Employee Benefits - Summary Information for Plans (Comprised Solely of One Domestic Plan) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Change in Benefit Obligation:
Benefit obligation at beginning of year	$ 1,390	$ 1,420
Interest cost	47	56
Actuarial loss	168	90
Benefits paid	(31)	(176)
Benefit obligation end of year	1,574	1,390
Change in Fair Value of Plan Assets:
Beginning fair value	827	895
Actual return (loss) on plan assets	(5)	1
Contribution by employer	132	107
Benefits paid	(31)	(176)
Plan assets at end of year	923	827
Funded status of the plans	(651)	(563)
Unrecognized actuarial loss	469	384
Accrued benefit cost	(182)	(179)
Amounts Recognized in Consolidated Balance Sheets
Accrued benefit cost	(182)	(179)
Accumulated other comprehensive loss	469	384
Net amount recognized	$ (651)	$ (563)