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Schedule II (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
SEC Schedule, 12-09, Allowance, Credit Loss      
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance at Beginning of Year $ 41 $ 50 $ 25
(Recovered)/ Charged to Costs & Expenses 51 27 4
Charged to Other Accounts 0 0 36
Deductions 2 36 15
Balance at End of Year 90 41 50
SEC Schedule, 12-09, Allowance, Chargebacks      
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance at Beginning of Year 179 476 2,344
(Recovered)/ Charged to Costs & Expenses 83 291 1,316
Charged to Other Accounts 0 0 0
Deductions 40 588 3,184
Balance at End of Year $ 222 $ 179 $ 476