CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Current assets:
Accounts receivable, reserves	$ 3,464	$ 2,445
Stockholders’ equity:
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	220,000,000	220,000,000
Common stock, shares issued (in shares)	130,365,000	128,375,000