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Acquisition of Outward, Inc. - Additional Information (Detail) - Outward Inc.
Dec. 01, 2017
USD ($)
Business Acquisition [Line Items]  
Contractual purchase price $ 112,000,000
Purchase consideration 80,812,000
Consideration owed to former owners of an acquired business, contingent upon continued future service $ 26,690,000
Acquisition payment period 4 years
Cash paid to settle pre-existing obligations as part of a business combination, excluded from consideration transferred $ 4,498,000
Consideration owed to certain key employees of an acquired business, contingent upon continued future service and certain financial targets $ 20,000,000
3-D Imaging Data and Intellectual Property  
Business Acquisition [Line Items]  
Finite lived intangible asset useful life 4 years