Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2012

Commitments and Contingencies Disclosure [Abstract]

Future minimum annual lease payments and obligations [Table Text Block]

Future minimum annual lease payments and obligations pursuant to the TRA are summarized as follows:

	Operating Lease Obligations		Payments Pursuant to the TRA		Revolving Credit Facility(a)		Contingent Consideration Obligations(b)		Acquisition Retention Obligations(c)		Total
Year Ending December 31,
2013	$	21,257	$	7,623	$	—	$	5,964	$	3,478	$	38,322
2014	19,688		8,985		—		6,662		4,046		39,381
2015	18,678		9,324		—		2,303		2,934		33,239
2016	16,870		9,686		22,500		1,407		167		50,630
2017	16,033		10,080		—		171		—		26,284
Thereafter	62,505		102,383		—		778		—		165,666
	$	155,031	$	148,081	$	22,500	$	17,285	$	10,625	$	353,522

Schedule of Rent Expense [Table Text Block]

Total rental expense for operating leases is summarized as follows:

	Year Ended
	December 31, 2012		December 31, 2011		December 31, 2010
Rental expense	$	18,015	$	15,672	$	15,690