CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Consolidated Balance Sheets
Allowance of Accounts receivable	$ 3,086	$ 1,812
Common stock par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized	75,000,000	75,000,000
Common stock, shares issued	38,744,118	38,524,922
Common stock, shares outstanding	38,744,118	38,524,922