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, Common
Balances at beginning of period (in shares) at Dec. 31, 2021		45,828,000				(874,000)
Balances at beginning of period at Dec. 31, 2021	$ (124,074)	$ 455	$ 1,031,633	$ (1,126,959)	$ (4,113)	$ (25,090)
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	(8,936)	$ 4	(8,940)
Stock Repurchased During Period, Shares						(354,000)
Repurchase of common stock	10,816					$ (10,816)
Stock-based compensation	3,422		3,422
Net loss	10,586			10,586
Other comprehensive income (loss)	(201)				(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)	$ (35,906)
Balances at beginning of period (in shares) at Dec. 31, 2021		45,828,000				(874,000)
Balances at beginning of period at Dec. 31, 2021	(124,074)	$ 455	1,031,633	(1,126,959)	(4,113)	$ (25,090)
Net loss	17,959
Balances at end of period (in shares) at Jun. 30, 2022		46,408,000				(1,788,000)
Balances at end of period at Jun. 30, 2022	(136,360)	$ 461	1,028,277	(1,109,000)	(6,049)	$ (50,049)
Balances at beginning of period (in shares) at Mar. 31, 2022		46,219,000				(1,228,000)
Balances at beginning of period at Mar. 31, 2022	(130,019)	$ 459	1,026,115	(1,116,373)	(4,314)	$ (35,906)
Stock issued pursuant to employee stock plans (in shares)		189,000
Stock issued pursuant to employee stock plans, net of shares withheld for employee tax obligations	(1,481)	$ 2	(1,483)
Stock Repurchased During Period, Shares						(560,000)
Repurchase of common stock	14,143					$ (14,143)
Stock-based compensation	3,645		3,645
Net loss	7,373			7,373
Other comprehensive income (loss)	(1,735)				(1,735)
Balances at end of period (in shares) at Jun. 30, 2022		46,408,000				(1,788,000)
Balances at end of period at Jun. 30, 2022	$ (136,360)	$ 461	1,028,277	(1,109,000)	(6,049)	$ (50,049)
Balances at beginning of period (in shares) at Dec. 31, 2022	43,771,000	46,551,000				(2,911,000)
Balances at beginning of period at Dec. 31, 2022	$ (118,782)	$ 462	1,036,287	(1,071,718)	(5,880)	$ (77,933)
Stock issued pursuant to employee stock plans (in shares)		212,000
Stock issued pursuant to employee stock plans, net of shares withheld for employee tax obligations	(4,840)	$ 2	(4,842)
Stock Repurchased During Period, Shares						(15,000)
Repurchase of common stock	420					$ (420)
Stock-based compensation	5,093		5,093
Net loss	(381)			(381)
Other comprehensive income (loss)	594				594
Balances at end of period (in shares) at Mar. 31, 2023		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)
Balances at beginning of period (in shares) at Dec. 31, 2022	43,771,000	46,551,000				(2,911,000)
Balances at beginning of period at Dec. 31, 2022	$ (118,782)	$ 462	1,036,287	(1,071,718)	(5,880)	$ (77,933)
Net loss	$ (4,977)
Balances at end of period (in shares) at Jun. 30, 2023	44,009,000	46,935,000				(2,926,000)
Balances at end of period at Jun. 30, 2023	$ (118,954)	$ 465	1,041,280	(1,076,695)	(5,651)	$ (78,353)
Balances at beginning of period (in shares) at Mar. 31, 2023		46,763,000				(2,926,000)
Balances at beginning of period at Mar. 31, 2023	(118,736)	$ 464	1,036,538	(1,072,099)	(5,286)	$ (78,353)
Stock issued pursuant to employee stock plans (in shares)		172,000
Stock issued pursuant to employee stock plans, net of shares withheld for employee tax obligations	(1,199)	$ 1	(1,200)
Stock-based compensation	5,942		5,942
Net loss	(4,596)			(4,596)
Other comprehensive income (loss)	$ (365)				(365)
Balances at end of period (in shares) at Jun. 30, 2023	44,009,000	46,935,000				(2,926,000)
Balances at end of period at Jun. 30, 2023	$ (118,954)	$ 465	$ 1,041,280	$ (1,076,695)	$ (5,651)	$ (78,353)