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Credit Facilities and Long-Term Debt, Total Debt Outstanding (Details)
$ in Thousands, zł in Millions
Mar. 31, 2019
USD ($)
Mar. 31, 2019
PLN (zł)
Dec. 31, 2018
USD ($)
Dec. 31, 2018
PLN (zł)
Credit Facilities and Long-Term Debt [Abstract]        
Revolving credit facilities $ 78,717   $ 43,689  
Other [1] 5,184   5,530  
Total debt 83,901   49,219  
Current maturities of debt 83,740   49,066  
Long-term debt 161   153  
HSBC Bank Polska S.A. [Member]        
Line of Credit Facility [Abstract]        
Overdraft facility $ 5,000 zł 19.0 $ 5,300 zł 19.9
[1] Other includes borrowings under our Polish overdraft facility of Zloty 19 million (approximately $5 million) and Zloty 19.9 million (approximately $5.3 million) as of March 31, 2019 and December 31, 2018, respectively.