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Note 15 - Equity-based Compensation (Details Textual) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended 12 Months Ended 13 Months Ended
Mar. 06, 2022
Jul. 31, 2021
Jul. 31, 2020
Mar. 31, 2017
Oct. 31, 2007
Sep. 30, 2022
Dec. 31, 2022
Dec. 31, 2021
Jul. 31, 2021
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period (in shares)           0      
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total             $ 500    
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)             2 years 14 days    
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)             19,000    
Share-Based Payment Arrangement, Expense               $ 933  
Share-Based Payment Arrangement, Nonemployee [Member]                  
Share-Based Payment Arrangement, Expense             $ 240    
Employees and Directors [Member]                  
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)             18,607 14,748  
Share-Based Payment Arrangement, Option [Member]                  
Share-Based Payment Arrangement, Expense             $ 200 $ 700  
Share-Based Payment Arrangement, Option [Member] | Share-Based Payment Arrangement, Nonemployee [Member]                  
Share-Based Payment Arrangement, Expense           $ 0      
Restricted Stock Units (RSUs) [Member]                  
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)             5,000    
Restricted Stock Units (RSUs) [Member] | Employees and Directors [Member]                  
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)             5,148 34,291  
Restricted Stock [Member] | Mr. Mark Sieczkarek [Member]                  
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)     9,382            
Share-Based Payment Arrangement, Expense                 $ 400
Restricted Stock [Member] | Mr. Mark Sieczkarek [Member] | Share-Based Payment Arrangement, Tranche Two [Member]                  
Share-Based Payment Arrangement, Expense   $ 200              
The 2007 Omnibus Incentive Plan [Member] | Maximum [Member] | Incentive Stock Options (ISOs) [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year)         10 years        
The 2017 Omnibus Incentive Plan [Member]                  
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares)       66,243          
Share-based Compensation Arrangement by Share-based Payment Award, Annual Increase in Shares Authorized, Percentage of Outstanding Common Stock       4.00%          
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Additional Shares Authorized (in shares) 54,590                
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares)             90,591    
The 2017 Omnibus Incentive Plan [Member] | Incentive Stock Options (ISOs) [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percentage of Stock Owned by Shareholder, Minimum       10.00%          
The 2017 Omnibus Incentive Plan [Member] | Share-Based Payment Arrangement, Option [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)       4 years          
The 2017 Omnibus Incentive Plan [Member] | Maximum [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year)       10 years          
The 2017 Omnibus Incentive Plan [Member] | Maximum [Member] | Incentive Stock Options (ISOs) [Member] | Shareholder of More Than 10% [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year)       5 years          
The 2017 Omnibus Incentive Plan [Member] | Minimum [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percent       100.00%          
The 2017 Omnibus Incentive Plan [Member] | Minimum [Member] | Incentive Stock Options (ISOs) [Member] | Shareholder of More Than 10% [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percent       110.00%