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Consolidated Balance Sheets (Parentheticals) - $ / shares
 12 Months Ended
Jul. 02, 2021
Jul. 01, 2021
Jun. 29, 2021
Dec. 31, 2021
Dec. 31, 2020
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 7,531
Preferred stock, shares outstanding (in shares)       329 7,531
Preferred stock, dividend rate       8.857%  
Common stock, par value (in dollars per share)       $ 0.01 $ 0.01
Common stock, shares authorized (in shares)       70,000,000 70,000,000
Common stock, shares issued (in shares)       43,656,169 36,902,361
Common stock, shares outstanding (in shares)       43,656,169 36,902,361
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 0
Preferred stock, shares issued (in shares)       2,300 0
Preferred stock, shares outstanding (in shares)       2,300 0
Preferred stock, dividend rate 8.875% 8.875% 8.875% 8.875% 8.875%