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Summary of Significant Accounting Policies, Inventory, Inventory Unreturned and Contract Assets (Details) - USD ($) | 12 Months Ended |
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Mar. 31, 2022 | Mar. 31, 2021
Inventory [Abstract] |  |
Prior period over which allocations of labor and variable and fixed overhead costs are determined based on average actual use of production facilities | 12 months |
Reserve for excess and obsolete inventory | $ 13,520,000 | $ 13,246,000
Inventory Unreturned [Abstract] |  |
Period of normal operating cycle | 1 year |
Minimum [Member] |  |
Contract Assets [Abstract] |  |
Amortization period for core premiums | 6 years |
Amortization period for finished goods premiums | 6 years |
Maximum [Member] |  |
Inventory [Abstract] |  |
Percentage of inventory reserve to cost if no liquidation market exists for part | 100.00% |
Contract Assets [Abstract] |  |
Amortization period for core premiums | 8 years |
Amortization period for finished goods premiums | 8 years |

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- Definition The amortization period for core premiums. + References No definition available. + Details
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- Definition The amortization period for finished goods premiums. + References No definition available. + Details
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- References No definition available. + Details
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- Definition Percentage of inventory reserve to cost if no liquidation market exists for part. + References No definition available. + Details
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- Definition Represents the period of normal operating cycle, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Prior period over which the allocations of labor and variable and fixed overhead costs are determined based on the average actual use of the production facilities, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Amount of valuation reserve for inventory. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.BB) -URI http://asc.fasb.org/extlink&oid=27011343&loc=d3e100047-122729 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.6(a)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Details
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