Discontinued Operations (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016
Operating expenses:
Gain on sale of Content Delivery business, net	$ 22,609		$ 22,609	$ 0
Income (loss) from discontinued operations	22,728	$ 1,397	23,096	(50)
content delivery business Segment [Member]
Revenue	8,148	7,237	16,018	12,356
Cost of sales	3,122	2,982	6,342	5,634
Gross margin	5,026	4,255	9,676	6,722
Operating expenses:
Sales and marketing	2,091	2,722	4,235	5,723
Research and development	1,612	1,854	3,290	4,104
General and administrative	473	651	951	1,363
Total operating expenses	4,176	5,227	8,476	11,190
Operating income (loss)	850	(972)	1,200	(4,468)
Gain on sale of Content Delivery business, net	22,609	0	22,609	0
Other income (expense), net	(33)	120	(143)	205
Income from discontinued operations before income taxes	23,426	(852)	23,666	(4,263)
Provision for income taxes	698	(30)	570	(68)
Income (loss) from discontinued operations	$ 22,728	$ (822)	$ 23,096	$ (4,195)