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Supplemental Cash Flow Information - Additional Information (Details) - USD ($) $ in Thousands | 12 Months Ended
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Mar. 31, 2020 | Mar. 31, 2019 | Mar. 31, 2018
Supplemental Cash Flow Elements [Abstract] |  |  |
Cash paid during the year for interest | $ 2,854 | $ 2,966 | $ 3,075
Cash paid during the year for income taxes | 7,804 | 10,176 | 8,790
Cumulative-effect adjustment from adoption of accounting guidance | 0 | 997 | 0
Shares issued for contingent compensation payment | 425 | 425 | 0
Non-cash investing activities: |  |  |
Shares issued for acquisition of business | 0 | 0 | 612
Conversion of note receivable | 902 | 0 | 0
Contribution of investment for purchase of intangible assets | 2,201 | 0 | 0
Non-cash financing activities: |  |  |
Establishment of net deferred tax assets related to tax receivable agreement | 37,394 | 56,010 | 34,492
Dividends declared but not paid | 8,027 | 5,673 | 3,893
Members’ distributions declared but not paid | $ 5,829 | $ 17,081 | $ 11,837

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