Fair Value Disclosures (Tables)

12 Months Ended

Dec. 31, 2014

Fair Value Disclosures [Abstract]

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 December 31, 2014, segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value (in thousands):

	Level 1 Inputs		Level 2 Inputs		Level 3 Inputs		Total Fair Value
Available-for-sale investment securities:
U.S. Treasury securities	$	520	$	—	$	—	$	520
Obligations of U. S. government sponsored enterprises and agencies		—		129,755		—		129,755
Obligations of state and political subdivisions		59,455		1,108,173		—		1,167,628
Corporate bonds		—		94,065		—		94,065
Residential mortgage-backed securities		—		885,211		—		885,211
Commercial mortgage-backed securities		—		133,984		—		133,984
Other securities		4,693		—		—		4,693
Total	$	64,668	$	2,351,188	$	—	$	2,415,856

Other Real Estate Owned

The following table presents other real estate owned that were re-measured subsequent to their initial transfer to other real estate owned (dollars in thousands):

	Year Ended December 31,
	2014			2013
Carrying value of other real estate owned prior to remeasurement	$	881		$	2,405
Write-downs included in gain (loss) on sale of other real estate owned		(135	)		(445	)
Fair value	$	746		$	1,960

Schedule of Estimated Fair Values and Carrying Values of All Financial Instruments

The estimated fair values and carrying values of all financial instruments under current authoritative guidance at December 31, 2014 and 2013, were as follows (dollars in thousands):

	2014				2013
	Carrying Value		Estimated Fair Value		Carrying Value		Estimated Fair Value		Fair Value Hierarchy
Cash and due from banks	$	190,387	$	190,387	$	183,084	$	183,084	Level 1
Federal funds sold		8,760		8,760		3,430		3,430	Level 1
Interest-bearing deposits in banks		54,324		54,324		25,498		25,498	Level 1
Interest-bearing time deposits in banks		17,002		17,032		31,917		32,059	Level 2
Available-for-sale securities		2,415,856		2,415,856		2,057,723		2,057,723	Levels 1 and 2
Held-to-maturity securities		441		447		684		694	Level 2
Loans		2,901,167		2,906,399		2,655,548		2,667,743	Level 3
Accrued interest receivable		28,998		28,998		26,865		26,865	Level 2
Deposits with stated maturities		648,992		650,893		686,626		688,876	Level 2
Deposits with no stated maturities		4,101,263		4,101,263		3,448,449		3,448,449	Level 1
Short term borrowings		367,110		367,110		463,888		463,888	Level 2
Accrued interest payable		237		237		299		299	Level 2