Shareholders' Equity (Details) (USD $) In Millions, except Share data, unless otherwise specified	0 Months Ended	12 Months Ended
	Aug. 09, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Shareholders' Equity
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01	$ 0.01
Common shares of stock authorized		20,000,000	20,000,000
Aggregate offering price authorized Under the agreement	$ 25.0
Threshold aggregate offering price for termination of agreement	25.0
Period of notice to be served for termination of the agreement	10 days
Common stock sold under the Agreement		610,389
Common stock sold held in treasury		610,389
Proceeds from sale of common stock		$ 8.9
Common stock, issued		12,472,992	12,472,992
Common shares of stock outstanding		12,397,867	11,732,714	11,659,012
Number of shares of common stock in treasury
Balance at beginning of period (in shares)		740,278	813,980	865,703
Shares issued under stock offering program (in shares)		(610,389)
Shares distributed/exercised (in shares)		(79,530)	(113,439)	(72,171)
Shares purchased (in shares)		24,766	39,737	15,448
Shares forfeited (in shares)				5,000
Balance at end of period (in shares)		75,125	740,278	813,980