Condensed Consolidated Balance Sheets (Unaudited) (Parentheticals) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Property, plant and equipment, net (related to VIEs)	$ 1,519,945	$ 1,437,637
Construction-in-process (related to VIEs)	$ 277,990	$ 296,722
Senior unsecured bonds %	7.00%	7.00%
Senior unsecured bonds unamortized premium	$ 667	$ 667
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	200,000,000	200,000,000
Common stock, shares issued	49,002,583	45,537,162
Common stock, shares outstanding	49,002,583	45,537,162
Variable Interest Entity, Primary Beneficiary [Member]
Property, plant and equipment, net (related to VIEs)	$ 1,445,005	$ 1,339,342
Construction-in-process (related to VIEs)	$ 167,814	$ 162,006