CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (Parenthetical)	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Issuance of shares of common stock pursuant to various stock compensation plans and agreements, shares	285,921	299,964
Issuance of shares pursuant to Director retainer fee, shares	19,998	26,151
Cancellation of common stock due to forfeitures of issued restricted stock, shares	58,929	154,508
Restricted stock surrendered due to employee tax liability, shares	368,932	130,577
Purchase of treasury stock pursuant to the Stock Repurchase Program, shares	8,026,807	9,068,105
Preferred stock, Series A, non-cumulative convertible
Conversion of Series preferred stock, shares	85,710
Converted shares of common stock, shares	5,594,080