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Goodwill and Intangible Assets, Intangible Assets Subject to Amortization (Details) - USD ($) | 12 Months Ended |
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Mar. 31, 2020 | Mar. 31, 2019
Intangible assets subject to amortization [Abstract] |  |
Weighted Average Amortization Period | 9 years |
Gross Carrying Value | $ 12,097,000 | $ 12,933,000
Accumulated Amortization | 5,704,000 | 4,502,000
Fully amortized intangible assets, retired | $ 470,000 |
Trademarks [Member] |  |
Intangible assets subject to amortization [Abstract] |  |
Weighted Average Amortization Period | 9 years |
Gross Carrying Value | $ 827,000 | 1,007,000
Accumulated Amortization | $ 435,000 | 464,000
Customer Relationships [Member] |  |
Intangible assets subject to amortization [Abstract] |  |
Weighted Average Amortization Period | 11 years |
Gross Carrying Value | $ 8,453,000 | 8,610,000
Accumulated Amortization | $ 4,376,000 | 3,547,000
Order Backlog [Member] |  |
Intangible assets subject to amortization [Abstract] |  |
Weighted Average Amortization Period | 6 months |
Gross Carrying Value | $ 0 | 325,000
Accumulated Amortization | $ 0 | 180,000
Developed Technology [Member] |  |
Intangible assets subject to amortization [Abstract] |  |
Weighted Average Amortization Period | 5 years |
Gross Carrying Value | $ 2,817,000 | 2,991,000
Accumulated Amortization | $ 893,000 | $ 311,000

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- Definition Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 928 -SubTopic 340 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6473545&loc=d3e61844-108004 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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