Condensed Consolidated Balance Sheets (Parenthetical) (unaudited) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Statement Of Financial Position [Abstract]
Accounts receivable, chargebacks and other deductions (in dollars)	$ 17,264	$ 12,552
Provision for credit losses (in dollars)	$ 9,482	$ 9,637
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized	250,000,000	250,000,000
Common stock, shares issued	95,185,620	95,066,195
Common Stock, shares outstanding	93,512,700	93,393,275
Treasury stock, shares	1,672,920	1,672,920