Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2012

Accounting Policies [Abstract]

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]

The amounts of stock-based compensation expense recognized were as follows (in thousands):

	2012		2011		2010
Stock-based compensation expense recognized as part of selling, general and administrative expense	$	6,545	$	6,640	$	6,135