Goodwill and Intangible Assets - Schedule of Estimated Future Amortization Expense of Acquired Intangible Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Jun. 30, 2018
Estimated future amortization expense of purchased intangible assets
2019 (remaining 6 months)	$ 72
2020	143
2021	143
2022	143
2023	143
Thereafter	106
Net Amount	$ 750	$ 821