Shareholders' Equity (Detail Textuals) (Share Repurchase Program, USD $)	9 Months Ended			1 Months Ended
	Sep. 30, 2013	Oct. 31, 2008	Jan. 31, 2006	Oct. 31, 2013 Subsequent Event
Equity, Class of Treasury Stock [Line Items]
Number of shares authorized to be purchased (in shares)		200,000	250,000
Number of shares purchased under purchase program (in shares)	296,131
Remaining number of shares authorized to be purchased (in shares)	153,869
Shares purchased during period (in shares)	44,306			14,785
Value of stock repurchased (in dollars)				$ 130,000