CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (Parenthetical)	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Issuance of shares of common stock pursuant to various stock compensation plans and agreements, shares	390,195	245,261
Cancellation of common stock due to forfeitures of issued restricted stock, shares	12,959	44,793
Restricted stock surrendered due to employee tax liability, shares	202,070	356,426
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
Converted shares of common stock, shares		5,594,080