Other Intangible assets, net (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Other Intangible assets, net
Accumulated amortization	$ (20,181)	$ (6,372)
Intangible assets, net	106,222	122,631
Amortization expense	16,812	4,024	260
Expected future amortization of intangible assets
2014	15,171
2015	15,137
2016	14,569
2017	7,196
2018	5,306
2019 and Thereafter	48,844
Intangible assets, net	106,222	122,631
Covenant not to compete
Other Intangible assets, net
Intangible assets	933	3,533
Estimated useful life	1 year
Trade names and trademarks
Other Intangible assets, net
Intangible assets	9,820	9,820
Estimated useful life	4 years
Proprietary know how
Other Intangible assets, net
Intangible assets	34,650	34,650
Estimated useful life	4 years 6 months
Management contract rights
Other Intangible assets, net
Intangible assets	$ 81,000	$ 81,000
Estimated useful life	16 years