CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (UNAUDITED) - USD ($) $ in Thousands	Total	Common Stock	Paid-in Capital in Excess of Par Value	Accumulated Deficit
Beginning Balance at Dec. 31, 2020	$ (92,413)	$ 1,178	$ (85,232)	$ (8,359)
Beginning Balance (in shares) at Dec. 31, 2020		117,871,141
Common stock awards under incentive plans	505	$ 1	504
Common stock awards under incentive plans (in shares)		46,875
Net loss	(4,624)			(4,624)
Ending Balance at Mar. 31, 2021	(96,532)	$ 1,179	(84,728)	(12,983)
Ending Balance (in shares) at Mar. 31, 2021		117,918,016
Beginning Balance at Dec. 31, 2020	(92,413)	$ 1,178	(85,232)	(8,359)
Beginning Balance (in shares) at Dec. 31, 2020		117,871,141
Net loss	(40,009)
Ending Balance at Jun. 30, 2021	(131,409)	$ 1,180	(84,221)	(48,368)
Ending Balance (in shares) at Jun. 30, 2021		117,964,891
Beginning Balance at Mar. 31, 2021	(96,532)	$ 1,179	(84,728)	(12,983)
Beginning Balance (in shares) at Mar. 31, 2021		117,918,016
Common stock awards under incentive plans	508	$ 1	507
Common stock awards under incentive plans (in shares)		46,875
Net loss	(35,385)			(35,385)
Ending Balance at Jun. 30, 2021	(131,409)	$ 1,180	(84,221)	(48,368)
Ending Balance (in shares) at Jun. 30, 2021		117,964,891
Beginning Balance at Dec. 31, 2021	(145,742)	$ 1,182	(83,286)	(63,638)
Beginning Balance (in shares) at Dec. 31, 2021		118,290,600
Common stock awards under incentive plans	499	$ 1	498
Common stock awards under incentive plans (in shares)		46,875
Net loss	(12,234)			(12,234)
Ending Balance at Mar. 31, 2022	(157,477)	$ 1,183	(82,788)	(75,872)
Ending Balance (in shares) at Mar. 31, 2022		118,337,475
Beginning Balance at Dec. 31, 2021	(145,742)	$ 1,182	(83,286)	(63,638)
Beginning Balance (in shares) at Dec. 31, 2021		118,290,600
Net loss	(29,495)
Ending Balance at Jun. 30, 2022	(174,665)	$ 1,187	(82,719)	(93,133)
Ending Balance (in shares) at Jun. 30, 2022		118,723,067
Beginning Balance at Mar. 31, 2022	(157,477)	$ 1,183	(82,788)	(75,872)
Beginning Balance (in shares) at Mar. 31, 2022		118,337,475
Common stock awards under incentive plans	508	$ 9	499
Common stock awards under incentive plans (in shares)		859,038
Shares repurchased related to incentive plans	(435)	$ (5)	(430)
Shares repurchased related to incentive plans (in shares)		(473,446)
Net loss	(17,261)			(17,261)
Ending Balance at Jun. 30, 2022	$ (174,665)	$ 1,187	$ (82,719)	$ (93,133)
Ending Balance (in shares) at Jun. 30, 2022		118,723,067