Description Of Business And Basis Of Presentation (Average Exchange Rates) (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Canadian Dollar (CAD) [Member]
Currency [Line Items]
Ending rates	1.3168		1.3168		1.2545
Average Rates	1.2912	1.3451	1.2778	1.3343
Average Rates % Change	4.00%		4.20%
Euros (EUR) [Member]
Currency [Line Items]
Ending rates	0.8573		0.8573		0.8334
Average Rates	0.8393	0.9096	0.8264	0.9240
Average Rates % Change	7.70%		10.60%
Polish Zloty (PLN) [Member]
Currency [Line Items]
Ending rates	3.7425		3.7425		3.4841
Average Rates	3.5769	3.8354	3.4881	3.9459
Average Rates % Change	6.70%		11.60%
British Pound (GBP) [Member]
Currency [Line Items]
Ending rates	0.7587		0.7587		0.7396
Average Rates	0.7353	0.7822	0.7270	0.7947
Average Rates % Change	6.00%		8.50%