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

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