Defined Contribution Bonus and Profit Sharing Plans Defined Contribution, Bonus, and Profit Sharing (Tables)

12 Months Ended

Dec. 31, 2011

Defined Contribution, Bonus, and Profit Sharing [Abstract]

Schedule of Costs of Retirement Plans [Table Text Block]

The expense for our defined contribution plans was as follows:

	Year Ended December 31,
	2011		2010		2009
	(in thousands)
Defined contribution plans expense	$	7,228	$	6,217	$	3,380

Schedule of Bonus and Profit Sharing Expenses [Table Text Block]

Bonus and profit sharing plans expense was as follows:

	Year Ended December 31,
	2011		2010		2009
	(in thousands)
Bonus and profit sharing plans expense	$	28,926	$	46,782	$	13,316