater Than 90 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, recorded investment, past due	0	0
Purchased Credit Impaired Loans | Commercial and financial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	649	74
Nonaccrual	18	28
Total Financing Receivables	667	737
Purchased Credit Impaired Loans | Commercial and financial | Accruing 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, recorded investment, past due	0	635
Purchased Credit Impaired Loans | Commercial and financial | Accruing 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, recorded investment, past due	0	0
Purchased Credit Impaired Loans | Commercial and financial | Accruing Greater Than 90 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, recorded investment, past due	0	0
Purchased Credit Impaired Loans | Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	0	0
Nonaccrual	0	0
Total Financing Receivables	0	0
Purchased Credit Impaired Loans | Consumer | Accruing 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, recorded investment, past due	0	0
Purchased Credit Impaired Loans | Consumer | Accruing 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, recorded investment, past due	0	0
Purchased Credit Impaired Loans | Consumer | Accruing Greater Than 90 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, recorded investment, past due	$ 0	$ 0

XML

Loans - Risk Categories of Loans by Class of Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Financing Receivable, Recorded Investment [Line Items]
Loans	$ 4,828,441	$ 4,825,214
Pass
Financing Receivable, Recorded Investment [Line Items]
Loans	4,690,296	4,694,297
Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	85,110	67,296
Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	53,035	63,596
Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans	0	25
Construction and land development
Financing Receivable, Recorded Investment [Line Items]
Loans	417,565	443,568
Construction and land development | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans	406,010	428,044
Construction and land development | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	11,262	10,429
Construction and land development | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	293	5,095
Construction and land development | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Loans	2,162,417	2,132,066
Commercial real estate | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans	2,080,415	2,063,589
Commercial real estate | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	57,732	41,429
Commercial real estate | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	24,270	27,048
Commercial real estate | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Residential real estate
Financing Receivable, Recorded Investment [Line Items]
Loans	1,329,166	1,324,377
Residential real estate | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans	1,304,847	1,296,634
Residential real estate | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	3,953	3,654
Residential real estate | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	20,366	24,089
Residential real estate | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Commercial and financial
Financing Receivable, Recorded Investment [Line Items]
Loans	712,879	722,322
Commercial and financial | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans	696,837	707,663
Commercial and financial | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	9,013	8,387
Commercial and financial | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	7,029	6,247
Commercial and financial | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans	0	25
Consumer
Financing Receivable, Recorded Investment [Line Items]
Loans	206,414	202,881
Consumer | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans	202,187	198,367
Consumer | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	3,150	3,397
Consumer | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	1,077	1,117
Consumer | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans	$ 0	$ 0

XML

Loans - Changes in Accretable Yield on PCI Loans (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]
Beginning balance	$ 2,924	$ 3,699
Additions	0	0
Deletions	0	(43)
Accretion	(776)	(443)
Reclassification from non-accretable difference	460	339
Ending balance	$ 2,608	$ 3,552

XML

Loans - Narrative (Details)	3 Months Ended
	Mar. 31, 2019 USD ($) contract	Mar. 31, 2018 USD ($) contract	Dec. 31, 2018 USD ($)
Receivables [Abstract]
Number of loans under trouble debt restructuring | contract	2	0
Value of loans under trouble debt restructuring	$ 2,000,000	$ 0
Troubled debt restructuring outstanding amount	14,900,000		$ 13,300,000
Average impaired loans	36,300,000	31,100,000
Interest income recorded on impaired loans	400,000	400,000
Interest income related to impaired loans with impairment measured on present value of expected future cash flows	$ 35,000	$ 88,000

XML

Loans - Impaired Financing Receivables, Excluding PCI Loans and Valuation Allowances (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Recorded Investment
Total	$ 35,402	$ 36,700
Unpaid Principal Balance
Total	45,857	46,545
Related Valuation Allowance	2,370	2,728
Construction and land development
Recorded Investment
Impaired Loans with No Related Allowance Recorded	15	15
Impaired Loans with an Allowance Recorded	183	196
Total	198	211
Unpaid Principal Balance
Impaired Loans with No Related Allowance Recorded	221	229
Impaired Loans with an Allowance Recorded	197	211
Total	418	440
Related Valuation Allowance	20	22
Commercial real estate
Recorded Investment
Impaired Loans with No Related Allowance Recorded	5,136	3,852
Impaired Loans with an Allowance Recorded	9,624	9,786
Total	14,760	13,638
Unpaid Principal Balance
Impaired Loans with No Related Allowance Recorded	6,406	5,138
Impaired Loans with an Allowance Recorded	12,791	12,967
Total	19,197	18,105
Related Valuation Allowance	353	369
Residential real estate
Recorded Investment
Impaired Loans with No Related Allowance Recorded	10,294	13,510
Impaired Loans with an Allowance Recorded	5,688	5,537
Total	15,982	19,047
Unpaid Principal Balance
Impaired Loans with No Related Allowance Recorded	14,873	18,111
Impaired Loans with an Allowance Recorded	5,820	5,664
Total	20,693	23,775
Related Valuation Allowance	577	805
Commercial and financial
Recorded Investment
Impaired Loans with No Related Allowance Recorded	2,036	1,191
Impaired Loans with an Allowance Recorded	2,024	2,131
Total	4,060	3,322
Unpaid Principal Balance
Impaired Loans with No Related Allowance Recorded	3,103	1,414
Impaired Loans with an Allowance Recorded	2,020	2,309
Total	5,123	3,723
Related Valuation Allowance	1,329	1,498
Consumer
Recorded Investment
Impaired Loans with No Related Allowance Recorded	146	280
Impaired Loans with an Allowance Recorded	256	202
Total	402	482
Unpaid Principal Balance
Impaired Loans with No Related Allowance Recorded	158	291
Impaired Loans with an Allowance Recorded	268	211
Total	426	502
Related Valuation Allowance	$ 91	$ 34

XML

Allowance for Loan Losses - Activity in Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	$ 32,423	$ 27,122
Provision for Loan Losses	1,397	1,085
Charge- Offs	(1,479)	(505)
Recoveries	516	504
TDR Allowance Adjustments	(35)	(88)
Ending Balance	32,822	28,118
Construction and land development
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	2,233	1,642
Provision for Loan Losses	83	411
Charge- Offs	0	0
Recoveries	4	5
TDR Allowance Adjustments	0	0
Ending Balance	2,320	2,058
Commercial real estate
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	11,112	9,285
Provision for Loan Losses	625	(575)
Charge- Offs	(16)	0
Recoveries	47	147
TDR Allowance Adjustments	(15)	(15)
Ending Balance	11,753	8,842
Residential real estate
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	7,775	7,131
Provision for Loan Losses	(414)	788
Charge- Offs	(36)	0
Recoveries	139	200
TDR Allowance Adjustments	(19)	(72)
Ending Balance	7,445	8,047
Commercial and financial
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	8,585	7,297
Provision for Loan Losses	853	270
Charge- Offs	(944)	(198)
Recoveries	79	24
TDR Allowance Adjustments	0	0
Ending Balance	8,573	7,393
Consumer
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	2,718	1,767
Provision for Loan Losses	250	191
Charge- Offs	(483)	(307)
Recoveries	247	128
TDR Allowance Adjustments	(1)	(1)
Ending Balance	$ 2,731	$ 1,778

XML

Allowance for Loan Losses - Schedule of Loan Portfolio, Excluding PCI Loans and Related Allowance (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Recorded Investment
Individually Evaluated for Impairment	$ 35,402	$ 36,700
Collectively Evaluated for Impairment	4,779,251	4,774,080
Total	4,814,653	4,810,780
Associated Allowance
Individually Evaluated for Impairment	2,370	2,728
Collectively Evaluated for Impairment	30,452	29,695
Total	32,822	32,423
PCI Loans
Recorded Investment
Individually Evaluated for Impairment	13,788	14,434
Associated Allowance
Individually Evaluated for Impairment	0	0
Construction and land development
Recorded Investment
Individually Evaluated for Impairment	197	211
Collectively Evaluated for Impairment	417,215	443,206
Total	417,412	443,417
Associated Allowance
Individually Evaluated for Impairment	20	22
Collectively Evaluated for Impairment	2,300	2,211
Total	2,320	2,233
Construction and land development | PCI Loans
Recorded Investment
Individually Evaluated for Impairment	153	151
Associated Allowance
Individually Evaluated for Impairment	0	0
Commercial real estate
Recorded Investment
Individually Evaluated for Impairment	14,760	13,638
Collectively Evaluated for Impairment	2,137,264	2,107,600
Total	2,152,024	2,121,238
Associated Allowance
Individually Evaluated for Impairment	353	369
Collectively Evaluated for Impairment	11,400	10,743
Total	11,753	11,112
Commercial real estate | PCI Loans
Recorded Investment
Individually Evaluated for Impairment	10,393	10,828
Associated Allowance
Individually Evaluated for Impairment	0	0
Residential real estate
Recorded Investment
Individually Evaluated for Impairment	15,982	19,047
Collectively Evaluated for Impairment	1,310,609	1,302,612
Total	1,326,591	1,321,659
Associated Allowance
Individually Evaluated for Impairment	577	805
Collectively Evaluated for Impairment	6,868	6,970
Total	7,445	7,775
Residential real estate | PCI Loans
Recorded Investment
Individually Evaluated for Impairment	2,575	2,718
Associated Allowance
Individually Evaluated for Impairment	0	0
Commercial and financial
Recorded Investment
Individually Evaluated for Impairment	4,061	3,322
Collectively Evaluated for Impairment	708,151	718,263
Total	712,212	721,585
Associated Allowance
Individually Evaluated for Impairment	1,329	1,498
Collectively Evaluated for Impairment	7,244	7,087
Total	8,573	8,585
Commercial and financial | PCI Loans
Recorded Investment
Individually Evaluated for Impairment	667	737
Associated Allowance
Individually Evaluated for Impairment	0	0
Consumer
Recorded Investment
Individually Evaluated for Impairment	402	482
Collectively Evaluated for Impairment	206,012	202,399
Total	206,414	202,881
Associated Allowance
Individually Evaluated for Impairment	91	34
Collectively Evaluated for Impairment	2,640	2,684
Total	2,731	2,718
Consumer | PCI Loans
Recorded Investment
Individually Evaluated for Impairment	0	0
Associated Allowance
Individually Evaluated for Impairment	$ 0	$ 0

XML

Allowance for Loan Losses - Narrative (Details) - Loans - Bank Shares, Inc - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Financing Receivable, Modifications [Line Items]
Remaining fair value adjustment for loans acquired	$ 43.8	$ 47.0
Percentage of fair value adjustment for loans acquired	3.80%	3.90%

XML

Securities Sold Under Agreements to Repurchase - Schedule of Securities Sold Under Agreements to Repurchase and Securities Pledged (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Mortgage-backed securities and collateralized mortgage obligations of U.S. Government Sponsored Entities
Securities Financing Transaction [Line Items]
Mortgage backed securities and collateralized mortgage obligations of U.S. Government Sponsored Entities	$ 148,005	$ 214,323

XML

Lease Commitments - Lease Cost Information Related to Operating Leases (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019 USD ($)
Leases [Abstract]
Operating lease cost	$ 1,405
Variable lease cost	306
Short-term lease cost	229
Sublease income	(128)
Total lease cost	$ 1,812

XML

Lease Commitments - Supplemental Balance Sheet and Cash Flow Information Related to Operating Leases (Details)	3 Months Ended
	Mar. 31, 2019 USD ($)
Leases [Abstract]
Operating lease right-of-use assets	$ 28,052,000
Operating lease liabilities	32,270,000
Cash paid for amounts included in the measurement of operating lease liabilities	1,512,000
Right-of-use assets obtained in exchange for new operating lease obligations	$ 0
Weighted average remaining lease term for operating leases	9 years
Weighted average discount rate for operating leases	4.69%

XML

Lease Commitments - Maturities of Lease Liabilities (Details) $ in Thousands	Mar. 31, 2019 USD ($)
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
2019	$ 5,902
2020	5,114
2021	4,698
2022	3,907
2023	3,445
Thereafter	17,027
Total undiscounted cash flows	40,093
Less: Net present value adjustment	(7,823)
Total	$ 32,270

XML

Noninterest Income and Expense - Summary of Noninterest Income and Expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Noninterest income
Service charges on deposit accounts	$ 2,697	$ 2,672
Trust fees	1,017	1,021
Mortgage banking fees	1,115	1,402
Brokerage commissions and fees	436	359
Marine finance fees	362	573
Interchange income	3,401	2,942
BOLI income	915	1,056
SBA gains	636	734
Other income	2,266	1,639
Noninterest income, gross	12,845	12,398
Securities losses, net	(9)	(102)
Total	12,836	12,296
Noninterest expense
Salaries and wages	18,506	15,381
Employee benefits	4,206	3,081
Outsourced data processing costs	3,845	3,679
Telephone/data lines	811	612
Occupancy	3,807	3,117
Furniture and equipment	1,757	1,457
Marketing	1,132	1,252
Legal and professional fees	2,847	1,973
FDIC assessments	488	598
Amortization of intangibles	1,458	989
Foreclosed property expense and net (gain)/loss on sale	(40)	192
Other	4,282	4,833
Total	$ 43,099	$ 37,164

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Equity Capital - Narrative (Details)	Mar. 31, 2019
Equity [Abstract]
Regulatory threshold for well-capitalized institutions	6.50%

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Fair Value - Fair Value of Assets Measured on Recurring and Nonrecurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale debt securities	$ 877,549	$ 865,831
Loans held for sale	13,900	11,873
Other real estate owned	11,921	12,802
Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale debt securities	877,549	865,831
Loans held for sale	13,900	11,873
Equity securities	6,283	6,205
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale debt securities	100	100
Loans held for sale	0	0
Equity securities	6,283	6,205
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale debt securities	877,449	865,731
Loans held for sale	13,900	11,873
Equity securities	0	0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale debt securities	0	0
Loans held for sale	0	0
Equity securities	0	0
Fair Value, Measurements, Nonrecurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	8,312	8,590
Other real estate owned	11,921	12,802
Fair Value, Measurements, Nonrecurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	0	0
Other real estate owned	0	0
Fair Value, Measurements, Nonrecurring | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	2,102	2,290
Other real estate owned	313	297
Fair Value, Measurements, Nonrecurring | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	6,210	6,300
Other real estate owned	$ 11,608	$ 12,505

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Fair Value - Aggregate Fair Value and Contractual Balance of Loans for Sale (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Fair Value Disclosures [Abstract]
Aggregate fair value	$ 13,900	$ 11,873
Contractual balance	13,399	11,562
Excess	$ 501	$ 311

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Fair Value - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Average capitalization rate	7.60%
Specific reserve for impaired loans	$ 32,822	$ 32,423	$ 28,118	$ 27,122
Additions	1,200
Paydowns and chargeoffs	1,300
Additions to level 3 from foreclosed loans	400
Other Real Estate Owned
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of impaired loans	8,300	8,600
Specific reserve for impaired loans	2,400	$ 2,700
Reductions related to sale of loans	$ 1,300

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Fair Value - Carrying Amount and Fair Value of Other Significant Financial Instruments Not Measured on a Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Financial Assets
Debt securities held to maturity	$ 295,485	$ 357,949
Loans, net	4,795,619	4,792,791
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Financial Assets
Debt securities held to maturity	0	0
Time deposits with other banks	0	0
Loans, net	0	0
Financial Liabilities
Deposit liabilities	0	0
Federal Home Loan Bank (FHLB) borrowings	0	0
Subordinated debt	0	0
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)
Financial Assets
Debt securities held to maturity	291,340	349,895
Time deposits with other banks	0	0
Loans, net	0	0
Financial Liabilities
Deposit liabilities	0	0
Federal Home Loan Bank (FHLB) borrowings	0	0
Subordinated debt	61,039	61,224
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3)
Financial Assets
Debt securities held to maturity	0	0
Time deposits with other banks	8,105	8,132
Loans, net	4,760,789	4,835,248
Financial Liabilities
Deposit liabilities	5,603,019	5,172,098
Federal Home Loan Bank (FHLB) borrowings	3,000	380,027
Subordinated debt	0	0
Carrying Value | Fair Value, Measurements, Recurring
Financial Assets
Debt securities held to maturity	295,485	357,949
Time deposits with other banks	8,174	8,243
Loans, net	4,787,307	4,784,201
Financial Liabilities
Deposit liabilities	5,605,578	5,177,240
Federal Home Loan Bank (FHLB) borrowings	3,000	380,000
Subordinated debt	$ 70,874	$ 70,804

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Business Combinations - Narrative (Details) $ in Millions	Oct. 19, 2018 USD ($) branch
Business Acquisition [Line Items]
Number of branches operated | branch	7
First Green Bancorp, Inc.
Business Acquisition [Line Items]
Percentage of common stock acquired	100.00%
Common stock portion, number of Seacoast stock for each share of stock converted (in shares)	0.7324
Goodwill recognized from acquisition, nondeductible | $	$ 56.7

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Business Combinations - Purchase Price (Details) - First Green Bancorp, Inc. $ / shares in Units, shares in Thousands, $ in Thousands	Oct. 19, 2018 USD ($) $ / shares shares
Business Acquisition [Line Items]
Shares exchanged for cash	$ 5,462
Per share exchange ratio (in shares)	0.7324
Number of shares of common stock issued (in shares) | shares	4,000
Multiplied by common stock price per share (in dollars per share) | $ / shares	$ 26.87
Value of common stock issued	$ 107,486
Cash paid for First Green vested stock options	6,558
Total purchase price	$ 114,044

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Business Combinations - Fair Value of the Assets Purchased, Including Goodwill and Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018	Oct. 19, 2018
Assets:
Goodwill	$ 205,260	$ 204,753
First Green Bancorp, Inc. | Measurement Period Adjustments
Assets:
Cash			$ 0
Investment securities			0
Loans, net			0
Fixed assets			0
Other real estate owned			0
Core deposit intangibles			(678)
Goodwill			506
Other assets			172
Total assets acquired			0
Liabilities:
Deposits			0
Other liabilities			0
Total liabilities assumed			0
First Green Bancorp, Inc. | Initially Measured October 19, 2018
Assets:
Cash			29,434
Investment securities			32,145
Loans, net			631,497
Fixed assets			16,828
Other real estate owned			410
Core deposit intangibles			10,170
Goodwill			56,198
Other assets			40,669
Total assets acquired			817,351
Liabilities:
Deposits			624,289
Other liabilities			79,018
Total liabilities assumed			703,307
First Green Bancorp, Inc. | As Adjusted October 19, 2018
Assets:
Cash			29,434
Investment securities			32,145
Loans, net			631,497
Fixed assets			16,828
Other real estate owned			410
Core deposit intangibles			9,492
Goodwill			56,704
Other assets			40,841
Total assets acquired			817,351
Liabilities:
Deposits			624,289
Other liabilities			79,018
Total liabilities assumed			$ 703,307

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Business Combinations - Fair Value of Acquired Loans (Details) - First Green Bancorp, Inc. $ in Thousands	Oct. 19, 2018 USD ($)
Business Acquisition [Line Items]
Book Balance	$ 668,216
Fair Value	631,497
Commercial real estate
Business Acquisition [Line Items]
Book Balance	437,767
Fair Value	406,613
Commercial loans
Business Acquisition [Line Items]
Book Balance	56,288
Fair Value	54,973
Single family residential real estate
Business Acquisition [Line Items]
Book Balance	101,674
Fair Value	101,119
Construction/development/land
Business Acquisition [Line Items]
Book Balance	61,195
Fair Value	58,385
Consumer and other loans
Business Acquisition [Line Items]
Book Balance	9,156
Fair Value	8,942
Purchased Credit Impaired
Business Acquisition [Line Items]
Book Balance	2,136
Fair Value	$ 1,465

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Business Combinations - Purchased Credit Impaired Loans (Details) - First Green Bancorp, Inc. $ in Thousands	Oct. 19, 2018 USD ($)
Business Acquisition [Line Items]
Total purchased credit-impaired loan acquired	$ 631,497
Purchased Credit Impaired Loans
Business Acquisition [Line Items]
Contractually required principal and interest	2,136
Non-accretable difference	(671)
Cash flows expected to be collected	1,465
Accretable yield	0
Total purchased credit-impaired loan acquired	$ 1,465

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Business Combinations - Pro-Forma Information (Details) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2018 USD ($) $ / shares
Business Combinations [Abstract]
Net interest income | $	$ 57,416
Net income | $	$ 22,065
EPS - basic (in dollars per share) | $ / shares	$ 0.43
EPS - diluted (in dollars per share) | $ / shares	$ 0.43

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Label	Element	Value
Accounting Standards Update 2016-01 [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	$ 0
Accounting Standards Update 2016-01 [Member] | Retained Earnings [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	(115,000)
Accounting Standards Update 2016-01 [Member] | AOCI Attributable to Parent [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	$ 115,000