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Note 15 - Equity-based Compensation (Details Textual) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended 6 Months Ended
Mar. 06, 2022
Mar. 31, 2017
Oct. 31, 2007
Jun. 30, 2022
Mar. 31, 2022
Jun. 30, 2021
Mar. 31, 2021
Jun. 30, 2022
Jun. 30, 2021
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period (in shares)       0       0  
Proceeds from Stock Options Exercised       $ 0       $ 0  
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total       1,000       $ 1,000  
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)               2 years 18 days  
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)               336,000 92,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)               180,000 900,000
Share-Based Payment Arrangement, Expense         $ 154   $ 296 $ 338 $ 479
Share-Based Payment Arrangement, Nonemployee [Member]                  
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)               0 0
Share-Based Payment Arrangement, Expense           $ 54     $ 107
Share-Based Payment Arrangement, Option [Member]                  
Share-Based Payment Arrangement, Expense       $ 154   $ 242   $ 338 $ 372
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)   2,318,486              
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) 1,910,634                
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares)       3,295,752       3,295,752  
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%