Quarterly Financial Information Quarterly Financial Information Narrative (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Jun. 30, 2018
Non-current deferred revenues	$ 54,554	$ 40,984
Deferred revenues	$ 339,752	328,931
Restatement Adjustment [Member]
Non-current deferred revenues		23,500
Deferred revenues		$ (23,500)

Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as noncurrent.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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