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Revenue - Schedule of Deferred Charges Activity (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Deferred charges beginning balance |  | $ 1,438 | $ 1,374 |
Additions during the period |  | 1,241 | 1,462 |
Recognized as cost of sales |  | (1,246) | (1,398) |
Deferred charges ending balance |  | 1,433 | 1,438 |
December 31, 2020 [Member] |  |  |  |
Recognized as cost of sales |  | 741 | 428 | [1]
December 31, 2021 [Member] |  |  |  |
Recognized as cost of sales | [1] | 531 |  |
December 31, 2022 and Thereafter [Member] |  |  |  |
Recognized as cost of sales | [1] | $ 161 |  |
December 31, 2019 [Member] |  |  |  |
Recognized as cost of sales |  |  | 803 |
December 31, 2021 and ThereAfter [Member] |  |  |  |
Recognized as cost of sales | [1] |  | $ 207 |
[1] | Amounts included in Other Assets in the Company's Consolidated Balance Sheets at December 31, 2018.

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