Stock-Based Compensation (Details 2) (USD $)	9 Months Ended
	Sep. 30, 2013
Options outstanding at January 1, 2013 - Number of Shares (in shares)	597,504
Granted - Number of Shares (in shares)	1,850
Exercised - Number of Shares (in shares)	0
Cancelled/Forfeited - Number of Shares (in shares)	(30,070)
Expired - Number of Shares (in shares)	(14,906)
Options outstanding at September 30, 2013 - Number of Shares (in shares)	554,378
Options exercisable at September 30, 2013 - Number of Shares (in shares)	484,582
Options outstanding - at January 1, 2013 Weighted Average Exercise Price (in dollars per share)	$ 13.03
Granted - Weighted Average Exercise Price (in dollars per share)	$ 7.15
Cancelled/Forfeited - Weighted Average Exercise Price (in dollars per share)	$ 14.61
Expired - Weighted Average Exercise Price (in dollars per share)	$ 15.98
Options outstanding at September 30, 2013 - Weighted Average Exercise Price (in dollars per share)	$ 12.84
Options exercisable at September 30, 2013 - Weighted Average Exercise Price (in dollars per share)	$ 12.89
Options outstanding at September 30, 2013 - Weighted Average Remaining Contractual Term (in years)	4 years 10 months 24 days
Options exercisable at September 30, 2013 - Weighted Average Remaining Contractual Term (in years)	4 years 6 months 11 days