Condensed Financial Information (Parent Company Only) - Condensed Statement of Cash Flows (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Cash flows from operating activities
Net income	$ 1,738	$ 3,919
Items not requiring (providing) cash
Deferred income tax	1,324	(332)
Net change in other liabilities	786	458
Net cash provided by operating activities	4,838	6,144
Cash flows from financing activities
Stock purchase per stock repurchase plan	(1,380)	(1,375)
Dividends paid	(730)	(589)
Net cash provided by (used in) financing activities	52,818	(12,413)
Increase (Decrease) in Cash and Cash Equivalents	(3,012)	1,317
Cash and Cash Equivalents at Beginning of Year	7,766	6,449
Cash and Cash Equivalents at End of Year	4,754	7,766
Parent Company [Member]
Cash flows from operating activities
Net income	1,738	3,919
Items not requiring (providing) cash
Deferred income tax	(39)	273
Net change in other liabilities	87	9
Earnings from subsidiary	(1,775)	(3,954)
Net cash provided by operating activities	11	247
Cash flows from financing activities
Stock purchase per stock repurchase plan	(1,380)	(1,375)
Dividends paid	(784)	(635)
Loan for ESOP	157	161
Net cash provided by (used in) financing activities	(2,007)	(1,849)
Increase (Decrease) in Cash and Cash Equivalents	(1,996)	(1,602)
Cash and Cash Equivalents at Beginning of Year	11,056	12,658
Cash and Cash Equivalents at End of Year	$ 9,060	$ 11,056