Balance Sheet Details (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Prepaid expenses and other current assets
Prepaid expenses	$ 35,762	$ 35,667
Income tax receivable	18,947	7,194
Other current assets	14,739	12,788
Total	69,448	55,649
Accounts payable, accrued expenses and other
Accounts payable	17,728	14,078
Accrued expenses	52,461	45,676
Accrued interest payable	2,358	2,354
Accrued taxes payable	13,119	12,075
Other current liabilities	18,934	20,690
Total	$ 104,600	$ 94,873