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Segment Information (Details) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2019 USD ($) | Sep. 30, 2018 USD ($) | Sep. 30, 2019 USD ($) segment | Sep. 30, 2018 USD ($)
Segment Reporting Information [Line Items] |  |  |  |
Number of operating segments | segment |  |  | 1 |
Revenue | $ 20,852 | $ 16,396 | $ 58,738 | $ 49,318
Operating costs and corporate expenses | 29,551 | 16,440 | 66,635 | 48,786
Inventory allowance | 3,350 |  | 3,350 | 0
Retirement of rental equipment | 1,512 |  | 1,512 | 0
Total other income, net | 89 | 180 | 567 | 179
(Loss) Income before provision for income taxes | (13,472) | 136 | (12,192) | 711
Corporate |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenue | 0 | 0 | 0 | 0
Operating costs and corporate expenses | 18,697 | 7,889 | 35,113 | 23,055
Inventory allowance | 0 |  | 0 |
Retirement of rental equipment | 0 |  | 0 |
Total other income, net | 89 | 180 | 567 | 179
(Loss) Income before provision for income taxes | (18,608) | (7,709) | (34,546) | (22,876)
Rental |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenue | 14,434 | 12,039 | 41,393 | 34,937
Operating costs and corporate expenses | 6,300 | 5,363 | 18,544 | 15,262
Inventory allowance | 987 |  | 987 |
Retirement of rental equipment | 1,512 |  | 1,512 |
Total other income, net | 0 | 0 | 0 | 0
(Loss) Income before provision for income taxes | 5,635 | 6,676 | 20,350 | 19,675
Sales |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenue | 5,877 | 3,947 | 15,816 | 13,328
Operating costs and corporate expenses | 4,390 | 3,081 | 12,508 | 10,196
Inventory allowance | 2,363 |  | 2,363 |
Retirement of rental equipment | 0 |  | 0 |
Total other income, net | 0 | 0 | 0 | 0
(Loss) Income before provision for income taxes | (876) | 866 | 945 | 3,132
Service and maintenance |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenue | 541 | 410 | 1,529 | 1,053
Operating costs and corporate expenses | 164 | 107 | 470 | 273
Inventory allowance | 0 |  | 0 |
Retirement of rental equipment | 0 |  | 0 |
Total other income, net | 0 | 0 | 0 | 0
(Loss) Income before provision for income taxes | $ 377 | $ 303 | $ 1,059 | $ 780

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