Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Common Shares	Additional Paid-in Capital	Accumulated Earnings	Accumulated Other Comprehensive Income
Beginning balances at Dec. 31, 2020	$ 830,508	$ 710,387	$ 5,919	$ 114,202
Beginning balances, Shares at Dec. 31, 2020		269,497,768
Shares issued under stock option plan	173	$ 752	(579)
Shares issued under stock option plan, Shares		1,428,162
Stock-based compensation expense	4,021		4,021
Reclassification of liability classified options	5,201		5,201
Net earnings (loss)	117,221			117,221
Ending balances at Mar. 31, 2021	957,124	$ 711,139	14,562	231,423
Ending balances, Shares at Mar. 31, 2021		270,925,930
Beginning balances at Dec. 31, 2020	830,508	$ 710,387	5,919	114,202
Beginning balances, Shares at Dec. 31, 2020		269,497,768
Foreign currency translation adjustment	2,152
Net earnings (loss)	114,898
Ending balances at Jun. 30, 2021	967,679	$ 714,758	21,669	229,100	$ 2,152
Ending balances, Shares at Jun. 30, 2021		276,982,678
Beginning balances at Mar. 31, 2021	957,124	$ 711,139	14,562	231,423
Beginning balances, Shares at Mar. 31, 2021		270,925,930
Shares issued under stock option plan	1,779	$ 3,619	(1,840)
Shares issued under stock option plan, Shares		6,056,748
Stock-based compensation expense	8,473		8,473
Reclassification of liability classified options	474		474
Foreign currency translation adjustment	2,152				2,152
Net earnings (loss)	(2,323)			(2,323)
Ending balances at Jun. 30, 2021	967,679	$ 714,758	21,669	229,100	2,152
Ending balances, Shares at Jun. 30, 2021		276,982,678
Beginning balances at Dec. 31, 2021	1,025,733	$ 722,430	35,357	267,666	280
Beginning balances, Shares at Dec. 31, 2021		283,257,104
Shares issued and restricted stock units ("RSUs") vested under stock option plan	403	$ 3,325	(2,922)
Shares issued and restricted stock units ("RSUs") vested under stock option plan, Shares		1,264,077
Stock-based compensation expense	12,291		12,291
Foreign currency translation adjustment	507				507
Net earnings (loss)	168,573			168,573
Ending balances at Mar. 31, 2022	1,207,507	$ 725,755	44,726	436,239	787
Ending balances, Shares at Mar. 31, 2022		284,521,181
Beginning balances at Dec. 31, 2021	1,025,733	$ 722,430	35,357	267,666	280
Beginning balances, Shares at Dec. 31, 2021		283,257,104
Foreign currency translation adjustment	296
Net earnings (loss)	161,788
Ending balances at Jun. 30, 2022	1,212,856	$ 726,825	56,001	429,454	576
Ending balances, Shares at Jun. 30, 2022		285,052,302
Beginning balances at Mar. 31, 2022	1,207,507	$ 725,755	44,726	436,239	787
Beginning balances, Shares at Mar. 31, 2022		284,521,181
Shares issued and restricted stock units ("RSUs") vested under stock option plan	232	$ 1,070	(838)
Shares issued and restricted stock units ("RSUs") vested under stock option plan, Shares		531,121
Stock-based compensation expense	12,113		12,113
Foreign currency translation adjustment	(211)				(211)
Net earnings (loss)	(6,785)			(6,785)
Ending balances at Jun. 30, 2022	$ 1,212,856	$ 726,825	$ 56,001	$ 429,454	$ 576
Ending balances, Shares at Jun. 30, 2022		285,052,302