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Credit Facilities and Long-Term Debt, Total Debt Outstanding (Details)
zł in Thousands, $ in Thousands
Dec. 31, 2018
USD ($)
Dec. 31, 2018
PLN (zł)
Dec. 31, 2017
USD ($)
Dec. 31, 2017
PLN (zł)
Credit Facilities and Long-Term Debt [Abstract]        
Revolving credit facilities $ 43,689   $ 57,000  
Other [1] 5,530   4,778  
Total debt 49,219   61,778  
Current maturities of debt 49,066   61,699  
Long-term debt 153   79  
HSBC Bank Polska S.A. [Member]        
Line of Credit Facility [Abstract]        
Overdraft facility $ 5,300 zł 19,900 $ 4,700 zł 16,200
[1] Other includes borrowings under our Polish overdraft facility of Zloty 19.9 million (approximately $5.3 million) and Zloty 16.2 million (approximately $4.7 million) as of December 31, 2018 and 2017, respectively.