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v3.19.1

Investment in Affiliate (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Mar. 31, 2019 | Mar. 31, 2018 | Mar. 31, 2017
Equity method investment [Abstract] |  |  |
Equity in earnings of non-consolidated affiliate | $ 0.7 | $ 0.2 | $ 0.1
Nikkei Heat Exchanger Company, Ltd. [Member] |  |  |
Equity method investment [Abstract] |  |  |
Equity method investment, percent owned | 50.00% |  |
Equity method investment | $ 3.8 | 3.6 |
Equity in earnings of non-consolidated affiliate | $ 0.7 | $ 0.2 | $ 0.1

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- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571 + Details
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