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Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($)
Jun. 30, 2022
Dec. 31, 2021
Preferred stock, shares authorized (in shares) 1,000,000  
Common Class A [Member]    
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) 11,793,757 11,599,720
Common stock, shares outstanding (in shares) 11,793,757 11,599,720
Common Class A [Member] | SPAC, Murphy Canyon Acquisition Corp. [Member]    
Temporary equity shares outstanding (in shares) 13,225,000  
Temporary equity per share (in dollars per share) $ 10.2  
Temporary equity issuance cost $ 6,400,000  
Series D Preferred Stock [Member]    
Preferred stock, par value (in dollars per share) $ 0.01 $ 0.01
Preferred stock, shares authorized (in shares) 1,000,000 1,000,000
Preferred stock, shares issued (in shares) 920,000 920,000
Preferred stock, shares outstanding (in shares) 920,000 920,000
Preferred stock, liquidation preference (in dollars per share) $ 25.00 $ 25.00