CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Cash flows from operating activities:
Net cash used in operating activities (Note 16)	$ (13,626)	$ (13,577)
Cash flows from investing activities:
Proceeds from sale of assets	36	71
Capitalized costs and acquisitions of property, plant and equipment	(2,815)	(3,156)
Net cash used in investing activities	(2,779)	(3,085)
Cash flows from financing activities:
Net cash used in / provided by financing activities	0
Net decrease in cash and cash equivalents	(16,405)	(16,662)
Cash and cash equivalents - beginning of period	48,649	120,990
Cash and cash equivalents - end of period	$ 32,244	$ 104,328