Quarterly report pursuant to Section 13 or 15(d)

Property and Equipment - Components of Property and Equipment, Net (Detail)

v3.8.0.1
Property and Equipment - Components of Property and Equipment, Net (Detail) - USD ($)
$ in Thousands
Sep. 30, 2017
Dec. 31, 2016
Property Plant And Equipment [Line Items]    
Total, at cost $ 1,634,978 $ 1,464,795
Less accumulated depreciation (510,678) (450,184)
Subtotal 1,124,300 1,014,611
Less assets held for sale (3,489) (4,231)
Property and equipment, net 1,120,811 1,010,380
Land [Member]    
Property Plant And Equipment [Line Items]    
Total, at cost 351,367 306,457
Building and Improvements [Member]    
Property Plant And Equipment [Line Items]    
Total, at cost 869,382 777,766
Software and Computer Equipment [Member]    
Property Plant And Equipment [Line Items]    
Total, at cost 143,239 128,366
Parts and Service Equipment [Member]    
Property Plant And Equipment [Line Items]    
Total, at cost 104,483 93,901
Office Equipment and Fixtures [Member]    
Property Plant And Equipment [Line Items]    
Total, at cost 95,236 86,216
Company Vehicles [Member]    
Property Plant And Equipment [Line Items]    
Total, at cost 9,595 9,107
Construction in Progress [Member]    
Property Plant And Equipment [Line Items]    
Total, at cost $ 61,676 $ 62,982