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Note 18 - Equity-method Investments (Tables) | 12 Months Ended
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Dec. 31, 2016
Notes Tables |
Equity Method Investment, Summarized Financial Information, Balance Sheet [Table Text Block] |
December 31, |  | 2016 |  |  | 2015 |
Carrying value, recorded as a component of other non-current assets |  | $ | — |  |  | $ | 22,284 |
Present value of the obligation associated with future equity contributions, recorded as a component of accrued liabilities and other long-term liabilities |  |  | — |  |  |  | 22,511 |
Equity Method Investment, Summarized Financial Information, Income Statement [Table Text Block] |
Year Ended December 31, |  | 2016 |  |  | 2015 |  |  | 2014 |
Asset impairments to write investment down to fair value |  | $ | 13,992 |  |  | $ | 16,521 |  |  | $ | 1,853 |
Our portion of the partnership’s operating losses |  |  | 8,262 |  |  |  | 6,929 |  |  |  | 1,160 |
Non-cash interest expense related to the amortization of the discounted fair value of future equity contributions |  |  | 185 |  |  |  | 674 |  |  |  | 152 |
Tax benefits and credits generated |  |  | 28,530 |  |  |  | 30,832 |  |  |  | 6,506 |

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