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Long-term Debt - Narrative (Details)
3 Months Ended
Dec. 19, 2012
USD ($)
quarter
Mar. 31, 2016
USD ($)
Dec. 31, 2015
USD ($)
Oct. 04, 2013
USD ($)
Sep. 30, 2010
USD ($)
Credit Agreement          
Line of Credit Facility [Line Items]          
Maximum consolidated total leverage ratio, quarter ending December 31, 2013 requirement 4.75        
Maximum consolidated total leverage ratio, quarter ending March 31, 2014 requirement 4.00        
Maximum consolidated total leverage ratio, quarter ending June 30, 2014 requirement 3.75        
Maximum consolidated total leverage ratio, quarter ending September 30, 2014 requirement 3.50        
Maximum consolidated total leverage ratio, quarter ending December 31, 2014 requirement 3.25        
Maximum consolidated total leverage ratio, any fiscal quarter, 2015 requirement 3        
Line Of Credit Facility Covenant Terms Consolidated Total Leverage Ratio Thereafter Maximum 3.25        
Number of consecutive quarters for EBITDA to fixed charges ratio covenants | quarter 4        
Minimum consolidated EBITDA to fixed charges ratio 1.75        
Maximum consolidated net income $ 0        
Maximum facility capital expenditures in the next 12 months $ 30,000,000        
Amount outstanding on line of credit   $ 228,400,000      
Remaining borrowing capacity on line of credit   $ 49,600,000      
Fixed interest rate percent   2.4825% 2.4825%    
Debt subject to fixed interest rate   $ 133,700,000 $ 135,000,000    
Base Rate | Credit Agreement          
Line of Credit Facility [Line Items]          
Spread on variable rate loans 1.00% 0.25%      
Minimum consolidated total leverage ratio   2.25      
London Interbank Offered Rate (LIBOR) Market Index Rate | Credit Agreement          
Line of Credit Facility [Line Items]          
Spread on variable rate loans 2.00% 1.25%      
Minimum consolidated total leverage ratio   2.25      
London Interbank Offered Rate (LIBOR) | Credit Agreement          
Line of Credit Facility [Line Items]          
Spread on variable rate loans 2.00% 1.25%      
Calculation of base rate   1.00%      
Minimum consolidated total leverage ratio   2.25      
Federal Funds Rate | Credit Agreement          
Line of Credit Facility [Line Items]          
Calculation of base rate   0.50%      
Variable Rate 1 | Credit Agreement          
Line of Credit Facility [Line Items]          
Variable interest rate percent   1.94% 1.74%    
Debt subject to variable interest rate   $ 90,100,000 $ 65,800,000    
Variable Rate 2 | Credit Agreement          
Line of Credit Facility [Line Items]          
Variable interest rate percent   2.13% 2.12%    
Debt subject to variable interest rate   $ 4,600,000 $ 6,800,000    
Revolving Credit Facility | Credit Agreement          
Line of Credit Facility [Line Items]          
Maximum borrowing capacity       $ 225,000,000  
Revolving Credit Facility | Wells Fargo          
Line of Credit Facility [Line Items]          
Maximum borrowing capacity         $ 175,000,000
Term Loan | Credit Agreement          
Line of Credit Facility [Line Items]          
Maximum borrowing capacity $ 100,000,000        
Bridge Loan | Base Rate | Credit Agreement          
Line of Credit Facility [Line Items]          
Minimum consolidated total leverage ratio   2.25      
Bridge Loan | London Interbank Offered Rate (LIBOR) Market Index Rate | Credit Agreement          
Line of Credit Facility [Line Items]          
Spread on variable rate loans 2.00% 1.25%