Discontinued Operations - Components of Pension Expense (Detail) - Life Sciences and Engineering [Member] - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017
Defined Benefit Plan Disclosure [Line Items]
Interest Cost	$ 14	$ 13	$ 42	$ 39
Expected return on assets	(9)	(8)	(27)	(24)
Amortization of prior service cost	31	32	93	97
Net pension expense	$ 36	$ 37	$ 108	$ 112