International Retirement Plan (Components Of Net Periodic Benefit Costs And Other Amounts Recognized In Other Comprehensive Income) (Details) (International Retirement Plan [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
International Retirement Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 150	$ 144
Interest cost	200	198
Amortization of actuarial loss	69	56
Total	419	398
Net loss	1,135	168
Total expense recognized in net periodic benefit cost and other comprehensive income	$ 1,554	$ 566