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Credit Facilities and Long-Term Debt, Polish Overdraft Facility (Details) - HSBC Bank Polska S.A. [Member]
zł in Millions, $ in Millions
6 Months Ended
Jun. 30, 2019
PLN (zł)
Jun. 30, 2019
USD ($)
Dec. 31, 2018
PLN (zł)
Dec. 31, 2018
USD ($)
Line of Credit Facility [Abstract]        
Maximum borrowing capacity     zł 30.0 $ 8.0
Overdraft facility zł 18.8 $ 5.0 zł 19.9 $ 5.3
1M WIBOR [Member]        
Line of Credit Facility [Abstract]        
Basis spread on variable rate 0.75%