Note 26 - Captive Insurance Company (Details Textual) - USD ($)	12 Months Ended		148 Months Ended	183 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Feb. 01, 2021	Dec. 31, 2022
Letters of Credit Outstanding, Amount	$ 43,300,000			$ 43,300,000
Kimco Insurance Company [Member]
Captive Insurance, Percentage of Occurance Risk Layer	100.00%			100.00%
Captive Insurance, Obligation Per Occurrence	$ 250,000			$ 250,000
Letters of Credit Outstanding, Amount	27,100,000			27,100,000
Increase (Decrease) in Incurred Insurance Losses and Loss Adjustment Expenses		$ 5,300,000
Kimco Insurance Company [Member] | Minimum [Member]
Captive Insurance, Annual Aggregates Per Policy				7,800,000
Captive Insurance, Obligations to Reinsurance Provider, Percent of Incurred Losses			8.00%
Captive Insurance, Billed On Fee Per Claim Basis	53,000			53,000
Kimco Insurance Company [Member] | Maximum [Member]
Captive Insurance, Annual Aggregates Per Policy				11,500,000
Captive Insurance, Obligations to Reinsurance Provider, Percent of Incurred Losses			12.20%
Captive Insurance, Billed On Fee Per Claim Basis	1,523,000			1,523,000
U.S. Fire & Indemnity Company [Member] | Third Party Reinsurer [Member]
Captive Insurance, Obligation Per Occurrence	250,000			250,000
Captive Insurance, Annual Aggregates Per Policy	2,000,000
U.S. Fire & Indemnity Company [Member] | All Perils Except Floods, Windstorm or Earthquake [Member]
Captive Insurance, Obligation Per Occurrence	100,000			$ 100,000
U.S. Fire & Indemnity Company [Member] | Floods, Windstorms or Earthquake [Member]
Captive Insurance, Annual Aggregates Per Policy	$ 5,000,000