Summary Of Significant Accounting Policies OCI PL Reclassification (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Retained earnings	$ 11,849	$ 16,362
Other comprehensive income	(4,513)	1,961	2,539
Accumulated Translation Adjustment [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Retained earnings	6,565	13,905
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	(7,340)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	0
Other comprehensive income	(7,340)
Accumulated Net Unrealized Investment Gain (Loss) [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Retained earnings	194	263
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	(109)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	(40)
Other comprehensive income	(69)
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Retained earnings	244	(110)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	439
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	85
Other comprehensive income	354
Net Investment Hedging [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Retained earnings	4,846	2,304
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	2,542
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	0
Other comprehensive income	2,542
Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Retained earnings	11,849	16,362
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	(4,468)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	45
Other comprehensive income	$ (4,513)