Goodwill and Intangible Assets, Net (Details 2) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014	Sep. 30, 2014
Changes in gross carrying amount of finite-lived intangible assets
Gross carrying amount	$ 59,472	$ 58,874	$ 66,256
Accumulated amortization	(30,902)	(26,287)	(31,474)
Net carrying amount	28,570	32,587	34,782
Estimated future amortization of intangible assets
Remaining three months of 2015	1,503
2016	5,662
2017	4,198
2018	3,308
2019	3,245
2020	3,215
Thereafter	5,281
Total	26,412
North America
Changes in gross carrying amount of finite-lived intangible assets
Gross carrying amount	29,402	29,455	34,490
Accumulated amortization	(17,143)	(14,719)	(18,941)
Net carrying amount	12,259	14,736	15,549
Europe
Changes in gross carrying amount of finite-lived intangible assets
Gross carrying amount	30,070	29,419	31,766
Accumulated amortization	(13,759)	(11,568)	(12,533)
Net carrying amount	$ 16,311	$ 17,851	$ 19,233