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Securities - Amortized Cost and Approximate Fair Value of Securities, Together with Gross Unrealized Gains and Losses of Securities (Detail) - USD ($) $ in Thousands	Sep. 30, 2021	Jun. 30, 2021
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 197,699	$ 186,589
Gross Unrealized Gains	4,110	4,639
Gross Unrealized Losses	(2,000)	(1,337)
Fair Value	199,809	189,891
US Treasury [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	991	990
Gross Unrealized Gains	4	6
Fair Value	995	996
U.S. Government and Federal Agency [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	7,519	7,522
Gross Unrealized Gains	472	517
Fair Value	7,991	8,039
Mortgage-backed Securities - GSE Residential [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	177,066	167,711
Gross Unrealized Gains	3,549	4,011
Gross Unrealized Losses	(1,853)	(1,307)
Fair Value	178,762	170,415
Small Business Administration [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	10,872	9,115
Gross Unrealized Gains	85	105
Gross Unrealized Losses	(147)	(30)
Fair Value	10,810	9,190
State and Political Subdivisions [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	1,251	1,251
Gross Unrealized Gains	0	0
Gross Unrealized Losses
Fair Value	$ 1,251	$ 1,251

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- Definition

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

+ References

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- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27161-111563

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- Definition

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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