Property and Equipment - Summary of Major Classes of Property and Equipment (Detail) - USD ($) $ in Thousands |
Dec. 31, 2015 |
Dec. 31, 2014 |
---|---|---|
Property, Plant and Equipment [Line Items] | ||
Property and Equipment, Gross | $ 510,712 | $ 496,225 |
Less accumulated depreciation | (322,319) | (305,928) |
Property and Equipment, Net | 188,393 | 190,297 |
Land, buildings and leasehold improvements [Member] | ||
Property, Plant and Equipment [Line Items] | ||
Property and Equipment, Gross | 187,405 | 185,940 |
Equipment [Member] | ||
Property, Plant and Equipment [Line Items] | ||
Property and Equipment, Gross | 257,119 | 240,227 |
Furniture and fixtures [Member] | ||
Property, Plant and Equipment [Line Items] | ||
Property and Equipment, Gross | 52,840 | 54,615 |
Motor vehicles [Member] | ||
Property, Plant and Equipment [Line Items] | ||
Property and Equipment, Gross | $ 13,348 | $ 15,443 |