Note 19 - Earnings Per Share (Details Textual) - $ / shares	3 Months Ended		6 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020
Incremental Common Shares Attributable to Dilutive Effect of Call Options and Warrants (in shares)	212,500	188,125
Minimum [Member]
Common Stock, Par or Stated Value Per Share (in dollars per share)	$ 2.53	$ 2.69	$ 2.53	$ 2.69
Maximum [Member]
Common Stock, Par or Stated Value Per Share (in dollars per share)	$ 5.98	$ 5.98	$ 5.98	$ 5.98
Share-based Payment Arrangement, Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period (in shares)			724,500	623,500