Segment Information - Net Revenue and Long-Lived Assets by Geographic Area (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018	Jun. 30, 2018
Net revenue:
Total net revenue	$ 116,225	$ 117,925	$ 333,190	$ 292,837
Property and equipment, net:
Total property and equipment, net	4,810		4,810		$ 4,211
Other intangible assets, net:
Total other intangible assets, net	27,432		27,432		8,573
United States [Member]
Net revenue:
Total net revenue	113,618	115,655	326,653	286,523
Property and equipment, net:
Total property and equipment, net	4,556		4,556		3,875
Other intangible assets, net:
Total other intangible assets, net	27,346		27,346		8,441
International [Member]
Net revenue:
Total net revenue	2,607	$ 2,270	6,537	$ 6,314
Property and equipment, net:
Total property and equipment, net	254		254		336
Other intangible assets, net:
Total other intangible assets, net	$ 86		$ 86		$ 132