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Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Property, plant and equipment, net | $ 1,734,691 | $ 1,556,378
Construction-in-process | $ 293,542 | $ 306,709
Common stock, par value (in dollars per share) | $ 0.001 | $ 0.001
Common stock, shares authorized (in shares) | 200,000,000 | 200,000,000
Common stock, shares issued (in shares) | 50,609,051 | 49,667,340
Common stock, shares outstanding (in shares) | 50,609,051 | 49,667,340
Senior Secured Notes [Member] |  |
Deferred financing costs | $ 8,113 | $ 9,177
Other Loans, Limited and Non-recourse [Member] |  |
Deferred financing costs | 5,258 | 6,409
Senior Unsecured Bonds [Member] |  |
Deferred financing costs | 580 | 755
Other Loans, Full Recourse [Member] |  |
Deferred financing costs | 1,011 | 1,346
Variable Interest Entity, Primary Beneficiary [Member] |  |
Property, plant and equipment, net | 1,631,900 | 1,483,224
Construction-in-process | $ 142,717 | $ 120,853

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