Derivatives (Tables)

9 Months Ended

Sep. 30, 2012

Derivative [Line Items]

Schedule Of Accumulated Other Comprehensive Income (Loss)

Accumulated other comprehensive loss included the following as of September 30, 2012, December 31, 2011, and September 30, 2011:

	September 30, 2012									December 31, 2011									September 30, 2011
	Accumulated other comprehensive income (loss)			Deferred tax expense (benefit)			Accumulated other comprehensive income (loss), net of tax			Accumulated other comprehensive income (loss)			Deferred tax expense (benefit)			Accumulated other comprehensive income (loss), net of tax			Accumulated other comprehensive income (loss)			Deferred tax expense (benefit)			Accumulated other comprehensive income (loss), net of tax
Unrealized gains on investment securities available for sale	$	42,907		$	17,019		$	25,888		$	26,565		$	10,450		$	16,115		$	28,830		$	11,340		$	17,490
Funded status of defined benefit plan	(116,887		)	(45,773		)	(71,114		)	(125,255		)	(49,049		)	(76,206		)	(68,752		)	(26,923		)	(41,829		)
Unrealized loss on cash flow hedge	(11,170		)	(4,410		)	(6,760		)	(10,714		)	(4,231		)	(6,483		)	(13,531		)	(5,343		)	(8,188		)
Total	$	(85,150	)	$	(33,164	)	$	(51,986	)	$	(109,404	)	$	(42,830	)	$	(66,574	)	$	(53,453	)	$	(20,926	)	$	(32,527	)

Interest Rate Swap

Derivative [Line Items]

Schedule Of Interest Rate Swaps

	September 30, 2012			December 31, 2011			September 30, 2011
	Notional  amount	Estimated fair value of liability		Notional  amount	Estimated fair value of liability		Notional  amount	Estimated fair value of liability
2009 interest rate swap hedging variable rate exposure on trust preferred securities 2011	—	—		—	—		115,000	13,531
2011 interest rate swap hedging variable rate exposure on trust preferred securities 2011-2016	93,500	11,170		93,500	10,714		—	—
		$	11,170		$	10,714		$	13,531

Schedule Of Accumulated Other Comprehensive Income (Loss)

The following table discloses activity in accumulated other comprehensive income (loss) related to the interest rate swaps during the nine-month periods ended September 30, 2012 and 2011.

	2012			2011
Accumulated other comprehensive loss resulting from interest rate swaps as of January 1	$	(10,714	)	$	(9,492	)
Other comprehensive income (loss) recognized during nine month period ended September 30	(456		)	(4,039		)
Accumulated other comprehensive loss resulting from interest rate swaps as of September 30	$	(11,170	)	$	(13,531	)