Intangible Assets and Goodwill (Tables)

6 Months Ended

Jun. 30, 2013

Intangible Assets [Abstract]

Schedule Of Amortization Expense [Table Text Block]

		Three Months Ended June 30,		Six Months Ended June 30,
		2013	2012	2013	2012
Amortization expense	$	1,431	1,324	2,887	2,625

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

Years Ending December 31,
2013	$	5,478
2014		4,670
2015		3,347
2016		856
2017		146