Investment Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Jun. 30, 2019
Available-for-sale Securities
Available-for-sale Securities, Amortized cost	$ 541	$ 1,040
Available-for-sale Securities, Gross unrealized/ unrecognized gains	4	5
Available-for-sale Securities, Gross unrealized/ unrecognized losses
Available-for-sale Securities, Estimated fair value	545	1,045
Held-to-maturity Securities
Held-to-maturity Securities, Estimated fair value	659	775
U.S. Treasury securities [Member]
Available-for-sale Securities
Available-for-sale Securities, Amortized cost		496
Available-for-sale Securities, Gross unrealized/ unrecognized gains		1
Available-for-sale Securities, Gross unrealized/ unrecognized losses
Available-for-sale Securities, Estimated fair value		497
Agency mortgage-backed: residential [Member]
Available-for-sale Securities
Available-for-sale Securities, Amortized cost	41	43
Available-for-sale Securities, Gross unrealized/ unrecognized gains	1	1
Available-for-sale Securities, Gross unrealized/ unrecognized losses
Available-for-sale Securities, Estimated fair value	42	43
Held-to-maturity Securities
Held-to-maturity Securities, Amortized cost	652	775
Held-to-maturity Securities, Gross unrealized/ unrecognized gains	12	14
Held-to-maturity Securities, Gross unrealized/ unrecognized losses	5	14
Held-to-maturity Securities, Estimated fair value	659	775
Agency bonds [Member]
Available-for-sale Securities
Available-for-sale Securities, Amortized cost	500	501
Available-for-sale Securities, Gross unrealized/ unrecognized gains	3	4
Available-for-sale Securities, Gross unrealized/ unrecognized losses
Available-for-sale Securities, Estimated fair value	$ 503	$ 505

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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118939692&loc=d3e27161-111563

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=118942338&loc=SL82898722-210454

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Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

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-URI http://asc.fasb.org/extlink&oid=118939692&loc=d3e27161-111563

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Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

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