Discontinued Operations - Components of Pension Expense (Detail) - Life Sciences and Engineering [Member] - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Type [Extensible List]	us-gaap:PensionPlansDefinedBenefitMember	us-gaap:PensionPlansDefinedBenefitMember	us-gaap:PensionPlansDefinedBenefitMember	us-gaap:PensionPlansDefinedBenefitMember
Interest Cost	$ 10	$ 10	$ 20	$ 24
Expected return on assets	(9)	(8)	(18)	(17)
Amortization of prior service cost	19	41	38	61
Net pension expense	$ 20	$ 43	$ 40	$ 68