Discontinued Operations - Components of Pension Expense (Detail) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Dec. 31, 2022	Sep. 30, 2022	Dec. 31, 2021	Sep. 30, 2021	Dec. 31, 2022	Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Type [Extensible List]	us-gaap:PensionPlansDefinedBenefitMember		us-gaap:PensionPlansDefinedBenefitMember		us-gaap:PensionPlansDefinedBenefitMember	us-gaap:PensionPlansDefinedBenefitMember
Life Sciences and Engineering [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Type [Extensible List]		us-gaap:PensionPlansDefinedBenefitMember		us-gaap:PensionPlansDefinedBenefitMember
Interest Cost	$ 13		$ 10		$ 26	$ 21
Expected return on assets	(10)		(11)		(21)	(22)
Amortization of prior service cost	0		12		0	23
Net pension expense	$ 3		$ 11		$ 5	$ 22