Operating Segments and Geographic Information (Information Related to Reportable Operating Business Segments) (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Segment Reporting Information [Line Items]
Revenues		$ 274,088	$ 302,401	$ 881,952	$ 991,750
Income from operations		(20,730)	1,113	(6,743)	59,846
Foreign currency transaction loss, net		(2,908)	(1,290)	(2,631)	(4,278)
Interest income		268	424	752	1,304
Interest expense		(171)	(366)	(650)	(685)
Other income (expense), net		405	217	(6)	388
Income (loss) before income taxes		(23,136)	98	(9,278)	56,575
Depreciation and amortization		8,912	10,593	28,019	31,344
Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenues		273,670	301,966	880,982	991,143
Income from operations		15,746	38,258	125,836	178,088
Depreciation and amortization		3,278	6,127	10,989	17,206
Intersegment eliminations [Member]
Segment Reporting Information [Line Items]
Income from operations			15		45
Unallocated corporate and other [Member]
Segment Reporting Information [Line Items]
Income from operations	[1]	(29,927)	(31,755)	(113,736)	(104,537)
Depreciation and amortization	[1]	3,765	2,609	11,111	8,547
Americas [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenues		124,669	127,475	373,557	386,163
Income from operations		11,734	15,094	48,884	53,451
Depreciation and amortization		1,825	3,439	5,749	9,126
Asia Pacific [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenues		98,879	113,846	348,211	407,442
Income from operations		178	13,475	58,775	95,383
Depreciation and amortization		1,010	1,677	3,351	5,255
Europe [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenues		50,122	60,645	159,214	197,538
Income from operations		3,834	9,689	18,177	29,254
Depreciation and amortization		443	1,011	1,889	2,825
Other businesses [Member]
Segment Reporting Information [Line Items]
Revenues		418	435	970	607
Income from operations		(6,549)	(5,405)	(18,843)	(13,750)
Depreciation and amortization		$ 1,869	$ 1,857	$ 5,919	$ 5,591

[1] Includes a corporate component consisting primarily of corporate support and administrative functions, costs associated with share-based compensation, research and development, brand marketing, legal, restructuring, depreciation and amortization of corporate and other assets not allocated to operating segments.