Property and Equipment (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Property and Equipment [Line Items]
Land	$ 172,310	$ 162,923
Buildings and leasehold improvements	467,096	468,607
Furniture, fixtures, equipment and purchased software	296,214	274,723
Construction in progress	7,604	3,494
Property and equipment, at cost	943,224	909,747
Less accumulated depreciation and amortization	406,652	385,023
Property and equipment, net	$ 536,572	$ 524,724