Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Statement of Financial Position [Abstract]
Accounts receivable, amounts owed by related parties	$ 0	$ 36
Accounts payable, amounts owed to related parties	0	1,101
Less: Debt issuance costs (net of accumulated amortization of $ 2,296 and $1,474, respectively)	$ 4,105	$ 5,152
Common stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Common stock, shares authorized (in shares)	300,000,000	300,000,000
Common stock, shares, outstanding (in shares)	43,837,714	44,422,881
Treasury stock, shares outstanding (in shares)	3,178,372	585,150