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Income Taxes, Unrecognized Tax Benefits (Details) - USD ($) | 12 Months Ended
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Mar. 31, 2020 | Mar. 31, 2019 | Mar. 31, 2018
Unrecognized tax benefits [Roll Forward] |  |  |
Balance at beginning of period | $ 1,083,000 | $ 1,219,000 | $ 1,092,000
Additions based on tax positions related to the current year | 362,000 | 91,000 | 234,000
Reductions for tax positions of prior year | (434,000) | (227,000) | (107,000)
Balance at end of period | 1,011,000 | 1,083,000 | 1,219,000
Unrecognized tax benefits that would impact effective tax rate | 823,000 | 938,000 | 1,054,000
Recognized interest and penalties | (50,000) | (23,000) | $ 5,000
Interest and penalties accrued | $ 74,000 | $ 124,000 |

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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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- Definition Amount of unrecognized tax benefits. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 10B -URI http://asc.fasb.org/extlink&oid=116821951&loc=SL37586934-109318 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319 + Details
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- Definition Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32718-109319 + Details
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