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Investment Securities-Unrealized Gain (Loss) on Investments (Details) - USD ($) $ in Thousands | Mar. 31, 2019 | Mar. 31, 2018
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Schedule of Held-to-maturity Securities [Line Items] |  |
Debt Securities, Held-to-maturity | $ 11,137 | $ 12,075
Held-to-maturity Securities, Gross Unrealized Gains | 57 | 81
Held-to-maturity Securities, Gross Unrealized Losses | 87 | 247
Debt Securities, Held-to-maturity, Fair Value | 11,107 | 11,909
Debt Securities, Available-for-sale [Line Items] |  |
Available-for-sale Securities, Amortized Cost | 80,784 | 63,435
Available-for-sale Securities, Gross Unrealized Gains | 225 | 0
Available-for-sale Securities, Gross Unrealized Losses | 1,164 | 2,726
Available-for-sale Securities | 79,845 | 60,709
Government National Mortgage Association (GNMA) |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Debt Securities, Held-to-maturity | 1,214 | 1,434
Held-to-maturity Securities, Gross Unrealized Gains | 40 | 51
Held-to-maturity Securities, Gross Unrealized Losses | 0 | 0
Debt Securities, Held-to-maturity, Fair Value | 1,254 | 1,485
Debt Securities, Available-for-sale [Line Items] |  |
Available-for-sale Securities, Amortized Cost | 4,443 | 2,163
Available-for-sale Securities, Gross Unrealized Gains | 25 | 0
Available-for-sale Securities, Gross Unrealized Losses | 86 | 97
Available-for-sale Securities | 4,382 | 2,066
Federal Home Loan Mortgage Corporation (FHLMC) |  |
Debt Securities, Available-for-sale [Line Items] |  |
Available-for-sale Securities, Amortized Cost | 11,104 | 6,633
Available-for-sale Securities, Gross Unrealized Gains | 69 | 0
Available-for-sale Securities, Gross Unrealized Losses | 148 | 283
Available-for-sale Securities | 11,025 | 6,350
Federal National Mortgage Association (FNMA) |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Debt Securities, Held-to-maturity | 8,923 | 9,641
Held-to-maturity Securities, Gross Unrealized Gains | 0 | 0
Held-to-maturity Securities, Gross Unrealized Losses | 87 | 247
Debt Securities, Held-to-maturity, Fair Value | 8,836 | 9,394
Debt Securities, Available-for-sale [Line Items] |  |
Available-for-sale Securities, Amortized Cost | 27,094 | 24,638
Available-for-sale Securities, Gross Unrealized Gains | 131 | 0
Available-for-sale Securities, Gross Unrealized Losses | 617 | 1,227
Available-for-sale Securities | 26,608 | 23,411
Mortgage-Backed Securities |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Debt Securities, Held-to-maturity | 10,137 | 11,075
Held-to-maturity Securities, Gross Unrealized Gains | 40 | 51
Held-to-maturity Securities, Gross Unrealized Losses | 87 | 247
Debt Securities, Held-to-maturity, Fair Value | 10,090 | 10,879
Debt Securities, Available-for-sale [Line Items] |  |
Available-for-sale Securities, Amortized Cost | 42,641 | 33,434
Available-for-sale Securities, Gross Unrealized Gains | 225 | 0
Available-for-sale Securities, Gross Unrealized Losses | 851 | 1,607
Available-for-sale Securities | 42,015 | 31,827
US Government Agency Securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Available-for-sale Securities, Amortized Cost | 33,089 | 14,490
Available-for-sale Securities, Gross Unrealized Gains | 0 | 0
Available-for-sale Securities, Gross Unrealized Losses | 236 | 258
Available-for-sale Securities | 32,853 | 14,232
Corporate Bonds |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Debt Securities, Held-to-maturity | 1,000 | 1,000
Held-to-maturity Securities, Gross Unrealized Gains | 17 | 30
Held-to-maturity Securities, Gross Unrealized Losses | 0 | 0
Debt Securities, Held-to-maturity, Fair Value | 1,017 | 1,030
Debt Securities, Available-for-sale [Line Items] |  |
Available-for-sale Securities, Amortized Cost | 5,054 | 5,078
Available-for-sale Securities, Gross Unrealized Gains | 0 | 0
Available-for-sale Securities, Gross Unrealized Losses | 77 | 212
Available-for-sale Securities | $ 4,977 | 4,866
Other investments |  |
Debt Securities, Available-for-sale [Line Items] |  |
Available-for-sale Securities, Amortized Cost |  | 10,433
Available-for-sale Securities, Gross Unrealized Gains |  | 0
Available-for-sale Securities, Gross Unrealized Losses |  | 649
Available-for-sale Securities |  | $ 9,784

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