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Investment Securities Investment Securities Unrealized losses and fair value of securities (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2015 | Mar. 31, 2015
Schedule of Investments [Line Items] |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss |  | $ (244) | $ (57)
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value |  | 18,936 | 12,943
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss |  | (1,687) | (1,090)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value |  | 56,638 | 58,499
Available-for-sale Securities, Gross Unrealized Loss |  | (1,931) | (1,147)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value |  | 75,574 | 71,442
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss |  | (107) |
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value |  | 12,428 |
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 |  | (107) |
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value |  | 12,428 |
Securities Continuous Loss Position Less than 12 months |  | (351) | (57)
Securities Continuous Unrealized Loss Position Less than 12 months Fair Value |  | 31,364 | 12,943
Securities, Continuous Unrealized Loss Position ,12 months or Longer |  | (1,687) | (1,090)
Securities, Continuous Unrealized Loss Position, 12 months or Longer, Fair Value |  | 56,638 | 58,499
Unrealized Loss on Securities |  | (2,038) | (1,147)
Securities, Continuous Unrealized Loss Position, fair value |  | 88,002 | 71,442
Mortgage-backed securities |  |  |
Schedule of Investments [Line Items] |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss |  | (3) | 0
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value |  | 1,215 | 0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss |  | (515) | (287)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value |  | 20,982 | 22,297
Available-for-sale Securities, Gross Unrealized Loss |  | (518) | (287)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value |  | 22,197 | 22,297
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss |  | (107) |
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value |  | 12,428 |
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 |  | (107) |
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value |  | 12,428 |
US Government Agency Securities |  |  |
Schedule of Investments [Line Items] |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss |  | (241) | (57)
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value |  | 17,721 | 12,943
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss |  | (847) | (605)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value |  | 25,981 | 26,400
Available-for-sale Securities, Gross Unrealized Loss |  | (1,088) | (662)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value |  | 43,702 | 39,343
Other |  |  |
Schedule of Investments [Line Items] |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate 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, Aggregate Loss | [1] | (325) | (198)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | [1] | 9,675 | 9,802
Available-for-sale Securities, Gross Unrealized Loss | [1] | (325) | (198)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | [1] | $ 9,675 | $ 9,802
[1] | (1) CRA fund comprised of over 95% agency securities.

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