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Note 7 - Commitments and Contingent Liabilities (Details Textual) - USD ($) |  |  |  |  |  | 3 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jan. 12, 2018 | Dec. 18, 2017 | Dec. 15, 2017 | Nov. 18, 2017 | Jun. 01, 2017 | Jan. 31, 2018 | Feb. 23, 2018 | Feb. 01, 2018 | Jan. 11, 2018
8.0% Senior Notes due 2019, 13.5% Senior Notes due 2026 and 5.0% Senior Notes due 2040 [Member] |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  |  |  |  | $ 185,000,000
8.0% Senior Notes Due 2019 [Member] |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  | 8.00% |  |  | 8.00%
Thirteen and a Half Percent Senior Notes Due 2026 [Member] |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  |  |  |  | 13.50%
Five Percent Senior Notes due 2040 [Member] |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  |  |  |  | 5.00%
Subsequent Event [Member] | 8.0% Senior Notes Due 2019 [Member] |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  |  |  | $ 170,200,000 |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  |  |  | 8.00% |
Subsequent Event [Member] | Thirteen and a Half Percent Senior Notes Due 2026 [Member] |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  |  |  | $ 90,600,000 |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  |  |  | 13.50% |
Subsequent Event [Member] | Five Percent Senior Notes due 2040 [Member] |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  |  |  | $ 90,100,000 |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  |  |  | 5.00% |
Grandview at Riverwalk Port Imperial Condominium Association Construction Defect Lawsuit [Member] |  |  |  |  |  |  |  |  |
Loss Contingency, Damages Sought, Value |  |  |  |  |  | $ 41,300,000 |  |  |
Loss Contingency, Damages Awarded, Value |  |  |  |  | $ 9,000,000 |  |  |  |
Litigation Settlement, Amount Awarded to Other Party | $ 10,400,000 |  |  |  |  |  |  |  |
Grandview at Riverwalk Port Imperial Condominium Association Construction Defect Lawsuit [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |
Loss Contingency, Estimate of Possible Loss |  |  |  |  |  | 0 |  |  |
Grandview at Riverwalk Port Imperial Condominium Association Construction Defect Lawsuit [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |
Loss Contingency, Estimate of Possible Loss |  |  |  |  |  | 11,100,000 |  |  |
Grandview at Riverwalk Port Imperial Condominium Association Construction Defect Lawsuit [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |
Loss Contingency, Supersedeas Bond |  |  |  |  |  |  | $ 11,100,000 |  |
Grandview at Riverwalk Port Imperial Condominium Association Construction Defect Lawsuit [Member] | Breach of Warranty and New Jersey Fraud Claims Prior to Statutory Trebling [Member] |  |  |  |  |  |  |  |  |
Loss Contingency, Damages Awarded, Value |  |  |  |  | $ 3,000,000 |  |  |  |
Grandview at Riverwalk Port Imperial Condominium Association Construction Defect Lawsuit [Member] | Attorney Fees and Costs [Member] |  |  |  |  |  |  |  |  |
Litigation Settlement, Amount Awarded to Other Party |  |  | $ 1,400,000 | $ 1,800,000 |  |  |  |  |
Litigation Settlement, Amount Sought from Other Party |  |  |  | $ 4,800,000 |  |  |  |  |
Construction and Design Defects Lawsuit from Second Condominium Association [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |
Loss Contingency, Damages Sought, Value |  |  |  |  |  | 69,000,000 |  |  |
Construction and Design Defects Lawsuit from Second Condominium Association [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |
Loss Contingency, Damages Sought, Value |  |  |  |  |  | $ 79,000,000 |  |  |
Class Action Lawsuit Filed by Plaintiff Joseph Hong [Member] |  |  |  |  |  |  |  |  |
Litigation Settlement, Amount Awarded to Other Party |  | $ 275,000 |  |  |  |  |  |  |

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