Quarterly report pursuant to Section 13 or 15(d)

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

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Property and Equipment - Components of Property and Equipment, Net (Detail) - USD ($)
$ in Thousands
Mar. 31, 2016
Dec. 31, 2015
Property Plant And Equipment [Line Items]    
Total, at cost $ 1,305,857 $ 1,266,590
Less accumulated depreciation (397,681) (379,688)
Property and equipment, net 908,176 886,902
Land [Member]    
Property Plant And Equipment [Line Items]    
Total, at cost 264,904 260,275
Building and Improvements [Member]    
Property Plant And Equipment [Line Items]    
Total, at cost 692,545 679,712
Software and Computer Equipment [Member]    
Property Plant And Equipment [Line Items]    
Total, at cost 111,763 107,086
Parts and Service Equipment [Member]    
Property Plant And Equipment [Line Items]    
Total, at cost 81,108 79,219
Office Equipment and Fixtures [Member]    
Property Plant And Equipment [Line Items]    
Total, at cost 80,020 76,810
Company Vehicles [Member]    
Property Plant And Equipment [Line Items]    
Total, at cost 8,916 8,478
Construction in Progress [Member]    
Property Plant And Equipment [Line Items]    
Total, at cost $ 66,601 $ 55,010