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Note 23 - Quarterly Financial Information (Unaudited) (Details Textual) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Income Tax Expense (Benefit), Total | $ (28,329) | $ 6,224 | $ 32,765 | $ 11,004 | $ 7,356 | $ 12,109 | $ 8,515 | $ 9,079 | $ 21,664 | $ 37,059 | $ (16,057)
Net Income (Loss) Attributable to Parent, Total | 64,620 | $ 23,960 | $ 8,640 | $ 35,194 | 23,324 | $ 11,959 | $ 23,724 | $ 29,701 | 132,414 | 88,708 | 120,372
Restatement Adjustment [Member] |  |  |  |  |  |  |  |  |  |  |
Income Tax Expense (Benefit), Total | 1,300 |  |  |  | 4,900 |  |  |  | 23,075 | 5,222 | (799)
Net Income (Loss) Attributable to Parent, Total | $ (1,300) |  |  |  | $ (4,900) |  |  |  | $ (23,075) | $ (5,222) | $ 799

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