Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended		9 Months Ended
	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017	Jun. 30, 2018	Dec. 31, 2017	Mar. 31, 2018	Mar. 31, 2017
Income Tax Contingency [Line Items]
Federal corporate income tax rate					35.00%
Non-Recurring income tax benefit		$ 3,700
Expected tax refund		$ 700
Income tax benefit	$ 7		$ (232)			$ (4,031)	$ (4,029)
Discrete tax benefit						(4,400)
Unrecognized tax benefits decrease as a result of the expiration of certain statutes	400
Valuation allowance against certain deferred tax assets	$ 39,600					$ 39,600
Switzerland [Member] | Intellinx Ltd [Member]
Income Tax Contingency [Line Items]
Discrete income tax benefit from impairment							$ (4,500)
Scenario, forecast [Member]
Income Tax Contingency [Line Items]
Federal corporate income tax rate				21.00%