Note 7 - Mortgage Loans Payable (Details) (USD $)	0 Months Ended					1 Months Ended
	Apr. 10, 2019	Feb. 28, 2017	Dec. 31, 2011	Dec. 29, 2010	Jun. 30, 2008	Jan. 31, 2013	Dec. 31, 2012	Mar. 31, 2012	Feb. 29, 2012	Dec. 29, 2010	Jun. 30, 2008	Jun. 30, 2007	Apr. 30, 2019	Jul. 31, 2018	Apr. 10, 2014	Jan. 17, 2012	Feb. 28, 2011 acre	Mar. 31, 2009
Note 7 - Mortgage Loans Payable (Details) [Line Items]
Loans Assumed												$ 5,551,191
Debt Instrument, Interest Rate, Stated Percentage	5.50%	5.00%			4.71%				5.75%		4.71%		5.00%	5.66%	5.875%	5.75%
Debt Instrument, Basis Spread on Variable Rate (in Basis Points)	3.00%	2.75%	2.25%	1.00%	2.25%
Debt Instrument Minimum Periodic Payment and Modified Debt								31,086	33,439
Prepayment Penalty						200,129	133,401
Mortgage Loans on Real Estate, Face Amount of Mortgages				4,000,000	5,250,000					4,000,000	5,250,000							8,000,000
Debt Instrument, Periodic Payment, Principal											17,500
Debt Instrument, Periodic Payment Terms, Balloon Payment to be Paid														3,168,000
Line of Credit Facility, Increase (Decrease), Net										$ (1,750,000)
Mortgage Loan Amortization Period										20 years
Area of Real Estate Property (in Acres)																	35.1
Cortlandt Mortgage [Member]
Note 7 - Mortgage Loans Payable (Details) [Line Items]
Debt Instrument, Interest Rate, Stated Percentage			2.50%
Maximum [Member]
Note 7 - Mortgage Loans Payable (Details) [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		5.75%