Revenue -Summary of Contract with Customer, Asset and Liability (Details) - USD ($) $ in Thousands		Sep. 30, 2019	Jun. 30, 2019
Contract Assets:
Unbilled accounts receivable - current	[1]	$ 7,643	$ 5,260
Interest receivable – current	[2]	584	361
Long Term Accounts Receivable	[2]	3,081	4,116
Interest receivable - non-current	[2]	1,079	1,255
Contract Liabilities:
Customer advances		18,413	20,395
Deferred revenue – current		79,596	78,332
Deferred revenue – non-current		$ 26,273	$ 26,639

[1] Included in accounts receivable on consolidated balance sheets

[2] Included in prepaid expenses and other current assets on consolidated balance sheets