Annual report pursuant to Section 13 and 15(d)

Long-Term Debt (Schedule Of Long-Term Debt) (Details)

v3.3.1.900
Long-Term Debt (Schedule Of Long-Term Debt) (Details) - USD ($)
$ in Thousands
Dec. 31, 2015
Jan. 27, 2015
Dec. 31, 2014
Apr. 24, 2012
Debt Instrument [Line Items]        
Total long-term debt $ 640,000   $ 228,126  
Less: current maturities (25,000)   (17,188)  
Long-term debt, net of current maturities 615,000   210,938  
Credit Agreement Terminated January 27, 2015 [Member]        
Debt Instrument [Line Items]        
Secured debt       $ 600,000
Credit Agreement 1.25B [Member]        
Debt Instrument [Line Items]        
Secured debt   $ 1,250,000    
Revolving Credit Facility [Member] | Credit Agreement Terminated January 27, 2015 [Member]        
Debt Instrument [Line Items]        
Secured debt 0   0  
Revolving Credit Facility [Member] | Credit Agreement 1.25B [Member]        
Debt Instrument [Line Items]        
Secured debt 140,000   0  
Long-term Debt [Member] | Credit Agreement Terminated January 27, 2015 [Member]        
Debt Instrument [Line Items]        
Secured debt 0 228,126 228,126 $ 250,000
Long-term Debt [Member] | Credit Agreement 1.25B [Member]        
Debt Instrument [Line Items]        
Secured debt $ 500,000 $ 500,000 $ 0