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Note 12 - Subsequent Events (Details Textual)
$ / shares in Units, $ in Thousands
3 Months Ended
May 02, 2022
USD ($)
$ / shares
Apr. 12, 2022
USD ($)
Mar. 31, 2022
USD ($)
Mar. 31, 2021
USD ($)
Dividends, Common Stock, Total     $ 6,727 $ 6,718
Subsequent Event [Member]        
Dividends, Common Stock, Total $ 6,700      
Common Stock, Dividends, Per Share, Declared (in dollars per share) | $ / shares $ 0.12      
Dividends Payable, Date of Record May 16, 2022      
Dividends Payable, Date to be Paid May 31, 2022      
Subsequent Event [Member] | Mizrahi Loan Agreement [Member]        
Debt Instrument, Face Amount   $ 75,000    
Debt Instrument, Number of Payments   16    
Debt Instrument, Periodic Payment, Total   $ 4,700    
Debt Instrument, Term (Year)   8 years    
Debt Instrument, Interest Rate, Stated Percentage   4.10%    
Debt Instrument, Covenant, Minimum Equity Capital   $ 750,000    
Debt Instrument, Date of First Required Payment   Oct. 12, 2022    
Subsequent Event [Member] | Mizrahi Loan Agreement [Member] | Maximum [Member]        
Debt Instrument, Covenant, Debt to Adjusted EBITDA Ratio   6.00%    
Subsequent Event [Member] | Mizrahi Loan Agreement [Member] | Minimum [Member]        
Debt Instrument, Covenant, Equity Capital to Total Assets Ratio   25.00%