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Summary of Significant Accounting Policies (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Total | $ 45,631 | $ 40,545 | $ 136,306 | $ 140,804
Product and related sales [Member] |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Total | 44,518 | 39,787 | 132,705 | 137,336
Refrigerant Side Services [Member] |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Total | $ 1,113 | $ 758 | $ 3,601 | $ 3,468

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