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Earnings Per Share (Parentheticals) (Details) - shares shares in Thousands | 3 Months Ended | 6 Months Ended
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Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Earnings Per Share [Abstract] |  |  |  |
Denominator for Basic earnings per share - weighted-average shares outstanding | 7,620 | 7,731 | 7,622 | 7,722
Basic weighted-average shares outstanding and unvested restricted stock units expected to vest | 7,652 | 7,777 | 7,651 | 7,766
Percentage allocated to shareholders * | 100.00% | 99.00% | 100.00% | 99.00%

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- Definition Basic weighted average number of shares outstanding and unvested restricted stock units expected to vest. + References No definition available. + Details
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- Definition Net income loss allocated to stockholders, percentage. + References No definition available. + Details
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- References No definition available. + Details
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- Definition Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=125511455&loc=d3e1448-109256 + Details
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