Revenue, Performance Obligations, Deferred Revenue and Deferred Costs - Summary of Deferred Costs (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Jun. 30, 2019
Deferred Sales Commissions
Deferred Costs [Line Items]
Current	$ 2,151	$ 1,674
Non-current	3,877	3,069
Total	6,028	4,743
Deferred Service Costs
Deferred Costs [Line Items]
Current	683	755
Non-current	1,920	2,173
Total	$ 2,603	$ 2,928