Net Income (Loss) Per Common Share (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013 item
Net Income (Loss) Per Common Share
Weighted average common basic shares outstanding	21,997,394	21,911,574	21,989,131	21,890,861
Effect of dilutive stock options and restricted stock units	429,393	374,149	403,441	335,169
Weighted average common diluted shares outstanding	22,426,787	22,285,723	22,392,572	22,226,030
Net income (loss) per share:
Basic (in dollars per share)	$ 0.20	$ 0.17	$ 0.63	$ 0.32
Diluted (in dollars per share)	$ 0.19	$ 0.17	$ 0.62	$ 0.31
Anti-dilutive securities excluded from computation of diluted earnings per share amount (in shares)			0
Performance-based incentive programs				0