Stockholders' Equity (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Stockholders' Equity [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	578,000	693,000	614,000	695,000
Translation adjustment	$ (20,325)	$ (61,557)	$ (55,265)	$ (54,221)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, Net of Tax	$ (100)		$ (100)