COMMITMENTS AND CONTINGENCIES Future Minimum Rental Payments Required under Noncancelable Operating Leases (Tables)

12 Months Ended

Dec. 31, 2012

Commitments and Contingencies Disclosure [Abstract]

Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]

Future minimum rental payments required under noncancelable operating leases as of December 31, 2012 are as follows:

Year Ended December 31,
2013		2014		2015		2016		2017		Thereafter		Total
(in thousands of U.S. dollars)
$	18,934	$	15,968	$	12,084	$	9,216	$	7,139	$	21,418	$	84,759