Goodwill and Intangible Assets (Details 3) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Changes in other amortizable intangible assets
Amortization	$ (5,000)	$ (200)	$ (200)
Net balance at the end of the period	33,910
Future estimated amortization expense
2014	6,547
2015	6,547
2016	6,547
2017	6,374
2018	6,316
2019 and thereafter	1,579
Total	33,910
Affiliate relationships
Changes in other amortizable intangible assets
Balance at the beginning of the period	978	1,208
Additions	37,900
Amortization	(4,968)	(230)
Net balance at the end of the period	33,910	978
Future estimated amortization expense
Total	$ 33,910	$ 978
Affiliate relationships | Weighted average
Changes in other amortizable intangible assets
Remaining amortization period	5 years 1 month 6 days