Shares Outstanding (Details)			6 Months Ended
	Jun. 30, 2013	Dec. 31, 2012	Jun. 30, 2013 Common Shares	Jun. 30, 2013 Treasury Shares
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common Shares, balance at December 31, 2012	14,296,989	14,109,255	14,109,255
Treasury Shares, balance at December 31, 2012	1,915,593	1,872,265		1,872,265
Common stock award			14,000
Exercise of stock options			37,834
Common stock award			139,900
Restricted stock canceled			(4,000)
Purchase of treasury stock				43,328
Common Shares, balance at June 30, 2013	14,296,989	14,109,255	14,296,989
Treasury Shares, balance at June 30, 2013	1,915,593	1,872,265		1,915,593