CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (Parenthetical)	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Issuance of shares pursuant to various stock compensation plans and agreements, shares	205,103	158,878
Cancellation of common stock due to forfeitures of issued restricted stock, shares	47,489	42,524
Purchase of treasury stock due to the vesting of restricted stock, shares	60,073	23,676
Repurchase of common stock warrants, shares		1,517,555
Purchase of treasury stock pursuant to the Stock Repurchase Program, shares	4,554,827
Preferred stock, Series A, non-cumulative convertible
Conversion of Series preferred stock (in shares)		31
Converted shares of common stock (in shares)		2,014