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Revenue Recognition - Schedule of Unamortized Installation Cost and Sales Commissions (Details) - USD ($) $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2020 | Dec. 31, 2019
Balance at January 1, 2020 | $ 274 | $ 424
Incremental costs deferred | 143 | 513
Deferred costs recognized | (332) | (663)
Balance at September 30, 2020 | 85 | 274
Installation Costs [Member] |  |
Balance at January 1, 2020 | 187 |
Incremental costs deferred | 83 |
Deferred costs recognized | (212) |
Balance at September 30, 2020 | 58 | 187
Sales Commissions [Member] |  |
Balance at January 1, 2020 | 87 |
Incremental costs deferred | 60 |
Deferred costs recognized | (120) |
Balance at September 30, 2020 | $ 27 | $ 87

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