Stock-Based Compensation Unrecognized Compensation related to non-vested awards (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2013
Stock Options [Member]
Unrecognized compensation cost related to non-vested awards	$ 867	$ 867
Weighted-average recognition period (in years)		2 years 4 months 24 days
Restricted Stock [Member]
Unrecognized compensation cost related to non-vested awards	$ 1,184	$ 1,184
Weighted-average recognition period (in years)		3 years 8 months 12 days
Share-based Compensation awards, performanced-based [Member]
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Number of Shares	183,424	183,424
Share-based Compensation awards, restricted share awards,performance-based [Member]
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Number of Shares	61,141	61,141