Intangible Assets (Tables)

6 Months Ended

Jun. 30, 2012

Intangible Assets [Abstract]

Schedule Of Amortization Expense [Table Text Block]

		Three Months Ended June 30		Six Months Ended June 30,
		2012	2011	2012	2011
Amortization expense	$	1,324	1,583	2,625	3,156

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

Years Ending December 31,
2012	$	4,722
2013		3,808
2014		3,036
2015		1,835
2016		670