Property and Equipment (Asset Impairments) (Details) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2015 USD ($)	Dec. 31, 2016 USD ($) stores	Dec. 31, 2015 USD ($) stores	Dec. 31, 2014 USD ($) stores
Segment Reporting Information [Line Items]
Impairment of Long-Lived Assets Held-for-use		$ 2,713	$ 15,271	$ 8,827
Number of retail stores impaired | stores		42	84	77
South Africa [Member]
Segment Reporting Information [Line Items]
Impairment of Long-Lived Assets to be Disposed of	$ 5,700		$ 5,700
Americas [Member]
Segment Reporting Information [Line Items]
Impairment of Long-Lived Assets Held-for-use		$ 1,703	$ 7,237	$ 4,001
Number of retail stores impaired | stores		12	27	36
Asia Pacific [Member]
Segment Reporting Information [Line Items]
Impairment of Long-Lived Assets Held-for-use		$ 672	$ 6,450	$ 2,807
Number of retail stores impaired | stores		21	36	14
Europe [Member]
Segment Reporting Information [Line Items]
Impairment of Long-Lived Assets Held-for-use		$ 338	$ 1,584	$ 2,019
Number of retail stores impaired | stores		9	21	27
Underperforming Retail Stores [Member]
Segment Reporting Information [Line Items]
Impairment of Long-Lived Assets Held-for-use		$ 2,700	$ 9,600	$ 8,800