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, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2013
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues to unaffiliated customers									$ 234,847	$ 208,729	$ 194,231
Inter-geographic revenues									0	0	0
Net revenues	$ 64,119	$ 59,578	$ 57,089	$ 54,061	$ 53,678	$ 53,393	$ 50,932	$ 50,726	234,847	208,729	194,231
Identifiable long-lived assets	13,226				14,144				13,226	14,144	14,462
Reportable Geographical Components [Member] | US
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues to unaffiliated customers									229,849	202,845	182,527
Inter-geographic revenues									2,806	3,479	8,734
Net revenues									232,655	206,324	191,261
Identifiable long-lived assets	13,127				14,090				13,127	14,090	14,429
Reportable Geographical Components [Member] | Europe
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues to unaffiliated customers									2,076	2,806	4,632
Inter-geographic revenues									475	1,550	385
Net revenues									2,551	4,356	5,017
Identifiable long-lived assets	68				48				68	48	33
Reportable Geographical Components [Member] | Asia Pacific
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues to unaffiliated customers									2,922	3,078	7,072
Inter-geographic revenues									0	140	147
Net revenues									2,922	3,218	7,219
Identifiable long-lived assets	31				6				31	6	0
Geography Eliminations [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues to unaffiliated customers									0	0	0
Inter-geographic revenues									(3,281)	(5,169)	(9,266)
Net revenues									(3,281)	(5,169)	(9,266)
Identifiable long-lived assets	$ 0				$ 0				$ 0	$ 0	$ 0