CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Statement of Financial Position [Abstract]
Allowance for doubtful accounts receivable, current	$ 1,286	$ 1,300
Deferred tax assets valuation allowance, noncurrent	$ 45,777	$ 114,190
Preferred stock, par value (usd per share)	$ 0.0001	$ 0.0001
Preferred stock, shares authorized (shares)	25,000,000	25,000,000
Preferred stock, shares issued (shares)	0	0
Preferred stock, shares outstanding (shares)	0	0
Common stock, par value (shares)	$ 0.0001	$ 0.0001
Common stock, shares authorized (shares)	75,000,000	75,000,000
Common stock, shares issued (shares)	20,886,261	21,419,073
Common stock, shares outstanding (shares)	20,886,261	21,978,762