Goodwill and Intangible Assets Future Amortization Expense (Tables)

12 Months Ended

Dec. 31, 2012

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Expected Amortization Expense [Table Text Block]

Annual amortization expense for intangible assets over the next five years is summarized as follows:

Year Ending December 31,
2013	$	8,259
2014	6,160
2015	5,194
2016	3,357
2017	2,750
Thereafter	9,361