Operating Segments and Geographic Information (Information Related To Reportable Operating Business Segments) (Details) - USD ($)
 3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Segment Reporting Information [Line Items]        
Total consolidated revenues $ 245,888,000 $ 274,088,000 $ 848,856,000 $ 881,952,000
Income (loss) from operations (1,215,000) (20,730,000) 33,633,000 (6,743,000)
Foreign currency transaction gain (loss), net 1,379,000 (2,908,000) (1,568,000) (2,631,000)
Interest income 178,000 268,000 558,000 752,000
Interest expense (184,000) (171,000) (661,000) (650,000)
Other income (expense), net (1,000) 405,000 (108,000) (6,000)
Income (loss) before income taxes 157,000 (23,136,000) 31,854,000 (9,278,000)
Depreciation and amortization 8,442,000 8,912,000 25,473,000 28,019,000
Bad debt expense     1,805,000 25,258,000
(Decrease) increase in operating loss from prior year     (21,300,000)  
Americas [Member]        
Segment Reporting Information [Line Items]        
Decrease in restructuring charges from prior year 0 100,000 0 500,000
Asia Pacific [Member]        
Segment Reporting Information [Line Items]        
Decrease in restructuring charges from prior year 0 100,000 0 3,100,000
Europe [Member]        
Segment Reporting Information [Line Items]        
Decrease in restructuring charges from prior year 0 800,000 0 2,400,000
Other businesses [Member]        
Segment Reporting Information [Line Items]        
Total consolidated revenues 271,000 418,000 667,000 970,000
Income (loss) from operations (7,179,000) (6,549,000) (19,291,000) (18,843,000)
Depreciation and amortization 1,614,000 1,869,000 5,060,000 5,919,000
Reportable Operating Segments [Member]        
Segment Reporting Information [Line Items]        
Total consolidated revenues 245,617,000 273,670,000 848,189,000 880,982,000
Income (loss) from operations 35,383,000 15,746,000 [1] 145,318,000 125,836,000 [1]
Depreciation and amortization 2,772,000 3,278,000 9,322,000 10,989,000
Reportable Operating Segments [Member] | Americas [Member]        
Segment Reporting Information [Line Items]        
Total consolidated revenues 114,659,000 124,669,000 373,886,000 373,557,000
Income (loss) from operations 16,329,000 11,734,000 [1] 50,919,000 48,884,000 [1]
Depreciation and amortization 1,417,000 1,825,000 4,400,000 5,749,000
Reportable Operating Segments [Member] | Asia Pacific [Member]        
Segment Reporting Information [Line Items]        
Total consolidated revenues 90,920,000 [2] 98,879,000 326,268,000 [2] 348,211,000
Income (loss) from operations 17,303,000 178,000 [1] 77,687,000 58,775,000 [1]
Depreciation and amortization 1,036,000 1,010,000 3,107,000 3,351,000
Reportable Operating Segments [Member] | Europe [Member]        
Segment Reporting Information [Line Items]        
Total consolidated revenues 40,038,000 50,122,000 148,035,000 159,214,000
Income (loss) from operations 1,751,000 3,834,000 [1] 16,712,000 18,177,000 [1]
Depreciation and amortization 319,000 443,000 1,815,000 1,889,000
Unallocated corporate and other [Member]        
Segment Reporting Information [Line Items]        
Income (loss) from operations (29,419,000) [3] (29,927,000) (92,394,000) [3] (113,736,000)
Depreciation and amortization 4,056,000 3,765,000 11,091,000 11,111,000
Employee Wages [Member]        
Segment Reporting Information [Line Items]        
(Decrease) increase in operating loss from prior year     (5,800,000)  
Other Restructuring [Member]        
Segment Reporting Information [Line Items]        
(Decrease) increase in operating loss from prior year     (5,700,000)  
Employee Travel Expenses [Member]        
Segment Reporting Information [Line Items]        
(Decrease) increase in operating loss from prior year     (1,900,000)  
Rent Related Expenses [Member]        
Segment Reporting Information [Line Items]        
(Decrease) increase in operating loss from prior year     (1,100,000)  
SOUTH AFRICA        
Segment Reporting Information [Line Items]        
Total consolidated revenues [2] $ 0 2,600,000 $ 1,700,000 8,400,000
CHINA        
Segment Reporting Information [Line Items]        
Bad debt expense   $ 18,900,000   $ 22,900,000
[1] for the three months ended September 30, 2015 was negatively impacted by restructuring charges of $0.1 million, $0.1 million, and $0.8 million for the Americas, Asia Pacific, and Europe segments, respectively. Income (loss) from operations for the nine months ended September 30, 2015 was negatively impacted by restructuring charges of $0.5 million, $3.1 million, and $2.4 million for the Americas, Asia Pacific, and Europe segments, respectively. The Company completed its restructuring efforts in 2015 and had no similar expenses in the 2016 periods presented.
[2] The Company disposed of its South Africa operations on April 15, 2016. Revenues for the three and three months ended September 30, 2016 and 2015 included zero and $2.6 million from the Company’s South Africa operations, respectively. Revenues for the nine months ended September 30, 2016 and 2015 included $1.7 million and $8.4 million from the Company’s South Africa operations, respectively.
[3] Unallocated corporate and other 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, and costs of the same nature related to certain corporate holding companies. During the nine months ended September 30, 2016 and 2015, unallocated corporate and other operating loss was $92.4 million and $113.7 million, respectively, resulting in a $21.3 million decrease that is primarily associated with: (i) a $5.8 million decrease in employee wages, (ii) a $5.7 million decrease associated with nonrecurring disbursements made to invalid vendors, (iii) a $1.9 million decrease associated with employee travel expenses, and (iv) a $1.1 million decrease in rent related expenses. No other items were individually significant.