Acquisition - Additional Information (Detail) - CaseStack, Inc. [Member] - USD ($) $ in Thousands		1 Months Ended		3 Months Ended	6 Months Ended
	Dec. 03, 2018	Apr. 30, 2019	Dec. 31, 2018	Jun. 30, 2019	Jun. 30, 2019
Business Acquisition [Line Items]
Consideration for transaction	$ 252,858
Business acquisition, cash paid	249,389	$ 700	$ 248,700
Deferred purchase consideration	$ 3,469
Deferred purchase consideration payable term	24 months
Amortization expense of intangible assets				$ 4,600	$ 2,300
Intangible assets, weighted average useful life					9 years