CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Common Stock [Member]
Stock purchased under stock repurchase plan, shares	1,731,025	500,000
Issuance of common stock under Dividend Reinvestment Plan, shares	37,489	37,182
Issuance of common stock under Equity Compensation Plans, shares	67,057	16,845
Vesting of restricted stock under Equity Compensation Plans, shares	14,707	12,120
Issuance of Common Stock in regard to acquisition, shares	22,147,874
Issuance of common stock for services rendered, shares	14,374
Net settle for taxes on Restricted Stock Awards, shares	63,916	2,563
Retained Earnings [Member]
Dividends on common stock, per share	$ 0.43	$ 0.40
Accumulated Other Comprehensive Income (Loss) [Member]
Other comprehensive income (loss), tax	$ 7,625	$ 6,597