XML 147 R134.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Derivative Financial Instruments (Narrative) (Details)
3 Months Ended 12 Months Ended
Nov. 28, 2018
USD ($)
Swap
Nov. 13, 2016
Dec. 31, 2018
USD ($)
Dec. 31, 2019
USD ($)
item
Sep. 30, 2019
USD ($)
Derivative [Line Items]          
Loss in AOCI expected to be recognized in earnings over the next twelve months       $ (2,600,000)  
Not Designated As Hedging Instrument [Member]          
Derivative [Line Items]          
Derivative assets     $ 0 0  
Derivative liabilities     0 $ 0  
Commodity Price Risk [Member] | Open Natural Gas Contracts          
Derivative [Line Items]          
Number of Contract Designated Hedges | item       0  
Currency Rate Risk – Sales and Purchases | Foreign Exchange          
Derivative [Line Items]          
Number of Contract Designated Hedges | item       0  
Interest Rate Swap Contracts [Member]          
Derivative [Line Items]          
Notional interest rate swap         $ 100,000,000.0
Notional interest rate swap settled         $ 100,000,000.0
Interest Rate Swap Contracts [Member] | Term Loan A Swaps [Member]          
Derivative [Line Items]          
Notional interest rate swap $ 200,000,000.0        
Number of interest rate swaps | Swap 2        
Loss in other operating expense (income) due to fair value changes     $ 4,600,000    
LIBOR floor 0.00%        
Interest Rate Swap Contracts [Member] | Term Loan A Swaps [Member] | Forward Starting Swap [Member]          
Derivative [Line Items]          
Notional interest rate swap $ 100,000,000.0        
LIBOR floor 0.00%        
Interest Rate Swap Mature 2021 [Member]          
Derivative [Line Items]          
Derivatives swap maturity year   2021      
Interest Rate Swap Mature 2023 [Member]          
Derivative [Line Items]          
Derivatives swap maturity year 2023        
Interest Rate Swap Mature 2025 [Member]          
Derivative [Line Items]          
Derivatives swap maturity year 2025