Unaudited Condensed Consolidated Statement of Changes in Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock ($.001 Par Value)	Paid-In Capital in Excess of Par	Retained Earnings	Treasury Stock (at cost)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (in shares)					0
Beginning balance (in shares) at Dec. 31, 2021		50,193,656
Beginning balance at Dec. 31, 2021	$ 1,135,390	$ 50	$ 1,129,996	$ 5,344	$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issued pursuant to stock compensation plans (in shares)		141,581
Stock-based compensation	3,142		3,142
Issued pursuant to exercise of warrants (in shares)		14,153
Issued pursuant to exercise of warrants	47		47
Tax withholding for stock compensation plans	(58)		(58)
Net Income(loss)	(872)			(872)
Ending balance (in shares) at Mar. 31, 2022		50,349,390
Ending balance (in shares) at Mar. 31, 2022					0
Ending balance at Mar. 31, 2022	1,137,649	$ 50	1,133,127	4,472	$ 0
Beginning balance (in shares) at Dec. 31, 2021		50,193,656
Beginning balance at Dec. 31, 2021	1,135,390	$ 50	1,129,996	5,344	$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income(loss)	154,622
Ending balance (in shares) at Jun. 30, 2022		50,875,988
Ending balance (in shares) at Jun. 30, 2022					457,549
Ending balance at Jun. 30, 2022	1,268,841	$ 51	1,137,575	159,966	$ (28,751)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (in shares)					0
Beginning balance (in shares) at Mar. 31, 2022		50,349,390
Beginning balance at Mar. 31, 2022	1,137,649	$ 50	1,133,127	4,472	$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	4,400		4,400
Issued pursuant to exercise of warrants (in shares)		987,411
Issued pursuant to exercise of warrants	54	$ 1	53
Forfeited pursuant to stock compensation plans (in shares)		(3,264)
Tax withholding for stock compensation plans	(5)		(5)
Stock repurchase program (in shares)		(457,549)			(457,549)
Stock repurchase program	(28,751)				$ (28,751)
Net Income(loss)	155,494			155,494
Ending balance (in shares) at Jun. 30, 2022		50,875,988
Ending balance (in shares) at Jun. 30, 2022					457,549
Ending balance at Jun. 30, 2022	$ 1,268,841	$ 51	1,137,575	159,966	$ (28,751)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (in shares)					457,549
Beginning balance (in shares)					0
Beginning balance (in shares) at Dec. 31, 2022	49,814,874	49,814,874
Beginning balance at Dec. 31, 2022	$ 1,532,617	$ 50	1,047,063	485,504	$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issued pursuant to stock compensation plans (in shares)		268,748
Stock-based compensation	5,320		5,320
Tax withholding and retirement related to stock compensation plans (in shares)		(16,281)
Tax withholding for stock compensation plans	(2,683)		(2,683)
Issued pursuant to exercise of warrants (in shares)		209,185
Issued pursuant to exercise of warrants	130		130
Net Income(loss)	89,199			89,199
Ending balance (in shares) at Mar. 31, 2023		50,276,526
Ending balance (in shares) at Mar. 31, 2023					0
Ending balance at Mar. 31, 2023	$ 1,624,583	$ 50	1,049,830	574,703	$ 0
Beginning balance (in shares) at Dec. 31, 2022	49,814,874	49,814,874
Beginning balance at Dec. 31, 2022	$ 1,532,617	$ 50	1,047,063	485,504	$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income(loss)	$ 156,480
Ending balance (in shares) at Jun. 30, 2023	50,473,001	50,473,001
Ending balance (in shares) at Jun. 30, 2023					0
Ending balance at Jun. 30, 2023	$ 1,700,153	$ 50	1,058,119	641,984	$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (in shares)					0
Beginning balance (in shares) at Mar. 31, 2023		50,276,526
Beginning balance at Mar. 31, 2023	1,624,583	$ 50	1,049,830	574,703	$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	7,246		7,246
Issued pursuant to exercise of warrants (in shares)		186,373
Issued pursuant to exercise of warrants	228		228
Forfeited pursuant to stock compensation plans (in shares)		(1,013)
Employee stock purchase plan (in shares)		11,115
Employee stock purchase plan	815		815
Net Income(loss)	$ 67,281			67,281
Ending balance (in shares) at Jun. 30, 2023	50,473,001	50,473,001
Ending balance (in shares) at Jun. 30, 2023					0
Ending balance at Jun. 30, 2023	$ 1,700,153	$ 50	$ 1,058,119	$ 641,984	$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (in shares)					0