CONSOLDATED STATEMENTS OF STOCKHOLDERS' DEFICIT - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Treasury Stock [Member]
Balances at beginning of period at Dec. 31, 2021	$ (124,074)
Stock issued pursuant to employee stock plans, net of shares withheld for employee tax obligations	(8,936)
Stock-based compensation	3,422
Net loss	10,586
Other comprehensive income (loss)	(201)
Balances at end of period (in shares) at Mar. 31, 2022		46,219,000				(1,228,000)
Balances at end of period at Mar. 31, 2022	$ (130,019)	$ 459	$ 1,026,115	$ (1,116,373)	$ (4,314)
Balances at beginning of period (in shares) at Dec. 31, 2022	43,771,000
Balances at beginning of period at Dec. 31, 2022						$ (77,933)
Stock issued pursuant to employee stock plans (in shares)		391,000
Stock issued pursuant to employee stock plans, net of shares withheld for employee tax obligations		$ 4	(8,940)
Repurchase of common stock (in shares)	(15,706)					(354,000)
Repurchase of common stock	$ (400)					$ (420)
Stock-based compensation			3,422
Net loss	$ (381)			10,586
Other comprehensive income (loss)					(201)
Balances at end of period (in shares) at Mar. 31, 2023	43,837,000	46,763,000				(2,926,000)
Balances at end of period at Mar. 31, 2023	$ (118,736)	$ 464	$ 1,036,538	$ (1,072,099)	$ (5,286)	$ (78,353)