Commitments and Contingencies Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2013

Commitments and Contingencies Disclosure [Abstract]

Long-term Purchase Commitment [Table Text Block]

The annual minimum payments for the next five years and total minimum lease payments thereafter are presented below:

Years Ending December 31,	(in thousands)
2014	$	179,118
2015	147,119
2016	144,438
2017	132,559
2018	128,418
Thereafter	481,947
Total	$	1,213,599