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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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