Basic and Diluted Income (Loss) Per Common Share (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Numerator:
Net income (loss)	$ (995)	$ 816	$ (10,349)	$ 1,504
Denominator:
Weighted-average shares outstanding for basic earnings per share (in shares)	18,058,319	18,390,034	18,232,873	18,370,907
Effect of dilutive securities:
Employee stock options (in shares)	0	69,900	0	112,235
Adjusted weighted-average shares outstanding and assumed conversions for diluted earnings per share (in shares)	18,058,319	18,459,934	18,232,873	18,483,142
Shares related to dilutive securities excluded because inclusion would be anti-dilutive (in shares)	2,899,349	2,847,203	2,909,597	2,799,268