XML 74 R59.htm IDEA: XBRL DOCUMENT v3.8.0.1
PROPERTY AND EQUIPMENT (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Property and equipment      
Property and equipment, gross $ 1,486,637 $ 1,402,735  
Less: accumulated depreciation (748,339) (685,159)  
Total property and equipment, net 738,298 717,576  
Capital lease depreciation expense 4,200 4,200 $ 3,900
Land and improvements      
Property and equipment      
Property and equipment, gross 77,487 73,124  
Real estate held for development and sale      
Property and equipment      
Property and equipment, gross 87,056 90,087  
Buildings and improvements      
Property and equipment      
Property and equipment, gross $ 260,470 239,603  
Buildings and improvements | Minimum      
Property and equipment      
Estimated useful lives 10 years    
Buildings and improvements | Maximum      
Property and equipment      
Estimated useful lives 30 years    
Station equipment      
Property and equipment      
Property and equipment, gross $ 779,779 702,004  
Station equipment | Minimum      
Property and equipment      
Estimated useful lives 5 years    
Station equipment | Maximum      
Property and equipment      
Estimated useful lives 10 years    
Office furniture and equipment      
Property and equipment      
Property and equipment, gross $ 109,632 101,252  
Office furniture and equipment | Minimum      
Property and equipment      
Estimated useful lives 5 years    
Office furniture and equipment | Maximum      
Property and equipment      
Estimated useful lives 10 years    
Leasehold improvements      
Property and equipment      
Property and equipment, gross $ 25,120 24,762  
Leasehold improvements | Minimum      
Property and equipment      
Estimated useful lives 10 years    
Leasehold improvements | Maximum      
Property and equipment      
Estimated useful lives 30 years    
Automotive equipment      
Property and equipment      
Property and equipment, gross $ 63,513 56,507  
Automotive equipment | Minimum      
Property and equipment      
Estimated useful lives 3 years    
Automotive equipment | Maximum      
Property and equipment      
Estimated useful lives 5 years    
Capital leased assets      
Property and equipment      
Property and equipment, gross $ 53,005 84,516  
Construction in progress      
Property and equipment      
Property and equipment, gross $ 30,575 $ 30,880