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Investment Securities-Schedule of Unrealized 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, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss |  | $ 0 | $ 188
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value |  | 0 | 7,681
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss |  | 87 | 59
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value |  | 8,752 | 1,612
Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss |  | 87 | 247
Debt Securities, Held-to-maturity, Unrealized Loss Position, Fair Value |  | 8,752 | 9,293
Debt Securities, Available-for-sale [Line Items] |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss |  | 23 | 181
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value |  | 20,851 | 11,368
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss |  | 1,141 | 2,545
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value |  | 43,766 | 48,907
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss |  | 1,164 | 2,726
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value |  | 64,617 | 60,275
Mortgage-Backed Securities |  |  |
Schedule of Held-to-maturity Securities [Line Items] |  |  |
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss |  | 0 | 188
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value |  | 0 | 7,681
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss |  | 87 | 59
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value |  | 8,752 | 1,612
Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss |  | 87 | 247
Debt Securities, Held-to-maturity, Unrealized Loss Position, Fair Value |  | 8,752 | 9,293
Debt Securities, Available-for-sale [Line Items] |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss |  | 0 | 101
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value |  | 0 | 3,702
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss |  | 851 | 1,506
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value |  | 26,787 | 28,124
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss |  | 851 | 1,607
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value |  | 26,787 | 31,826
US Government Agency Securities |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss |  | 23 | 80
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value |  | 20,851 | 7,666
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss |  | 213 | 178
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value |  | 12,002 | 6,566
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss |  | 236 | 258
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value |  | 32,853 | 14,232
Corporate Bonds |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss |  | 0 | 0
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value |  | 0 | 0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss |  | 77 | 212
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value |  | 4,977 | 4,866
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss |  | 77 | 212
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value |  | $ 4,977 | 4,866
Other investments |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | [1] |  | 0
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | [1] |  | 0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | [1] |  | 649
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | [1] |  | 9,351
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss | [1] |  | 649
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | [1] |  | $ 9,351
[1] | 1) Primarily comprised of an investment in a CRA fund with 95% of its underlying investments consisting of government and agency backed securities.

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