Note 3 - Equity (Details Textual) - USD ($)					3 Months Ended		52 Months Ended
		May 10, 2022	Aug. 31, 2021	May 18, 2021	Sep. 30, 2023		Sep. 30, 2023	Aug. 29, 2023	Jun. 30, 2023	May 09, 2019
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount					$ 4,900,000		$ 4,900,000
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)					3 years
Preferred Stock, Shares Authorized (in shares)					30,000,000		30,000,000		30,000,000
Preferred Stock, Par or Stated Value Per Share (in dollars per share)					$ 0.01		$ 0.01		$ 0.01
Preferred Stock, Redemption Price Per Share (in dollars per share)								$ 10.70
Preferred Stock, Redemption, Aggerate Purchase Price								$ 8,964,214
Stock Repurchase Program, Authorized Amount				$ 8,000,000.0	$ 21,000,000,000,000		$ 21,000,000,000,000			$ 4,000,000.0
Stock Repurchase Program, Increase in Authorized Amount		$ 9,000,000.0	$ 4,000,000	$ 4,000,000
Stock Repurchase Program, Authorized Amount (in shares)					155,025	[1]	2,052,844
Shares Acquired, Average Cost Per Share					$ 8.53	[1]	$ 6.22
Stock Repurchase Program, Remaining Authorized Repurchase Amount					$ 8,513,828		$ 8,513,828
Blank Check [Member]
Preferred Stock, Shares Authorized (in shares)					30,000,000		30,000,000
Preferred Stock, Par or Stated Value Per Share (in dollars per share)					$ 0.01		$ 0.01
Series B Preferred Stock [Member]
Preferred Stock, Shares Authorized (in shares)					700,000		700,000		700,000
Preferred Stock, Shares, Number (in shares)					700,000
Preferred Stock, Redemption Price Per Share (in dollars per share)	[2]				$ 10.70		$ 10.70
Preferred Stock, Redemption, Aggerate Purchase Price	[2]				$ 8,964,214		$ 8,964,214
Preferred Stock, Shares Issued (in shares)					625,375		625,375		625,375
Series B-1 Preferred Stock [Member]
Preferred Stock, Shares Authorized (in shares)					550,000		550,000		550,000
Preferred Stock, Shares, Number (in shares)					550,000
Preferred Stock, Cash, Dividend Rate, Percentage					7.00%
Preferred Stock, Series B Preferred Shares, Dividend Rate, Percentage					9.00%
Preferred Stock, Redemption Price Per Share (in dollars per share)	[3]				$ 10.70		$ 10.70
Preferred Stock, Redemption, Aggerate Purchase Price	[3]				$ 8,964,214		$ 8,964,214
Preferred Stock, Shares Issued (in shares)					212,402		212,402		212,402
Restricted Stock Units (RSUs) [Member] | Vested and Unissued [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Outstanding, Number (in shares)					40,004		40,004

[1] We close our books and records on the last calendar day of each month to align our financial closing with our business processes.

[2] We close our books and records on the last calendar day of each month to align our financial closing with our business processes.

[3] We close our books and records on the last calendar day of each month to align our financial closing with our business processes.