Condensed Consolidated Balance Sheets Parenthetical - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	150,000,000	150,000,000
Common stock, shares issued	30,749,836	30,613,166
Common stock, shares outstanding	30,749,836	30,613,166
Allowance for Doubtful Accounts Receivable, Current	$ 9,667	$ 10,217