Commitments and Contingencies - Other Commitments (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Other Commitments [Line Items]
Rental expense net of rental income	$ 1,000	$ 1,900	$ 1,400
Commitment for minimum payments under leases	4,207
Contractual obligations and commitments
Future payments for non-cancellable contractual agreements in next fiscal year	860
Future payments for non-cancellable contractual agreements in second fiscal year	1,500
Future payments for non-cancellable contractual agreements in third fiscal year	$ 1,400
Employee benefit plans
Employee contribution from salary	60.00%
Employer contributions to 401(k) plan	$ 376	446	391
Defined contribution plans' expenses	$ 385	636	1,100
Severance plan expenses - Italy office		0
Warranty
Warranty period, maximum	1 year
Co-location Services
Other Commitments [Line Items]
Rental expense net of rental income	$ 888	$ 1,100	$ 1,200
Commitment for minimum payments under leases	$ 121