Note 12 - Leases (Details Textual)		1 Months Ended	12 Months Ended
	Jul. 31, 2019 USD ($) a	Feb. 29, 2016 USD ($) a	Dec. 31, 2019 USD ($)
Operating Lease, Cost			$ 97,000
Long-term Debt, Total			137,900,000
Fenner Valley Farms LLC [Member]
Lease Term		99 years
Area of Real Estate Property | a		2,100
Long-term Debt, Total		$ 12,000,000
Termination Period After Lease Effective Date		20 years
Lease Compounded Annual Return, Percentage		10.00%
Minimum Future Payments from Leases Held for Investment		$ 14,400,000
Reimbursement of Water Related Infrastructure from Leased Property, Annual Percentage		8.00%
Maximum Reimbursement of Pipeline Related Development Expenses from Leased Property		$ 3,000,000
Leased Property, Sale Price		1
Legal Fees		$ 490,000
Annual Expected Sublease Income, Year One			420,000
Annual Expected Sublease Income, Year Two			420,000
Annual Expected Sublease Income, Year Three			420,000
Annual Expected Sublease Income, Year Four			420,000
Annual Expected Sublease Income, Year Five			$ 420,000
SoCal Hemp JV LLC [Member]
Area of Real Estate Property | a	1,280
Lessee, Operating Lease, Term of Contract	5 years
Lessee, Operating Lease, Number of Renewals	3
Lessee, Operating Lease, Renewal Term	5 years
Lessee, Operating Lease Rental Expense Per Acre of Leased Property	$ 500
Minimum [Member]
Lessee, Lease, Remaining Term			240 days
Maximum [Member]
Lessee, Lease, Remaining Term			1 year 240 days
Maximum [Member] | SoCal Hemp JV LLC [Member]
Area of Real Estate Property | a	9,600