Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Treasury Stock, Common [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Total
Balance (in shares) at Dec. 31, 2021	235,219,000	0
Balance at Dec. 31, 2021	$ 235	$ 0	$ 954,649	$ (785,374)	$ (264)	$ 169,246
Stock-based compensation	$ 0		8,416	0	0	8,416
Exercise of stock options (in shares)	43,000	0
Exercise of stock options	$ 0	$ 0	18	0	0	18
Issuance of common stock related to vesting of restricted stock units (in shares)	1,633,000	0
Issuance of common stock related to vesting of restricted stock units	$ 2	$ 0	0	0	0	2
Shares withheld related to net share settlement of equity awards (in shares)	0	443,000
Shares withheld related to net share settlement of equity awards	$ 0	$ 0	(352)	0	0	(352)
Cancellation of treasury stock (in shares)	0	(443,000)
Cancellation of treasury stock	$ 0	$ 0	0	0	0	0
Other comprehensive income (loss)	0	0	0	0	(2,124)	(2,124)
Net loss	0	0		(75,561)	0	(75,561)
Cancellation of treasury stock	$ (0)	$ (0)	(0)	(0)	(0)	(0)
Balance (in shares) at Dec. 31, 2022	236,895,000	0
Balance at Dec. 31, 2022	$ 237	$ 0	962,731	(860,935)	(2,388)	99,645
Stock-based compensation	$ 0		7,918	0	0	$ 7,918
Exercise of stock options (in shares)	13,000	0				13,300
Exercise of stock options	$ 0	$ 0	5	0	0	$ 5
Issuance of common stock related to vesting of restricted stock units (in shares)	3,270,000	0
Issuance of common stock related to vesting of restricted stock units	$ 2	$ 0	0	0	0	2
Shares withheld related to net share settlement of equity awards (in shares)	0	657,000
Shares withheld related to net share settlement of equity awards	$ 0	$ 1	(497)	0	0	(496)
Cancellation of treasury stock (in shares)	0	(657,000)
Cancellation of treasury stock	$ 0	$ 1	0	0	0	(1)
Other comprehensive income (loss)	0			0	1,776	1,776
Net loss	0			(78,433)	0	(78,433)
Cancellation of treasury stock	$ (0)	$ (1)	(0)	(0)	(0)	1
Issuance of common stock, net of issuance costs (in shares)	24,744,000	0
Issuance of common stock, net of issuance costs	$ 26			0	0	2,998
Balance (in shares) at Dec. 31, 2023	264,922,000	0
Balance at Dec. 31, 2023	$ 265	$ 0	$ 973,129	$ (939,368)	$ (612)	$ 33,414