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Investment Securities-Schedule of Unrealized Loss on Investments (Details) - USD ($) $ in Thousands | 12 Months Ended
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Mar. 31, 2017 | Mar. 31, 2016
Schedule of Held-to-maturity Securities [Line Items] |  |  |
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss |  | $ 60 |
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value |  | 7,623 |
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss |  | 0 |
Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value |  | 0 |
Held-to-maturity Securities, Continuous Unrealized Loss Position, Aggregate Loss |  | 60 |
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value |  | 7,623 |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss |  | 1,403 | $ 3
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value |  | 47,162 | 2,996
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss |  | 537 | 375
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value |  | 11,446 | 36,537
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss |  | 1,940 | 378
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value |  | 58,608 | 39,533
Securities Continuous Unrealized Loss Position, Less than 12 months |  | 1,463 |
Securities Continuous Unrealized Loss Position Less than 12 months Fair Value |  | 54,785 |
Securities, Continuous Unrealized Loss Position ,12 months or Longer |  | 537 |
Securities, Continuous Unrealized Loss Position, 12 months or Longer, Fair Value |  | 11,446 |
Unrealized Loss on Securities |  | 2,000 | 378
Securities Continuous Unrealized Loss Position, Fair Value |  | 66,231 |
Mortgage-Backed Securities |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss |  | 1,171 | 0
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value |  | 34,716 | 0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss |  | 41 | 136
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value |  | 1,942 | 15,502
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss |  | 1,212 | 136
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value |  | 36,658 | 15,502
US Government Agency Securities |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss |  | 92 | 3
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value |  | 7,482 | 2,996
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss |  | 0 | 32
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value |  | 0 | 11,242
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss |  | 92 | 35
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value |  | 7,482 | 14,238
Corporate Bonds |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss |  | 140 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value |  | 4,964 |
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss |  | 0 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value |  | 0 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss |  | 140 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value |  | 4,964 |
Other investments |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | [1] | 0 | 0
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | [1] | 0 | 0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | [1] | 496 | 207
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | [1] | 9,504 | 9,793
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss | [1] | 496 | 207
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | [1] | 9,504 | $ 9,793
Mortgage-Backed Securities |  |  |
Schedule of Held-to-maturity Securities [Line Items] |  |  |
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss |  | 60 |
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value |  | 7,623 |
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss |  | 0 |
Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value |  | 0 |
Held-to-maturity Securities, Continuous Unrealized Loss Position, Aggregate Loss |  | 60 |
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value |  | $ 7,623 |
[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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