Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Consolidated Balance Sheets
Allowance for doubtful accounts	$ 989	$ 39
Common stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Common stock shares authorized	380,000,000	380,000,000
Common stock shares issued	105,254,929	74,786,327
Common stock, Number of share outstanding	100,840,162	74,786,327
Treasury stock, shares	4,414,767	0