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v3.20.1

Net Investment and Interest Income (Details) - USD ($) $ in Thousands | 12 Months Ended
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Mar. 31, 2020 | Mar. 31, 2019 | Mar. 31, 2018
Net Investment Income [Line Items] |  |  |
Investment income | $ 142,683 | $ 115,436 | $ 111,913
Less: investment expenses | (4,854) | (4,502) | (4,766)
Investment income, related party | 0 | 0 | 3,326
Net investment and interest income | 137,829 | 110,934 | 110,473
Fixed Maturities [Member] |  |  |
Net Investment Income [Line Items] |  |  |
Investment income | 107,434 | 99,348 | 84,476
Real Estate [Member] |  |  |
Net Investment Income [Line Items] |  |  |
Investment income | 7,304 | 5,538 | 5,344
Insurance policy loans [Member] |  |  |
Net Investment Income [Line Items] |  |  |
Investment income | 974 | 1,305 | 1,212
Mortgage loans [Member] |  |  |
Net Investment Income [Line Items] |  |  |
Investment income | 17,164 | 16,674 | 17,783
Short-term, amounts held by ceding reinsurers, net and other investments [Member] |  |  |
Net Investment Income [Line Items] |  |  |
Investment income | $ 9,807 | $ (7,429) | $ 3,098

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