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Revenue Recognition (Tables) | 9 Months Ended
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Dec. 31, 2018
Revenue From Contract With Customer [Abstract] |
Revenue Disaggregated by Product Line and Geographic Area | The following table presents the Company’s revenue disaggregated by product line and geographic area:
|  | Three Months Ended |  |  | Nine Months Ended |
|  | December 31, |  |  | December 31, |
Product Line |  | 2018 |  |  | 2017 |  |  | 2018 |  |  | 2017 |
Heat transfer equipment |  | $ | 5,164 |  |  | $ | 7,608 |  |  | $ | 15,495 |  |  | $ | 18,591 |
Vacuum equipment |  |  | 3,765 |  |  |  | 3,858 |  |  |  | 28,823 |  |  |  | 15,270 |
All other |  |  | 8,269 |  |  |  | 5,815 |  |  |  | 23,872 |  |  |  | 21,495 |
Net sales |  | $ | 17,198 |  |  | $ | 17,281 |  |  | $ | 68,190 |  |  | $ | 55,356 |
Geographic Region |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Asia |  | $ | 966 |  |  | $ | 2,264 |  |  | $ | 5,591 |  |  | $ | 8,228 |
Canada |  |  | 549 |  |  |  | 1,847 |  |  |  | 15,672 |  |  |  | 5,046 |
Middle East |  |  | 806 |  |  |  | 1,023 |  |  |  | 1,705 |  |  |  | 2,958 |
South America |  |  | 47 |  |  |  | 485 |  |  |  | 239 |  |  |  | 1,055 |
U.S. |  |  | 14,320 |  |  |  | 11,301 |  |  |  | 42,846 |  |  |  | 37,276 |
All other |  |  | 510 |  |  |  | 361 |  |  |  | 2,137 |  |  |  | 793 |
Net sales |  | $ | 17,198 |  |  | $ | 17,281 |  |  | $ | 68,190 |  |  | $ | 55,356 |
Schedule of Net Contract Assets (Liabilities) | Net contract assets (liabilities) consisted of the following:
|  | December 31, 2018 |  |  | April 1, 2018 |  |  | Change |
Unbilled revenue (contract assets) |  | $ | 7,317 |  |  | $ | 6,092 |  |  | $ | 1,225 |
Customer deposits (contract liabilities) |  |  | (32,572 | ) |  |  | (26,585 | ) |  |  | (5,987 | )
Net contract liabilities |  | $ | (25,255 | ) |  | $ | (20,493 | ) |  | $ | (4,762 | )

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- Definition Tabular disclosure of contract balances and changes in contract balances. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130551-203045 + Details
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