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SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Allowance for doubtful accounts, sales returns and cash discounts      
Changes to valuation allowance      
Balance at beginning of period $ 1,878 $ 2,045 $ 1,589
Charged to cost and expenses 14,799 9,664 9,583
Deductions (12,001) (9,831) (9,127)
Balance at end of period 4,676 1,878 2,045
Allowance on Deferred Tax Assets and Unrecognized Tax Benefits      
Changes to valuation allowance      
Balance at beginning of period 35,993 43,853 42,748
Charged to cost and expenses (8,980) (7,860) 1,105
Balance at end of period $ 27,013 $ 35,993 $ 43,853