OTHER COMPREHENSIVE LOSS (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
COMPREHENSIVE INCOME
Change in fair value of securities available for sale, pre tax amount	$ (1,682)		$ 277		$ 3,363
Change in fair value of securities available for sale, tax (expense) benefit	541		(96)		(1,356)
Change in fair value of securities available for sale, after tax amount	(1,141)		181		2,007
Less: net security losses reclassified into earnings, pre tax amount	76	[1]	(480)	[1]	(124)	[1]
Less: net security losses reclassified into earnings, pre tax amount, tax (expense) benefit	(31)		568		29
Less: net security losses reclassified into earnings, pre tax amount, after tax amount	45		88		(95)
Net change in fair value of securities available for sale, pre tax amount	(1,606)		(203)		3,239
Net change in fair value of securities available for sale, tax (expense) benefit	510		472		(1,327)
Net change in fair value of securities available for sale, after tax amount	(1,096)		269		1,912
Change in fair value of cash flow hedges, pre tax amount	(3,588)	[2]	(11,869)	[2]	(13,346)	[2]
Change in fair value of cash flow hedges, tax (expense) benefit	1,466		4,848		5,452
Change in fair value of cash flow hedges, after tax amount	(2,122)		(7,021)		(7,894)
Less: net cash flow hedge losses reclassified into earnings, pre tax amount	5,417		5,472		3,983
Less: net cash flow hedge losses reclassified into earnings, tax (expense) benefit	(2,213)		(2,274)		(1,638)
Less: net cash flow hedge losses reclassified into earnings, after tax amount	3,204		3,198		2,345
Net change in fair value of cash flow hedges, pre tax amount	1,829		(6,397)		(9,363)
Net change in fair value of cash flow hedges, tax (expense) benefit	(747)		2,574		3,814
Net change in fair value of cash flow hedges	1,082		(3,823)		(5,549)
Amortization of certain costs included in net periodic retirement costs, pre tax amount	(44)		(366)		199
Amortization of certain costs included in net periodic retirement costs, tax (expense) benefit	18		200		(81)
Amortization of certain costs included in net periodic retirement costs, after tax amount	(26)		(166)		118
Total other comprehensive loss, pre tax amount	179		(6,966)		(5,925)
Total other comprehensive income, tax (expense) benefit	(219)		3,246		2,406
Total other comprehensive loss	$ (40)		$ (3,720)		$ (3,519)

[1] Net security losses include pre-tax OTTI credit related losses of $76,000, $243,000, and $334,000 for the years ended December 31, 2012, 2011, and 2010, respectively.

[2] ncludes the remaining balance of a realized but unrecognized gain, net of tax, from the termination of interest rate swaps in June 2009. The original gain of $1.3 million, net of tax, will be recognized in earnings through December 2018, the original maturity date of the swap. The balance of this gain had amortized to $859.0 thousand, $1.0 million, and $1.1 million at December 31, 2012, 2011, and 2010, respectively.