Consolidated Statements of Changes in Stockholders' Equity (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Total	Common stock	Preferred stock	Additional paid-in capital	Accumulated deficit	Accumulated other comprehensive loss	Treasury stock
Beginning balance (in shares) at Dec. 31, 2022		51,102					6,151
Increase (Decrease) in Stockholders' Equity
Common stock issued upon vesting of restricted stock		268
Common stock issued for ESPP purchases		68
Tax withholding upon vesting of employee stock awards							96
Ending balance (in shares) at Mar. 31, 2023		51,438					6,247
Ending balance at Mar. 31, 2023		$ 5
Beginning balance at Dec. 31, 2022				$ 982,718	$ (173,829)	$ (522)	$ (162,546)
Increase (Decrease) in Stockholders' Equity
Stock-based compensation to employees and directors				5,795
Common stock issued for ESPP purchases				1,121
Net loss	$ (10,307)				(10,307)
Net other comprehensive income	4					4
Tax withholding upon vesting of employee stock awards							1,934
Ending balance at Mar. 31, 2023	$ 640,505			989,634	(184,136)	(518)	$ (164,480)
Increase (Decrease) in Stockholders' Equity
Common stock, shares outstanding (in shares)		45,191
Preferred stock, $0.0001 par value, authorized shares - 5,000, issued and outstanding - none			$ 0
Common stock, shares outstanding (in shares)	45,414
Preferred stock, $0.0001 par value, authorized shares - 5,000, issued and outstanding - none	$ 0
Beginning balance (in shares) at Dec. 31, 2023		51,770					6,356
Increase (Decrease) in Stockholders' Equity
Common stock issued upon vesting of restricted stock		384
Common stock issued for ESPP purchases		56
Tax withholding upon vesting of employee stock awards							121
Ending balance (in shares) at Mar. 31, 2024		52,210					6,477
Ending balance at Mar. 31, 2024		$ 5
Beginning balance at Dec. 31, 2023	359,132			1,007,649	(481,671)	(506)	$ (166,345)
Increase (Decrease) in Stockholders' Equity
Stock-based compensation to employees and directors				4,776
Common stock issued for ESPP purchases				935
Net loss	(73,928)				(73,928)
Net other comprehensive income	4					4
Tax withholding upon vesting of employee stock awards							3,172
Ending balance at Mar. 31, 2024	$ 287,747			$ 1,013,360	$ (555,599)	$ (502)	$ (169,517)
Increase (Decrease) in Stockholders' Equity
Common stock, shares outstanding (in shares)	45,733	45,733
Preferred stock, $0.0001 par value, authorized shares - 5,000, issued and outstanding - none	$ 0		$ 0