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Consolidated Balance Sheets (Parentheticals) - USD ($)
$ / shares in Thousands, $ in Thousands
Dec. 31, 2023
Dec. 31, 2022
Accounts receivable, allowance for doubtful accounts $ 511 $ 693
Common stock, no par value (in dollars per share) $ 0 $ 0
Common stock, shares authorized (in shares) 250,000,000 250,000,000
Common stock, shares issued (in shares) 10,903,405 10,817,110
Common stock, shares outstanding (in shares) 10,903,405 10,817,110
Series A Preferred Units [Member]    
Preferred stock, no par value (in dollars per share) $ 0 $ 0
Preferred shares authorized (in shares) 33,333,333 33,333,333
Preferred shares issued (in shares) 15,243,600 14,583,333
Preferred shares outstanding (in shares) 15,243,600 14,583,333