CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Exercise of stock options, shares	349,923
COMMON STOCK (Par Value: $0.01):
Exercise of stock options, shares	168,001	308,173	38,093
Shares issued for restricted stock awards, shares	1,611,819	374,858	1,184,166
Shares issued in stock offerings, shares			69,000,000
Shares issued for debt exchange, shares			4,756,444
Shares issued in connection with the direct stock purchase feature of the Dividend Reinvestment and Stock Purchase Plan (DRP), shares		1,766,482	13,233,518
RETAINED EARNINGS:
Dividends paid on common stock, per share	1.00	1.00	1.00
TREASURY STOCK:
Purchase of common stock, shares	229,712	248,385	114,302
Exercise of stock options, shares	135,162	176,043	6,867
Shares issued for restricted stock awards, shares	12,681	72,342	107,435
ACCUMULATED OTHER COMPREHENSIVE LOSS, NET OF TAX:
Change in net unrealized gain (loss) on securities available for sale, tax	366	17,134	16,648
Adjustment for the cumulative effect of a change in accounting for OTTI, tax			377
Change in the non-credit portion of OTTI losses recognized in other comprehensive loss (income), tax	4,857	9,656	3,886
Amortization of net unrealized loss on securities transferred from available for sale to held to maturity, tax		2,557	513
Change in pension and post-retirement obligations, tax	14,993	1,334	6,981
Reclassification adjustment for sales of securities and loss on OTTI of securities, tax	7,439	8,186	37,885