Net Income (Loss) Per Common Share (Details) - shares	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Earnings Per Share [Line Items]
Weighted average common shares outstanding basic	30,616,485	32,232,965	33,588,720
Dilutive effect of stock options and restricted stock (in shares)	327,208	471,047	454,705
Weighted average common shares outstanding diluted (in shares)	30,943,693	32,704,012	34,043,425
Stock Option
Earnings Per Share [Line Items]
Options to purchase common stock outstanding (in shares)	463,200	198,500	123,900