CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (Parenthetical)	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Issuance of shares of common stock pursuant to various stock compensation plans and agreements, shares	398,012	285,921
Issuance of shares pursuant to Director retainer fee, shares	18,909	19,998
Cancellation of common stock due to forfeitures of issued restricted stock, shares	17,337	58,929
Restricted stock surrendered due to employee tax liability, shares	208,440	368,932
Converted shares of common stock, shares		5,594,080
Purchase of treasury stock pursuant to the Stock Repurchase Program, shares		8,026,807
Issuance of shares pursuant to MetroCorp acquisition, shares	5,583,093
Preferred stock, Series A, non-cumulative convertible
Conversion of Series A preferred stock, shares		85,710