Intangible Assets and Goodwill (Tables)

3 Months Ended

Mar. 31, 2013

Intangible Assets [Abstract]

Schedule Of Amortization Expense [Table Text Block]

		Three Months Ended March 31,
		2013	2012
Amortization expense	$	1,456	1,300

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

Years Ending December 31,
2013	$	5,392
2014		4,557
2015		3,229
2016		1,630
2017		734