Employee Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2012

Employee Benefit Plans [Abstract]

Matching contributions [Table Text Block]

The table below sets forth our matching contributions for the past three years (in thousands):

	2012		2011		2010
Matching contributions - 401(k)	$	4,589	$	4,015	$	3,600
Matching contributions - deferred compensation plan	262		59		18