Revenue Recognition - Accounts Receivable and Deferred Revenue (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	Jun. 30, 2019
Assets
Accounts receivable	$ 61,577	$ 53,351
Liabilities:
Deferred revenue, current portion	51,840	56,016
Deferred revenue, long-term portion	25,152	23,808
Total deferred revenues	76,992	79,824
Current accounts receivable	61,577	53,351
Other noncurrent assets	$ 12,093	$ 12,476
BGI
Liabilities:
Accounts receivable			$ 2,500