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Recent Accounting Pronouncements - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended
Jan. 01, 2018
Mar. 31, 2018
Mar. 31, 2017
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]      
Decrease in net cash used in investing activities   $ (45,822) $ (56,853)
ASU 2018-02 [Member]      
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]      
Tax Cuts and Jobs Act of 2017, reclassification from accumulated other comprehensive income to accumulated deficit $ 1,094    
ASU 2017-09 [Member]      
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]      
Decrease in net cash used in investing activities     950
Increased cash, cash equivalents and restricted cash     $ 950