Annual report pursuant to Section 13 and 15(d)

INCOME TAXES - Tax Reconciliation (Details)

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INCOME TAXES - Tax Reconciliation (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Income Tax Disclosure [Abstract]      
Taxes at federal statutory rate $ (28,245) $ 44,836 $ 47,275
State taxes, net of federal benefit 154 2,504 1,874
Non-deductible expenses 314 3,683 2,423
Stock-based compensation 751 (717) (426)
Valuation allowance 868 0 (1,151)
Other (1,322) 188 1,260
Income tax expense (benefit) $ (27,480) $ 50,494 $ 51,255