Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2015

Impaired Loans Remeasured And Reported At Fair Value Specific Valuation Allowance Allocation Method Of Underlying Collateral [Table Text Block]

The following table presents impaired loans that were remeasured and reported at fair value through a specific valuation allowance allocation of the allowance for loan losses based upon the fair value of the underlying collateral during the reported periods.



	Six Months Ended June 30, 2015						Six Months Ended June 30, 2014
	Level 2			Level 3			Level 2		Level 3
Carrying value of impaired loans before allocations	$	163		$	2,039		$	197	$	352
Specific valuation allowance (allocations) reversals of prior allocations	(71		)	(437		)	75		(150		)
Fair value	$	92		$	1,602		$	272	$	202

Financial Assets and Financial Liabilities Measured at Fair Value on Recurring Basis

The following table summarizes financial assets and financial liabilities measured at fair value on a recurring basis as of June 30, 2015 and December 31, 2014, segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value:



	Level 1 Inputs		Level 2 Inputs		Level 3 Inputs		Total Fair Value
June 30, 2015
Securities available for sale:
U.S. Treasury	$	3,742,549	$	—	$	—	$	3,742,549
U.S. Government agencies/corporations	—		10,002		—		10,002
Residential mortgage-backed securities	—		1,220,907		—		1,220,907
States and political subdivisions	—		3,627,717		—		3,627,717
Other	—		42,411		—		42,411
Trading account securities:
U.S. Treasury	15,639		—		—		15,639
States and political subdivisions	—		957		—		957
Derivative assets:
Interest rate swaps, caps and floors	—		36,830		159		36,989
Commodity swaps and options	—		17,555		—		17,555
Foreign currency forward contracts	40		—		—		40
Derivative liabilities:
Interest rate swaps, caps and floors	—		39,222		—		39,222
Commodity swaps and options	—		17,466		—		17,466
Foreign currency forward contracts	29		—		—		29



	Level 1 Inputs		Level 2 Inputs		Level 3 Inputs		Total Fair Value
December 31, 2014
Securities available for sale:
U.S. Treasury	$	3,811,252	$	—	$	—	$	3,811,252
Residential mortgage-backed securities	—		1,398,724		—		1,398,724
States and political subdivisions	—		3,208,907		—		3,208,907
Other	—		42,371		—		42,371
Trading account securities:
U.S. Treasury	15,339		—		—		15,339
States and political subdivisions	—		87		—		87
Derivative assets:
Interest rate swaps, caps and floors	—		40,931		170		41,101
Commodity swaps and options	—		32,829		—		32,829
Foreign currency forward contracts	666		—		—		666
Derivative liabilities:
Interest rate swaps, caps and floors	—		43,853		—		43,853
Commodity swaps and options	—		32,729		—		32,729
Foreign currency forward contracts	617		—		—		617

Foreclosed Assets Remeasured and Reported at Fair Value

The following table presents foreclosed assets that were remeasured and reported at fair value during the reported periods:



	Six Months Ended June 30,
	2015			2014
Foreclosed assets remeasured at initial recognition:
Carrying value of foreclosed assets prior to remeasurement	$	161		$	1,854
Charge-offs recognized in the allowance for loan losses	—			(232		)
Fair value	$	161		$	1,622
Foreclosed assets remeasured subsequent to initial recognition:
Carrying value of foreclosed assets prior to remeasurement	$	205		$	4,299
Write-downs included in other non-interest expense	(36		)	(994		)
Fair value	$	169		$	3,305

Estimated Fair Values of Financial Instruments

The estimated fair values of financial instruments that are reported at amortized cost in our consolidated balance sheets, segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value, were as follows:



	June 30, 2015				December 31, 2014
	Carrying Amount		Estimated Fair Value		Carrying Amount		Estimated Fair Value
Financial assets:
Level 2 inputs:
Cash and cash equivalents	$	3,268,546	$	3,268,546	$	4,364,123	$	4,364,123
Securities held to maturity	2,795,676		2,813,990		2,926,486		2,966,390
Cash surrender value of life insurance policies	173,639		173,639		172,050		172,050
Accrued interest receivable	133,001		133,001		128,436		128,436
Level 3 inputs:
Loans, net	11,294,217		11,324,795		10,887,993		10,939,684
Financial liabilities:
Level 2 inputs:
Deposits	23,841,154		23,841,462		24,135,930		24,136,402
Federal funds purchased and repurchase agreements	592,364		592,364		803,119		803,119
Junior subordinated deferrable interest debentures	137,115		137,115		137,115		137,115
Subordinated notes payable and other borrowings	100,000		96,427		100,000		95,591
Accrued interest payable	1,081		1,081		1,132		1,132