v3.20.1
Long-term debt (Details)
$ in Millions
1 Months Ended 3 Months Ended
Mar. 18, 2020
USD ($)
Jan. 31, 2020
USD ($)
Mar. 31, 2020
USD ($)
Mar. 31, 2020
CAD ($)
Mar. 31, 2020
USD ($)
Mar. 17, 2020
USD ($)
Jan. 31, 2020
CAD ($)
Dec. 31, 2019
USD ($)
Long-term debt                
Less: unamortized discount         $ (5,200,000)     $ (5,800,000)
Less: unamortized deferred financing costs         (5,200,000)     (4,700,000)
Less: current maturities         (78,500,000)     (76,400,000)
Total long-term debt         436,300,000     473,500,000
Current maturities         (78,500,000)     (76,400,000)
Term loan maturity   2 years            
Payments of Financing Costs     $ 1,500,000          
Senior secured term loans | APLP Holdings                
Long-term debt                
Minimum percentage of variable rate base   1.00%            
Applicable margin (as a percent)   2.50%            
Write-off of deferred financing costs   $ 500,000            
Debt repriced             $ 380.0  
Interest rate margin reduction due to repricing, as a percent   0.25%            
Interest rate margin additional reduction due to repricing, as a percent   0.25%            
Payments of Financing Costs   $ 600,000            
Senior unsecured notes, due June 2036                
Long-term debt                
Long-term Debt, Gross       $ 210.0        
Cadillac term loan, due 2025                
Long-term debt                
Debt service coverage ratio     1.20%          
Debt service coverage ratio, consecutive term     4          
Debt service coverage projected ratio     1.20%          
Debt service coverage projected ratio, consecutive term     4          
Revolver | APLP Holdings                
Long-term debt                
Line of Credit Facility, Amount Outstanding         0      
Borrowing capacity $ 180,000,000         $ 200,000,000    
Payments of Financing Costs 900,000              
Letters of credit | APLP Holdings                
Long-term debt                
Line of Credit Facility, Amount Outstanding         78,100,000      
Maximum | Senior secured term loans | APLP Holdings                
Long-term debt                
Leverage ratio as defined in Credit Agreement             2.75  
Maximum | Revolver | APLP Holdings                
Long-term debt                
Borrowing capacity 210,000,000              
Upsizing borrowing capacity $ 30,000,000              
London Interbank Offered Rate (LIBOR) | Senior secured term loan facility, due 2025                
Long-term debt                
Minimum percentage of variable rate base     1.00%          
Long-term debt excluding debentures | Senior secured term loan facility, due 2025                
Long-term debt                
Long-term Debt, Gross         360,000,000     380,000,000
Current maturities         (75,500,000)     (72,500,000)
Long-term debt excluding debentures | Senior unsecured notes, due June 2036                
Long-term debt                
Long-term Debt, Gross         $ 148,000,000     161,700,000
Interest rate (as a percent)       5.95% 5.95%      
Long-term debt excluding debentures | Cadillac term loan, due 2025                
Long-term debt                
Long-term Debt, Gross         $ 17,200,000     18,700,000
Current maturities         $ (3,000,000)     $ (3,900,000)
Long-term debt excluding debentures | London Interbank Offered Rate (LIBOR) | Senior secured term loan facility, due 2025                
Long-term debt                
Applicable margin (as a percent)     2.50%          
Long-term debt excluding debentures | London Interbank Offered Rate (LIBOR) | Cadillac term loan, due 2025                
Long-term debt                
Applicable margin (as a percent)     1.61%