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Revenue Recognition (Tables) | 3 Months Ended
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Mar. 31, 2018
Revenue from Contract with Customer [Abstract] |
Schedule of Disaggregation of Revenue | Disaggregated net sales by major source:
| Three Months Ended March 31,
| 2018 |  | 2017
| (in thousands)
Rooftop Units | $ | 74,815 |  |  | $ | 66,872 |
Condensing Units | 4,281 |  |  | 4,215 |
Air Handlers | 5,240 |  |  | 5,133 |
Outdoor Mechanical Rooms | 973 |  |  | 1,204 |
Water Source Heat Pumps | 4,387 |  |  | 1,854 |
Other | 9,386 |  |  | 6,800 |
Net Sales | $ | 99,082 |  |  | $ | 86,078 |
Disaggregated units sold by major source:
| Three Months Ended March 31,
| 2018 |  | 2017
Rooftop Units | 3,468 |  |  | 3,474 |
Condensing Units | 411 |  |  | 532 |
Air Handlers | 536 |  |  | 613 |
Outdoor Mechanical Rooms | 14 |  |  | 24 |
Water Source Heat Pumps | 1,614 |  |  | 378 |
Total Units | 6,043 |  |  | 5,021 |

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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=82913847&loc=SL49130545-203045 + Details
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