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Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - $ / shares
 3 Months Ended 12 Months Ended
Jul. 02, 2021
Jul. 01, 2021
Jun. 29, 2021
Mar. 31, 2025
Mar. 31, 2024
Dec. 31, 2024
Preferred stock, dividend rate       8.875% 8.875%  
Common stock, par value (in dollars per share)       $ 0.01   $ 0.01
Common stock, shares authorized (in shares)       100,000,000   100,000,000
Common stock, shares issued (in shares)       81,785,011   75,353,889
Common stock, shares outstanding (in shares)       81,785,011   75,353,889
Series 1 Preferred Stock [Member]            
Preferred stock, par value (in dollars per share)       $ 0.01   $ 0.01
Preferred stock, shares authorized (in shares)       100,000   100,000
Preferred stock, shares issued (in shares)       329   329
Preferred stock, shares outstanding (in shares)       329   329
Series A Preferred Stock [Member]            
Preferred stock, par value (in dollars per share)   $ 0.01   $ 0.01   $ 0.01
Preferred stock, shares authorized (in shares)   7,500   7,500   7,500
Preferred stock, shares issued (in shares)       2,300   2,300
Preferred stock, shares outstanding (in shares)       2,300   2,300
Preferred stock, dividend rate 8.875% 8.875% 8.875% 8.875%   8.875%