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Long-Term Debt (Details) - Revolving Credit Facility Tranche [Domain] - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2015
Dec. 31, 2014
Sep. 30, 2014
Debt Instrument [Line Items]      
Lease Expiration Date Jun. 01, 2034    
Net carrying amount of liability component $ 1,118,294 $ 1,081,467  
Long-term Debt and Capital Lease Obligations, Current 76,442 72,630  
LONG-TERM DEBT, net of current maturities 1,041,852 1,008,837  
5.00% Senior Note [Member]      
Debt Instrument [Line Items]      
Long-term Debt Underwriters Fees and Discount Original     $ 10,400
Secured Long-term Debt, Noncurrent 540,666 540,100  
Mortgages [Member]      
Debt Instrument [Line Items]      
Other Real Estate Related and Long-Term Debt 56,333 58,003  
Real Estate Credit Facility [Member]      
Debt Instrument [Line Items]      
Long-term Debt and Capital Lease Obligations, Current 30,900    
Other Real Estate Related Long-Term Debt [Member]      
Debt Instrument [Line Items]      
Other Real Estate Related and Long-Term Debt 376,670 358,271  
Capital Lease Obligations [Member]      
Debt Instrument [Line Items]      
Capital lease obligations related to real estate, maturing in varying amounts through June 2034 with a weighted average interest rate of 9.6% 53,904 $ 55,380  
Third Party Financial Institution [Member]      
Debt Instrument [Line Items]      
Long-term Debt and Capital Lease Obligations, Current 6,100    
Foreign Note [Member]      
Debt Instrument [Line Items]      
Long-term Debt and Capital Lease Obligations, Current 4,800    
Ford Motor Credit Company [Member] | Third Party Financial Institution [Member]      
Debt Instrument [Line Items]      
Long-term Debt and Capital Lease Obligations, Current 1,500    
Bmw Financial Services [Member] | Real Estate Related Debt [Member]      
Debt Instrument [Line Items]      
Long-term Debt and Capital Lease Obligations, Current 4,600    
Mercedes Benz Financial Services [Member] | Real Estate Related Debt [Member]      
Debt Instrument [Line Items]      
Long-term Debt and Capital Lease Obligations, Current 1,200    
Toyota Motor Credit Corporation [Member] | Real Estate Related Debt [Member]      
Debt Instrument [Line Items]      
Long-term Debt and Capital Lease Obligations, Current $ 5,100