Debt Securities - Available for Sale Securities Continuous Unrealized Loss Position Fair Value (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Jun. 30, 2020
Debt Securities, Available-for-sale [Line Items]
Estimated Fair Value	$ 96,159	$ 127,537
Less than 12 Months, Fair Value	6,517	12,006
12 Months or Longer, Fair Value	2,100	2,435
Total, Fair Value	8,617	14,441
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract] (Deprecated 2018-01-31)
12 Months or More, Fair Value	(10)	(144)
12 Months or More, Unrealized Losses	(34)	(40)
Total, Unrealized Losses	(44)	(184)
Residential MBS of U.S. Government Agencies and GSEs
Debt Securities, Available-for-sale [Line Items]
Estimated Fair Value	44,181	48,355
Less than 12 Months, Fair Value	64	227
12 Months or Longer, Fair Value	2,100	2,435
Total, Fair Value	2,164	2,662
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract] (Deprecated 2018-01-31)
12 Months or More, Fair Value	(8)	(10)
12 Months or More, Unrealized Losses	(34)	(40)
Total, Unrealized Losses	(42)	(50)
Corporate Bonds
Debt Securities, Available-for-sale [Line Items]
Estimated Fair Value	32,973	58,378
Less than 12 Months, Fair Value	6,453	11,779
12 Months or Longer, Fair Value	0	0
Total, Fair Value	6,453	11,779
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract] (Deprecated 2018-01-31)
12 Months or More, Fair Value	(2)	(134)
12 Months or More, Unrealized Losses	0	0
Total, Unrealized Losses	(2)	(134)
Collateral Pledged
Debt Securities, Available-for-sale [Line Items]
Estimated Fair Value	$ 86,804	$ 82,888

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for less than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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