Annual report pursuant to Section 13 and 15(d)

Income Taxes - Components of Deferred Tax Assets (Details)

v3.6.0.2
Income Taxes - Components of Deferred Tax Assets (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Deferred Tax Assets [Abstract]    
Federal and foreign NOL carryforwards and credits $ 1,060,026 $ 862,218
State NOL carryforwards and credits 183,153 166,321
Book deferred gain 77,182 77,182
Share-based compensation expense 52,727 71,693
Property, plant and equipment 0 12,957
Derivative instruments 46,754 54,052
Long-term debt 17,676 8,725
Other 13,511 5,641
Less: valuation allowance (1,251,959) (1,070,309)
Total deferred tax assets 199,070 188,480
Deferred Tax Liabilities [Abstract]    
Investment in limited partnership (76,265) (57,466)
Convertible debt (118,341) (128,948)
Property, plant and equipment (4,464) 0
Total deferred tax liabilities (199,070) (186,414)
Total net deferred tax assets 0 $ 2,066
Valuation Allowance, Deferred Tax Asset, Increase, Amount 181,700  
Federal Tax [Member]    
Deferred Tax Liabilities [Abstract]    
Deferred Tax Assets, Operating Loss Carryforwards, Subject to Expiration 3,800,000  
State Tax [Member]    
Deferred Tax Liabilities [Abstract]    
Deferred Tax Assets, Operating Loss Carryforwards, Subject to Expiration $ 2,300,000