Note 11 - Long-term Incentive Plan - Stock Option Activity (Details) - $ / shares	3 Months Ended	9 Months Ended
	Mar. 31, 2022	Sep. 30, 2022
Options outstanding (in shares)	54,000	54,000
Weighted average exercise price, options outstanding (in dollars per share)	$ 1.83	$ 1.83
Weighted average fair value at grant date, options outstanding (in dollars per share)	$ 0.43	$ 0.43
Options granted (in shares)		0
Weighted average exercise price, options granted (in dollars per share)		$ 0
Options exercised (in shares)	0	0
Weighted average exercise price, options exercised (in dollars per share)		$ 0
Weighted average fair value at grant date, options exercised (in dollars per share)		$ 0
Options expired (in shares)		0
Weighted average exercise price, options expired (in dollars per share)		$ 0
Weighted average fair value at grant date, options expired (in dollars per share)		$ 0
Options cancelled or forfeited (in shares)		0
Weighted average exercise price, options cancelled or forfeited (in dollars per share)		$ 0
Options outstanding (in shares)		54,000
Weighted average exercise price, options outstanding (in dollars per share)		$ 1.83
Weighted average fair value at grant date, options outstanding (in dollars per share)		$ 0.43
Options Vested (in shares)		54,000
Weighted average exercise price, options Vested (in dollars per share)		$ 1.83
Weighted average fair value at grant date, options Vested (in dollars per share)		$ 0.43
Options exercisable (in shares)		0