Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2013

Fair Value Disclosures [Abstract]

Financial Asset and Liabilities Measured at Fair Value on Recurring Basis

The Company has segregated all financial assets and liabilities that are measured at fair value on a recurring basis into the most appropriate level within the fair value hierarchy based on the inputs used to estimate the fair value at the measurement date in the tables below.

(Dollars in thousands)			Fair Value Measurements Using
Recurring Basis Description	March 31,   2013		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets
Available -for-sale securities	$	1,951,548	$	35,008	$	1,916,540	$	—
Derivative instruments		41,208		—		41,208		—
Total	$	1,992,756	$	35,008	$	1,957,748	$	—
Liabilities
Derivative instruments		34,383		—		34,383		—
Total	$	34,383	$	—	$	34,383	$	—

(Dollars in thousands)			Fair Value Measurements Using
Recurring Basis Description	December 31, 2012		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets
Available -for-sale securities	$	1,745,004	$	—	$	1,745,004	$	—
Derivative instruments		42,119		—		42,119		—
Total	$	1,787,123	$	—	$	1,787,123	$	—
Liabilities
Derivative instruments		36,890		—		36,890		—
Total	$	36,890	$	—	$	36,890	$	—

Gains and Losses Included in Earnings Related to Asset and Liabilities Measured at Fair Value on Recurring Basis

Gains and losses (realized and unrealized) included in earnings (or changes in net assets) for the first three months of 2013 related to assets and liabilities measured at fair value on a recurring basis are reported in noninterest income or other comprehensive income as follows:

(Dollars in thousands)	Noninterest income			Other comprehensive income
Total gains (losses) included in earnings (or changes in net assets)	$	(3,012	)	$	—
Change in unrealized gains (losses) relating to assets still held at December 31, 2012		—			(468	)

Financial Asset and Liabilities Measured at Fair Value on Nonrecurring Basis

The Company has segregated all financial assets and liabilities that are measured at fair value on a nonrecurring basis into the most appropriate level within the fair value hierarchy based on the inputs used to determine the fair value at the measurement date in the tables below.

(Dollars in thousands)			Fair Value Measurements Using
Nonrecurring Basis Description	March 31,   2013		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets
Loans	$	6,295	$	—	$	6,295	$	—
Mortgage loans held for sale		46,966		—		46,966		—
OREO		23,710		—		23,710		—
Total	$	76,971	$	—	$	76,971	$	—

(Dollars in thousands)			Fair Value Measurements Using
Nonrecurring Basis Description	December 31, 2012		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets
Loans	$	6,388	$	—	$	6,388	$	—
Mortgage loans held for sale		32,753		—		32,753		—
OREO		20,427		—		20,427		—
Total	$	59,568	$	—	$	59,568	$	—