Acquisition of C Technologies, Inc. (Fair Value of Net Assets Acquired) (Detail) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Business Acquisition [Line Items]
Goodwill	$ 468,382	$ 468,413
C Technologies
Business Acquisition [Line Items]
Cash and cash equivalents	3,795
Restricted cash	26,933
Accounts receivable	3,044
Inventory	3,783
Prepaid expenses and other current assets	93
Fixed assets	40
Operating lease right of use asset	3,836
Deferred taxes	895
Goodwill	142,314
Accounts payable	(436)
Accrued liabilities	(2,767)
Accrued bonus	(26,928)
Deferred revenue	(1,709)
Operating lease liability	(51)
Operating lease liability, long-term	(3,785)
Fair value of net assets acquired	239,887
C Technologies \| Customer relationships
Business Acquisition [Line Items]
Business combination, intangible assets	59,680
C Technologies \| Technology—developed
Business Acquisition [Line Items]
Business combination, intangible assets	28,920
C Technologies \| Trademark
Business Acquisition [Line Items]
Business combination, intangible assets	1,570
C Technologies \| Non-compete agreements
Business Acquisition [Line Items]
Business combination, intangible assets	$ 660

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