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Commitments And Contingencies (Narrative) (Details) $ in Thousands, PLN in Millions	9 Months Ended
	Sep. 30, 2015 PLN	Sep. 30, 2015 USD ($)	Sep. 30, 2014 PLN	Sep. 30, 2014 USD ($)	Sep. 30, 2015 USD ($)	Dec. 31, 2014 USD ($)
Commitments and Contingencies [line items]
Contingent liability	PLN 12.0				$ 3,153	$ 3,560
Number of days to appeal	30 days	30 days
Review Of Tax Year 2011 [Member]
Commitments and Contingencies [line items]
Paid to Polish IRS	PLN 0.1	$ 100
Review Of Tax Period December 2007 To December 2008 [Member]
Commitments and Contingencies [line items]
Paid to Polish IRS	PLN 3.5	$ 1,200
Review Of Tax Year 2009 [Member]
Commitments and Contingencies [line items]
Paid to Polish IRS			PLN 2.8	$ 900