Discontinued Operations - Components of Pension Expense (Detail) - Life Sciences and Engineering [Member] - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017
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	$ 14	$ 14	$ 28	$ 28
Expected return on assets	(9)	(9)	(18)	(18)
Amortization of prior service cost	19	31	39	62
Net pension expense	$ 24	$ 36	$ 49	$ 72