Goodwill - Goodwill, Net (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Dec. 31, 2018	Jun. 30, 2018
Goodwill:
Goodwill, net, ending balance	$ 74,802
Subscription and software
Goodwill:
Goodwill, gross, beginning balance	142,316
Accumulated impairment losses, beginning balance	(65,569)
Goodwill, net, beginning balance	75,590
Effect of currency translation	(1,945)
Goodwill, gross, ending balance	142,316	$ 142,316
Accumulated impairment losses, ending balance	(65,569)	(65,569)
Goodwill, net, ending balance	74,802	75,590
Goodwill Foreign Currency Translation Gain Loss [Member] | Subscription and software
Goodwill:
Effect of currency translation	$ (788)	$ (1,157)