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Investment Securities-Schedule of Unrealized Loss on Investments (Details) - USD ($) $ in Thousands		Mar. 31, 2019	Mar. 31, 2018
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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