Earnings (Loss) Per Share - Basic and Diluted (Details) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Basic:
Weighted average shares outstanding (shares)	27,243,128	27,468,240	27,397,342	27,430,162
Effect of dilutive securities:
Common stock options (shares)	0	334,494	0	379,046
Total weighted average shares outstanding assuming dilution (shares)	27,243,128	27,802,734	27,397,342	27,809,208
Shares of common stock issued from the exercise of stock options (shares)	0	75,783	3,970	130,705
Stock options
Effect of dilutive securities:
Anti-dilutive stock options (shares)	1,077,816	771,544	959,631	787,184