Derivatives (Tables)

3 Months Ended

Mar. 31, 2012

Derivative [Line Items]

Schedule Of Accumulated Other Comprehensive Income (Loss)

Accumulated other comprehensive income (loss) included the following as of March 31, 2012, December 31, 2011 and March 31, 2011:

	March 31, 2012									December 31, 2011									March 31, 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	$	23,667		$	9,327		$	14,340		$	26,565		$	10,450		$	16,115		$	13,856		$	5,223		$	8,633
Funded status of defined benefit plan	(122,465		)	(47,957		)	(74,508		)	(125,255		)	(49,049		)	(76,206		)	(72,694		)	(28,859		)	(43,835		)
Unrealized loss on cash flow hedge	(10,325		)	(4,077		)	(6,248		)	(10,714		)	(4,231		)	(6,483		)	(7,775		)	(3,070		)	(4,705		)
Total	$	(109,123	)	$	(42,707	)	$	(66,416	)	$	(109,404	)	$	(42,830	)	$	(66,574	)	$	(66,613	)	$	(26,706	)	$	(39,907	)

Interest Rate Swap [Member]

Derivative [Line Items]

Schedule Of Interest Rate Swaps

	March 31, 2012				December 31, 2011				March 31, 2011
	Notional  amount		Estimated fair value of liability		Notional  amount		Estimated fair value of liability		Notional  amount		Estimated fair value of liability
2006 interest rate swap hedging variable rate exposure on trust preferred securities 2006-2011	$	—	$	—	$	—	$	—	$	115,000	$	1,450
2009 interest rate swap hedging variable rate exposure on trust preferred securities 2011	—		—		—		—		115,000		6,325
2011 interest rate swap hedging variable rate exposure on trust preferred securities 2011-2016	93,500		10,325		93,500		10,714		—		—
			$	10,325			$	10,714			$	7,775

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 three month periods ended March 31, 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 three month period ended March 31	389			1,717
Accumulated other comprehensive loss resulting from interest rate swaps as of March 31	$	(10,325	)	$	(7,775	)