Note 6 - Loan Payable - Schedule of Standby Fees Based on Total Funded Debt to EBITDA Ratio (Details)	3 Months Ended
	Mar. 31, 2023
Debt to EBITDA is Less Than 1.75 [Member]
Standby fees	0.30%
Debt to EBITDA is Greater Than or Equal to 1.75 and Less Than 2.25 [Member]
Standby fees	0.35%
Debt to EBITDA is Greater Than or Equal to 2.25 and Less Than 2.75 [Member]
Standby fees	0.45%
Debt to EBITDA is Greater Than or Equal to 2.75 and Less Than 3.25 [Member]
Standby fees	0.50%
Debt to EBITDA is Greater Than or Equal to 3.25 and Less Than 3.75 [Member]
Standby fees	0.55%
Debt to EBITDA Greater than Or Equal To 3.75 and Less than 4.00 [Member]
Standby fees	0.60%
Debt to EBITDA is Greater Than or Equal to 4.00 [Member]
Standby fees	0.70%
Bank of Montreal and Royal Bank of Canada [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Debt to EBITDA is Less Than 1.75 [Member]
Basis Spread on Variable Rate	1.50%
Bank of Montreal and Royal Bank of Canada [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Debt to EBITDA is Greater Than or Equal to 1.75 and Less Than 2.25 [Member]
Basis Spread on Variable Rate	1.75%
Bank of Montreal and Royal Bank of Canada [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Debt to EBITDA is Greater Than or Equal to 2.25 and Less Than 2.75 [Member]
Basis Spread on Variable Rate	2.25%
Bank of Montreal and Royal Bank of Canada [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Debt to EBITDA is Greater Than or Equal to 2.75 and Less Than 3.25 [Member]
Basis Spread on Variable Rate	2.50%
Bank of Montreal and Royal Bank of Canada [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Debt to EBITDA is Greater Than or Equal to 3.25 and Less Than 3.75 [Member]
Basis Spread on Variable Rate	2.75%
Bank of Montreal and Royal Bank of Canada [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Debt to EBITDA Greater than Or Equal To 3.75 and Less than 4.00 [Member]
Basis Spread on Variable Rate	3.00%
Bank of Montreal and Royal Bank of Canada [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Debt to EBITDA is Greater Than or Equal to 4.00 [Member]
Basis Spread on Variable Rate	3.50%
Bank of Montreal and Royal Bank of Canada [Member] | Base Rate [Member] | Debt to EBITDA is Less Than 1.75 [Member]
Basis Spread on Variable Rate	0.25%
Bank of Montreal and Royal Bank of Canada [Member] | Base Rate [Member] | Debt to EBITDA is Greater Than or Equal to 1.75 and Less Than 2.25 [Member]
Basis Spread on Variable Rate	0.50%
Bank of Montreal and Royal Bank of Canada [Member] | Base Rate [Member] | Debt to EBITDA is Greater Than or Equal to 2.25 and Less Than 2.75 [Member]
Basis Spread on Variable Rate	1.00%
Bank of Montreal and Royal Bank of Canada [Member] | Base Rate [Member] | Debt to EBITDA is Greater Than or Equal to 2.75 and Less Than 3.25 [Member]
Basis Spread on Variable Rate	1.25%
Bank of Montreal and Royal Bank of Canada [Member] | Base Rate [Member] | Debt to EBITDA is Greater Than or Equal to 3.25 and Less Than 3.75 [Member]
Basis Spread on Variable Rate	1.50%
Bank of Montreal and Royal Bank of Canada [Member] | Base Rate [Member] | Debt to EBITDA Greater than Or Equal To 3.75 and Less than 4.00 [Member]
Basis Spread on Variable Rate	1.75%
Bank of Montreal and Royal Bank of Canada [Member] | Base Rate [Member] | Debt to EBITDA is Greater Than or Equal to 4.00 [Member]
Basis Spread on Variable Rate	2.25%