CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Consolidated Balance Sheets
Allowance of Accounts receivable	$ 8,601	$ 6,412
Common stock par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized	300,000,000	300,000,000
Common stock, shares issued	154,406,164	150,281,099
Common stock, shares outstanding	154,406,164	150,281,099