Consolidated Statements of Changes in Stockholders’ Equity (Unaudited) (Parentheticals) (USD $) In Thousands, except Share data, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Cash dividends declared and paid on common shares, per common share (in Dollars per share)	$ 0.45	$ 0.39
Outstanding Common Shares Repurchased [Member] | Treasury Stock [Member]
	661,470	836,092
Shares Repurchased To Fund Options Exercised [Member] | Treasury Stock [Member]
	63,732	233,933
Additional Paid-in Capital [Member]
Award of common shares released from Employee Benefit Trust, common shares	133,446	141,059
Shares issued upon vesting of restricted stock	7,300	120,014
	105,925	235,025
Treasury Stock [Member]
Shares issued upon vesting of restricted stock	198,536	176,656
	105,925	300,195
	55,649	57,411
Retained Earnings [Member]
Shares issued upon vesting of restricted stock	191,236	56,642
	8,000	65,170
Cash dividends declared and paid on common shares, per common share (in Dollars per share)	$ 0.45	$ 0.39
Accumulated Other Comprehensive Income (Loss) [Member]
Change in net unrealized gains (losses) on securities available for sale, taxes (in Dollars)	$ (7,484)	$ 15,482
Amortization of actuarial losses, taxes (in Dollars)	(266)	(405)
Amortization of prior service credits, taxes (in Dollars)	18	15
OTTI charges included in income, net of taxes (in Dollars)		(620)
Reclassification adjustment for gains included in net income, tax (in Dollars)	$ 2,238	$ 1,299