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Basis of Presentation (Narrative) (Details) - PST Eletronicaltda [Member]
64 Months Ended 65 Months Ended
May 15, 2017
May 15, 2017
May 16, 2017
Schedule of Equity Method Investments [Line Items]      
Percentage ownership in consolidated subsidiary 74.00% 74.00%  
Percentage of additional noncontrolling interest acquired     26.00%