Commitments and Contingencies - Additional Information (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Jan. 14, 2008
Commitments And Contingencies Disclosure [Abstract]
Adverse effect on earnings per share resulting from changing sales forecasts					$ 1.00
Gains or losses relating to contingency	$ 0	$ 0	$ 3,900	$ 3,900
Costs relating to delayed delivery of a product			$ 900	$ 900