CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (Parenthetical) - shares	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY
Issuance of shares of common stock pursuant to various stock compensation plans and agreements, shares	409,885	390,195
Cancellation of common stock due to forfeitures of issued restricted stock, shares		12,959
Restricted stock surrendered due to employee tax liability, shares	143,078	202,070
Issuance of shares pursuant to MetroCorp Bancshares, Inc. acquisition, shares		5,583,093