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- Summary of Trading Securities (Details) - USD ($) $ in Thousands | Mar. 31, 2021 | Mar. 31, 2020
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Total Securities |  |
Amortized Cost | $ 202,145 |
Gross Unrealized Gains | 711 |
Gross Unrealized (Losses) | (114) |
Fair Value (1) | 202,742 |
Debt Securities - Held-to-Maturity |  |
Amortized Cost |  | $ 134,888
Gross Unrealized Gains |  | 901
Gross Unrealized (Losses) |  | (400)
Fair Value |  | 135,389
Corporate debt securities |  |
Debt Securities - Trading |  |
Amortized Cost | 178,384 |
Gross Unrealized Gains | 389 |
Gross Unrealized (Losses) | (114) |
Fair Value (1) | 178,659 |
Debt Securities - Held-to-Maturity |  |
Amortized Cost |  | 43,166
Gross Unrealized Gains |  | 210
Gross Unrealized (Losses) |  | (349)
Fair Value |  | 43,027
U.S. treasury securities |  |
Debt Securities - Trading |  |
Amortized Cost | 23,761 |
Gross Unrealized Gains | 322 |
Gross Unrealized (Losses) | 0 |
Fair Value (1) | $ 24,083 |
Debt Securities - Held-to-Maturity |  |
Amortized Cost |  | 91,722
Gross Unrealized Gains |  | 691
Gross Unrealized (Losses) |  | (51)
Fair Value |  | $ 92,362

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