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Changes in Accumulated Other Comprehensive Income (Loss) (AOCI) by Component - Amounts Reclassified from Accumulated Other Comprehensive Income (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Realized gains (losses) on available-for-sale securities	$ 12	$ 0	$ (171)	$ 0
Tax expense	202	402	1,428	1,694
Net Income	690	1,154	4,063	4,749
Amounts Reclassified from AOCI [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total reclassified amount before tax	10	(14)	(176)	(35)
Tax expense	4	(4)	(49)	(10)
Net Income	6	(10)	(127)	(25)
Accumulated Net Realized Investment Gains (Losses) [Member] | Amounts Reclassified from AOCI [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Realized gains (losses) on available-for-sale securities	12	0	(171)	0
Amortization of Defined Benefit Pension Items [Member] | Amounts Reclassified from AOCI [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Actuarial losses	$ (2)	$ (14)	$ (5)	$ (35)

X

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Amount of realized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), excluding other-than-temporary impairment (OTTI).

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Amount after tax of income (loss) from continuing operations including portion attributable to the noncontrolling interest.

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