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Revenue Recognition (Tables) | 12 Months Ended
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Dec. 31, 2018
Revenue from Contract with Customer [Abstract] |
Schedule of Disaggregation of Revenue | Disaggregated net sales by major source:
| Years Ending December 31,
| 2018 |  | 2017 |  | 2016
| (in thousands)
Rooftop Units | $ | 333,105 |  |  | $ | 317,414 |  |  | $ | 309,641 |
Condensing Units | 18,282 |  |  | 19,276 |  |  | 13,987 |
Air Handlers | 21,905 |  |  | 22,570 |  |  | 19,792 |
Outdoor Mechanical Rooms | 2,408 |  |  | 3,238 |  |  | 4,515 |
Water Source Heat Pumps | 14,660 |  |  | 9,911 |  |  | 5,835 |
Part Sales | 26,732 |  |  | 20,756 |  |  | 20,374 |
Other | 16,855 |  |  | 12,067 |  |  | 9,833 |
Net Sales | $ | 433,947 |  |  | $ | 405,232 |  |  | $ | 383,977 |
Other sales include freight, extended warranties and miscellaneous revenue. Disaggregated units sold by major source:
| Years Ending December 31,
| 2018 |  | 2017 |  | 2016
Rooftop Units | 15,273 |  |  | 16,003 |  |  | 16,764 |
Condensing Units | 2,007 |  |  | 2,252 |  |  | 1,639 |
Air Handlers | 2,500 |  |  | 2,577 |  |  | 2,114 |
Outdoor Mechanical Rooms | 38 |  |  | 64 |  |  | 65 |
Water Source Heat Pumps | 5,334 |  |  | 2,485 |  |  | 316 |
Total Units | 25,152 |  |  | 23,381 |  |  | 20,898 |

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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130545-203045 + Details
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- References No definition available. + Details
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