Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2012

Intangible Assets [Abstract]

Schedule Of Amortization Expense [Table Text Block]

		Three Months Ended		Nine Months Ended
		September 30,		September 30,
		2012	2011	2012	2011
Amortization expense	$	1,275	1,517	3,900	4,673

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]

Years Ending December 31,
2012	$	4,879
2013		4,044
2014		3,271
2015		2,051
2016		844