Note 18 - Stock Based Compensation - Stock Option Activity (Details) - $ / shares		12 Months Ended
		Dec. 31, 2019		Dec. 31, 2018		Dec. 31, 2017
Outstanding (in shares)	[1]	40,000		70,000		70,000
Outstanding, weighted average exercise price (in dollars per share)		$ 14.55		$ 12.48		$ 12.48
Granted, weighted average exercise price (in dollars per share)		$ 12.07		$ 16.21
Exercised (in shares)		0		(40,000)	[1]		[1]
Exercised, weighted average exercise price (in dollars per share)				$ 11.34
Canceled, forfeited, or expired (in shares)	[1]
Canceled, forfeited, or expired, weighted average exercise price (in dollars per share)
Granted (in shares)		10,000	[1]	10,000	[1]	0
Outstanding (in shares)	[1]	50,000		40,000		70,000
Outstanding, weighted average exercise price (in dollars per share)		$ 14.05		$ 14.55		$ 12.48

[1] Granted pursuant to the "Prior Plan".