Discontinued Operations - Components of Pension Expense (Detail) - Life Sciences and Engineering [Member] - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Defined Benefit Plan Disclosure [Line Items]
Interest Cost	$ 14	$ 14
Expected return on assets	(9)	(9)
Amortization of prior service cost	20	31
Net pension expense	$ 25	$ 36