CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Mar. 31, 2017	Dec. 31, 2016
Statement of Financial Position [Abstract]
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	50,000,000	50,000,000
Common stock, shares issued (in shares)	18,178,495	18,170,267
Common stock, shares outstanding (in shares)	16,692,019	16,680,791
Treasury stock, shares (in shares)	1,486,476	1,489,476