Operating Segment, Geographic Information and Significant Customers - Geographic Distribution of Revenues and Long Lived Assets from Continuing Operations (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues to unaffiliated customers									$ 408,588	$ 270,154	$ 234,847
Inter-geographic revenues									0	0	0
Net revenues	$ 115,608	$ 107,317	$ 98,014	$ 87,649	$ 85,430	$ 65,898	$ 60,417	$ 58,409	408,588	270,154	234,847
Identifiable long-lived assets	51,643				28,337				51,643	28,337	13,226
US
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues									341,699	220,253	189,596
Reportable Geographical Components | US
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues to unaffiliated customers									380,538	259,781	229,849
Inter-geographic revenues									7,637	7,911	2,806
Net revenues									388,175	267,692	232,655
Identifiable long-lived assets	50,340				28,187				50,340	28,187	13,127
Reportable Geographical Components | Europe
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues to unaffiliated customers									22,242	5,464	2,076
Inter-geographic revenues									44	447	475
Net revenues									22,286	5,911	2,551
Identifiable long-lived assets	1,288				127				1,288	127	68
Reportable Geographical Components | Asia Pacific
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues to unaffiliated customers									5,808	4,909	2,922
Inter-geographic revenues									0	0	0
Net revenues									5,808	4,909	2,922
Identifiable long-lived assets	15				23				15	23	31
Geography Eliminations
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues to unaffiliated customers									0	0	0
Inter-geographic revenues									(7,681)	(8,358)	(3,281)
Net revenues									(7,681)	(8,358)	(3,281)
Identifiable long-lived assets	$ 0				$ 0				$ 0	$ 0	$ 0