Recent Accounting Pronouncements - Schedule of Retained Earnings Adjustments (Detail) - USD ($) $ in Thousands	Jul. 01, 2018	Dec. 31, 2018	Jun. 30, 2018
Retained Earnings Adjustments [Line Items]
Decrease to accounts receivable	$ (72,391)	$ (62,902)
Increase to contract assets	(5,118)	(6,894)
Decrease to deferred revenue		58,496	$ 75,356
Total decrease to accumulated deficit		(175,801)	$ (207,115)
Difference between Revenue Guidance in Effect before and after Topic 606 [Member] \| Accounting Standards Update 2014-09 [Member]
Retained Earnings Adjustments [Line Items]
Decrease to accounts receivable	(1,914)
Increase to contract assets	5,118
Decrease to deferred revenue	9,839	2,071
Increase to capitalized fulfillment costs	11,648
Increase to capitalized sales commissions	4,952
Tax effects	(3,380)
Total decrease to accumulated deficit	$ 26,263	$ (34,934)

Capitalized sales commissions.

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Carrying amount as of the balance sheet date, net of allowance for doubtful accounts, of account and note receivables due from other than related parties.

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Amount, after accumulated amortization and accumulated impairment loss, of asset recognized from cost incurred to obtain or fulfill contract with customer.

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Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.

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

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Amount of the related income tax effect of a cumulative effect on retained earnings.

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The cumulative amount of the reporting entity's undistributed earnings or deficit.

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