Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Property, plant and equipment, net	$ 1,226,758	$ 1,518,532
Construction-in-process	396,141	370,551
Senior unsecured bonds, interest rate	7.00%
Senior unsecured bonds, Unamortized premium	1,436
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	200,000,000	200,000,000
Common stock, shares issued	45,430,886	45,430,886
Common stock, shares outstanding	45,430,886	45,430,886
Variable Interest Entity, Primary Beneficiary
Property, plant and equipment, net	1,162,606	1,477,580
Construction-in-process	$ 253,775	$ 271,859