Summary of Significant Accounting Policies - Revision to Previously Issued Financial Statements (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended	9 Months Ended
	Sep. 30, 2018	Dec. 31, 2018	Mar. 31, 2020	Mar. 31, 2019
Changes in assets and liabilities:
Accounts receivable	$ (92,584)	$ (52,174)	$ (76,187)	$ (58,726)
Deferred revenue and other liabilities	27,491	12,853		18,089
As Previously Reported
Changes in assets and liabilities:
Accounts receivable	(107,930)	(64,116)		(65,147)
Deferred revenue and other liabilities	42,837	24,795		24,510
Out of period adjustment
Changes in assets and liabilities:
Accounts receivable	15,346	11,942		6,421
Deferred revenue and other liabilities	$ (15,346)	$ (11,942)		$ (6,421)