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Revenue - Schedule of Deferred Charges Activity (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Deferred charges beginning balance $ 1,433 $ 1,438
Additions, net of adjustments, during the period 794 1,241
Recognized as cost of sales (921) (1,246)
Deferred charges ending balance 1,306 1,433
December 31, 2021 [Member]    
Recognized as cost of sales 764 741
December 31, 2022 [Member]    
Recognized as cost of sales 420 [1] 531 [2]
December 31, 2023 and Thereafter [Member]    
Recognized as cost of sales $ 122 [1] $ 161 [2]
[1] Amounts included in Other Assets in the Company's Consolidated Balance Sheets at December 31, 2020.
[2] Amounts included in Other Assets in the Company's Consolidated Balance Sheets at December 31, 2019.