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Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($)
shares in Thousands, $ in Thousands
Common Stock Outstanding [Member]
Warrants [Member]
Treasury Stock [Member]
Additional Paid-in Capital [Member]
AOCI Attributable to Parent [Member]
Retained Earnings [Member]
Total
Balance (in shares) at Dec. 31, 2020 70,890            
Balance at Dec. 31, 2020 $ 585 $ 10,530 $ 0 $ 1,006,100 $ (1,494) $ (403,737) $ 611,984
Net loss 0 0 0 0 0 (20,392) (20,392)
Other comprehensive income (loss) $ 0 0 0 0 (61) 0 (61)
Balance (in shares) at Mar. 31, 2021 70,890            
Balance at Mar. 31, 2021 $ 585 10,530 0 1,006,100 (1,555) (424,129) 591,531
Balance (in shares) at Dec. 31, 2021 109,143            
Balance at Dec. 31, 2021 $ 7,844 0 (22,785) 1,827,782 20,358 (535,628) 1,297,571
Net loss 0 0 0 0 0 (11,132) (11,132)
Other comprehensive income (loss) 0 0 0 0 (61) 0 (61)
Stock-based compensation expense $ 0 0 0 6,018 0 0 6,018
Common shares issued upon vesting of share-based awards (in shares) 336            
Common shares issued upon vesting of share-based awards $ 24 0 0 378 0 0 402
Treasury shares withheld (in shares) (100)            
Treasury shares withheld $ 0 0 (1,506) 0 0 0 (1,506)
Balance (in shares) at Mar. 31, 2022 109,379            
Balance at Mar. 31, 2022 $ 7,868 $ 0 $ (24,291) $ 1,834,178 $ 20,297 $ (546,760) $ 1,291,292