Fair Value of Assets and Liabilities (Tables)

12 Months Ended

Dec. 31, 2012

Fair value measurement of assets and liabilities measured at fair value on a recurring basis



			Fair Value Measurements At the End of the Reporting Period Using
(Dollars in thousands)	Fair Value December 31, 2012		Quoted Prices in Active Markets for Identical Assets (Level 1)	Significant Other Observable Inputs (Level 2)	Significant Unobservable Inputs (Level 3)
Investment securities, available-for-sale
U.S. government and federal agency	$	202	—	202	—
U.S. government sponsored enterprises	17,480		—	17,480	—
State and local governments	1,214,518		—	1,214,518	—
Corporate bonds	288,795		—	288,795	—
Collateralized debt obligations	1,708		—	1,708	—
Residential mortgage-backed securities	2,160,302		—	2,160,302	—
Total assets measured at fair value on a recurring basis	$	3,683,005	—	3,683,005	—
Interest rate swaps	$	16,832	—	16,832	—
Total liabilities measured at fair value on a recurring basis	$	16,832	—	16,832	—



			Fair Value Measurements At the End of the Reporting Period Using
(Dollars in thousands)	Fair Value December 31, 2011		Quoted Prices in Active Markets for Identical Assets (Level 1)	Significant Other Observable Inputs (Level 2)	Significant Unobservable Inputs (Level 3)
Investment securities, available-for-sale
U.S. government and federal agency	$	208	—	208	—
U.S. government sponsored enterprises	31,155		—	31,155	—
State and local governments	1,064,655		—	1,064,655	—
Corporate bonds	62,237		—	62,237	—
Collateralized debt obligations	5,366		—	5,366	—
Residential mortgage-backed securities	1,963,122		—	1,963,122	—
Total assets measured at fair value on a recurring basis	$	3,126,743	—	3,126,743	—
Interest rate swaps	$	8,906	—	8,906	—
Total liabilities measured at fair value on a recurring basis	$	8,906	—	8,906	—

Reconciliation of opening and closing balances for assets measured at fair value on a recurring basis using significant unobservable inputs



	Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
				Investment Securities
(Dollars in thousands)	Total			Collateralized Debt Obligations		Residential Mortgage-backed Securities
Balance at December 31, 2010	$	6,751		6,595		156
Total unrealized gains (losses) for the period included in other comprehensive income	4,167			4,301		(134	)
Amortization, accretion and principal payments	(5,530		)	(5,530	)	—
Transfers out of Level 3	(5,388		)	(5,366	)	(22	)
Balance at December 31, 2011	$	—		—		—

Fair value measurement of assets measured at fair value on a non-recurring basis



			Fair Value Measurements At the End of the Reporting Period Using
(Dollars in thousands)	Fair Value December 31, 2012		Quoted Prices in Active Markets for Identical Assets (Level 1)	Significant Other Observable Inputs (Level 2)	Significant Unobservable Inputs (Level 3)
Other real estate owned	$	13,983	—	—	13,983
Collateral-dependent impaired loans, net of ALLL	22,966		—	—	22,966
Total assets measured at fair value on a non-recurring basis	$	36,949	—	—	36,949



			Fair Value Measurements At the End of the Reporting Period Using
(Dollars in thousands)	Fair Value December 31, 2011		Quoted Prices in Active Markets for Identical Assets (Level 1)	Significant Other Observable Inputs (Level 2)	Significant Unobservable Inputs (Level 3)
Other real estate owned	$	38,076	—	—	38,076
Collateral-dependent impaired loans, net of ALLL	55,339		—	—	55,339
Goodwill	24,718		—	—	24,718
Total assets measured at fair value on a non-recurring basis	$	118,133	—	—	118,133

Quantitative information about assets measured at fair value on a non-recurring basis for which Level 3 inputs were used



			Quantitative Information about Level 3 Fair Value Measurements
(Dollars in thousands)	Fair Value December 31, 2012		Valuation Technique	Unobservable Input	Range (Weighted Average) ¹
Other real estate owned	$	93	Cost approach	Selling costs	7.0% - 7.0% (7.0%)
	11,787		Sales comparison approach	Selling costs	7.0% - 14.0% (7.9%)
				Adjustment to comparables	0.0% - 37.0% (11.7%)
	2,103		Combined approach	Selling costs	5.0% - 8.0% (6.6%)
				Discount rate	25.0% - 25.0% (25.0%)
				Adjustment to comparables	0.0% - 30.0% (7.7%)
	$	13,983
Collateral-dependent impaired loans, net of ALLL	$	84	Cost approach	Selling costs	8.0% - 8.0% (8.0%)
	5,509		Income approach	Selling costs	8.0% - 10.0% (8.2%)
				Discount rate	0.0% - 8.3% (6.3%)
	12,878		Sales comparison approach	Selling costs	0.0% - 16.0% (8.6%)
				Adjustment to comparables	0.0% - 12.0% (1.6%)
	4,495		Combined approach	Selling costs	8.0% - 10.0% (8.4%)
				Discount rate	8.0% - 8.0% (8.0%)
				Adjustment to comparables	0.0% - 36.0% (17.6%)
	$	22,966

Carrying amounts, estimated fair values and the level within the fair value hierarchy of financial assets and financial liabilities



			Fair Value Measurements At the End of the Reporting Period Using
(Dollars in thousands)	Carrying Amount December 31, 2012		Quoted Prices in Active Markets for Identical Assets (Level 1)	Significant Other Observable Inputs (Level 2)	Significant Unobservable Inputs (Level 3)
Financial assets
Cash and cash equivalents	$	187,040	187,040	—	—
Investment securities, available-for-sale	3,683,005		—	3,683,005	—
Loans held for sale	145,501		145,501	—	—
Loans receivable, net of ALLL	3,266,571		—	3,184,987	186,201
Accrued interest receivable	37,770		37,770	—	—
Non-marketable equity securities	48,812		—	48,812	—
Total financial assets	$	7,368,699	370,311	6,916,804	186,201
Financial liabilities
Deposits	$	5,364,461	3,585,126	1,789,134	—
FHLB advances	997,013		—	1,027,101	—
Repurchase agreements and other borrowed funds	299,540		—	299,540	—
Subordinated debentures	125,418		—	70,895	—
Accrued interest payable	4,675		4,675	—	—
Interest rate swaps	16,832		—	16,832	—
Total financial liabilities	$	6,807,939	3,589,801	3,203,502	—

Note 20. Fair Value of Assets and Liabilities (continued)



			Fair Value Measurements At the End of the Reporting Period Using
(Dollars in thousands)	Carrying Amount December 31, 2011		Quoted Prices in Active Markets for Identical Assets (Level 1)	Significant Other Observable Inputs (Level 2)	Significant Unobservable Inputs (Level 3)
Financial assets
Cash and cash equivalents	$	128,032	128,032	—	—
Investment securities, available-for-sale	3,126,743		—	3,126,743	—
Loans held for sale	95,457		95,457	—	—
Loans receivable, net of ALLL	3,328,619		—	3,146,502	239,831
Accrued interest receivable	34,961		34,961	—	—
Non-marketable equity securities	49,694		—	49,694	—
Total financial assets	$	6,763,506	258,450	6,322,939	239,831
Financial liabilities
Deposits	$	4,821,213	3,132,261	1,698,382	—
FHLB advances	1,069,046		—	1,099,699	—
Repurchase agreements and other borrowed funds	268,638		—	268,642	—
Subordinated debentures	125,275		—	65,903	—
Accrued interest payable	5,825		5,825	—	—
Interest rate swaps	8,906		—	8,906	—
Total financial liabilities	$	6,298,903	3,138,086	3,141,532	—

- Definition

Tabular disclosure of assets and liabilities by class, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a nonrecurring basis in periods after initial recognition (for example, impaired assets). The disclosures that may be required or desired include: (a) the fair value measurements recorded during the period and the reasons for the measurements and (b) the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets or liabilities (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). Where the quoted price in an active market for the identical liability is not available, the Level 1 input is the quoted price of an identical liability when traded as an asset.

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- Definition

Tabular disclosure of the fair value measurement of assets using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes during the period attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets) and gains or losses recognized in other comprehensive income, and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issuances, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs), by class of asset.

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- Definition

Tabular disclosure of the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments, assets, and liabilities. Such certain disclosures about the financial instruments, assets, and liabilities include: (1) the fair value of the required items together with their carrying amounts (as appropriate) and (2) the methodology and assumptions used in developing such estimates of fair value.

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