Consolidated Statements of Stockholders’ Equity (Parentheticals) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Exercise of stock options, shares		30,000	108,000
Common Stock [Member]
Stock issued as bonus shares, shares	51,245	47,995	83,245
Stock issued for employee stock purchase plan, shares	5,103	4,805	4,947
Exercise of stock options, shares		30,319	108,604
Securities exchanged under stock option plan, shares		(5,252)
Repurchase of common stock – Shares	(725,887)	(137,144)
Accumulated Other Comprehensive Income (Loss) [Member]
Change in unrealized appreciation on available-for-sale securities, income tax portion (in Dollars)	(117)	(47)	(161)
Retained Earnings [Member]
Dividends paid per share (in Dollars per share)	0.80	0.76	0.76