Condensed Consolidated Balance Sheets (Unaudited) (Parentheticals) (USD $) In Thousands, except Per Share data, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Property, plant and equipment, net (related to VIEs) (in Dollars)	$ 1,415,163	$ 1,252,873
Construction-in-process (related to VIEs) (in Dollars)	295,635	396,141
Senior unsecured bonds %	7.00%
Senior unsecured bonds unamortized premium (in Dollars)	1,283
Common stock, par value (in Dollars per share)	$ 1	$ 1
Common stock, shares authorized (in Shares)	200,000,000	200,000,000
Common stock, shares issued (in Shares)	45,430,886	45,430,886
Common stock, shares outstanding (in Shares)	45,430,886	45,430,886
Variable Interest Entity, Primary Beneficiary [Member]
Property, plant and equipment, net (related to VIEs) (in Dollars)	1,367,078	1,188,721
Construction-in-process (related to VIEs) (in Dollars)	$ 87,820	$ 253,775