Condensed Consolidated Balance Sheets Parenthetical - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Allowance for Doubtful Accounts Receivable, Current	$ 8,739	$ 1,052
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, shares authorized (in shares)	1,000	1,000
Preferred Stock, Shares Issued	0	0
Preferred Stock, Value, Issued	$ 0	$ 0
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	70,000,000	70,000,000
Common stock, shares issued (in shares)	39,756,000	40,613,000
Common stock, shares outstanding (in shares)	39,756,000	40,613,000