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Note 2 - Revision of Previously Issued Financial Statements - Impact of Overstatement of DDA (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended | 9 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Jun. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017 | Dec. 31, 2017 | Dec. 31, 2016 | Jun. 30, 2018
Credit - Deferred tax liability | $ 164,928 |  |  |  |  | $ 164,928 |  | $ 124,352 |  |
Credit - Accumulated deficit | (223,280) |  |  |  |  | (223,280) |  | (218,089) |  |
Debit - DDA expense |  |  |  | $ 31,073 | $ 59,855 | 108,814 | $ 91,255 | 126,467 | $ 124,918 |
Income Tax Expense (Benefit), Total | (2,679) | $ (5,130) | $ 16,366 | (28,800) | (12,434) | (1,484) | (17,564) | 20,963 | 28,090 |
Net Income (Loss) Attributable to Parent, Total | $ (23,184) | 314 | (24,948) | 25,082 | 134 | (2,870) | 447 | (28,520) | 61,569 |
Restatement Adjustment [Member] |  |  |  |  |  |  |  |  |  |
Credit - Deferred tax liability |  |  |  |  |  |  |  | 2,806 |  |
Credit - Accumulated deficit |  |  |  |  |  |  |  | (22,605) |  |
Debit - DDA expense |  |  |  | 1,483 | 2,947 |  | 3,621 | 4,537 | 7,505 |
Income Tax Expense (Benefit), Total |  | 271 | 271 | 271 | 542 |  | 813 | 1,084 | 662 |
Net Income (Loss) Attributable to Parent, Total |  | $ (1,098) | $ (932) | $ (1,752) | $ (2,684) |  | $ (3,783) | $ (5,001) | $ (7,978) |
Overstatement of Accumulated Depreciation, Depletion and Amortization [Member] |  |  |  |  |  |  |  |  |  |
Debit - DDA expense |  |  |  |  |  | (3,700) |  |  |  |
Income Tax Expense (Benefit), Total |  |  |  |  |  | 1,000 |  |  |  |
Net Income (Loss) Attributable to Parent, Total |  |  |  |  |  | $ 2,700 |  |  |  |
Overstatement of Accumulated Depreciation, Depletion and Amortization [Member] | Restatement Adjustment [Member] |  |  |  |  |  |  |  |  |  |
Debit - Accumulated DDA (recorded within properties, plants, equipment and mineral interests, net) |  |  |  |  |  |  |  |  |  | $ 14,200
Credit - Deferred tax liability |  |  |  |  |  |  |  |  |  | (3,800)
Credit - Accumulated deficit |  |  |  |  |  |  |  |  |  | $ (7,700)

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- Definition Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.14) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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