Annual report pursuant to Section 13 and 15(d)

Schedule II - Valuation and Qualifying Accounts (Details)

v3.20.4
Schedule II - Valuation and Qualifying Accounts (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Allowance for doubtful accounts      
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]      
Balance at Beginning of Year $ 1,092 $ 1,117 $ 461
Additions 0 514 852
Deductions (Chargeoffs) (676) (539) (196)
Balance at End of Year 416 1,092 1,117
Valuation allowance for deferred tax assets      
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]      
Balance at Beginning of Year 39,932 33,876 28,357
Additions 6,585 5,977 5,519
Deductions (Chargeoffs) 0 0 0
Balance at End of Year   39,853  
Balance at End of Year $ 46,517 $ 39,932 $ 33,876