Condensed Consolidated Balance Sheets (unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2016	Dec. 31, 2015
Statement of Financial Position [Abstract]
Less: Debt issuance costs (net of accumulated amortization of $2,515 and $2,296, respectively	$ 3,817	$ 4,105
Common stock, par or stated value per share (in usd per share)	$ 0.0001	$ 0.0001
Common stock, shares authorized (in shares)	300,000,000	300,000,000
Common stock, shares, outstanding (in shares)	43,723,893	43,837,714
Treasury stock, shares outstanding (in shares)	3,826,166	3,178,372