Quarterly report pursuant to Section 13 or 15(d)

Note 2 - Summary of Significant Accounting Policies (Details Textual)

v3.23.3
Note 2 - Summary of Significant Accounting Policies (Details Textual)
1 Months Ended 3 Months Ended 6 Months Ended 9 Months Ended 18 Months Ended
Aug. 21, 2023
shares
May 01, 2023
USD ($)
$ / shares
shares
Apr. 30, 2023
$ / shares
shares
Jan. 01, 2022
$ / shares
shares
Dec. 31, 2022
USD ($)
$ / shares
shares
Sep. 30, 2023
USD ($)
Jun. 30, 2023
USD ($)
Sep. 30, 2022
USD ($)
Jun. 30, 2023
USD ($)
shares
Sep. 30, 2023
USD ($)
Sep. 30, 2022
USD ($)
Jun. 30, 2023
USD ($)
shares
Dec. 31, 2021
USD ($)
Net Income (Loss) Attributable to Parent           $ (2,984,000)   $ (52,602,000)   $ (17,056,000) $ (69,238,000)    
Retained Earnings (Accumulated Deficit)         $ (210,743,000) (227,799,000)       (227,799,000)      
Net Cash Provided by (Used in) Operating Activities                   (14,090,000) (16,036,000)    
Cash and Cash Equivalents, at Carrying Value         2,482,000 1,140,000       1,140,000      
Contract with Customer, Liability         111,000 336,000       336,000     $ 47,000
Contract with Customer, Liability, Revenue Recognized           0   0   82,000 47,000    
Advertising Expense           28,000   126,000   50,000 409,000    
Share-Based Payment Arrangement, Expense           643,000   1,185,000   2,175,000 3,284,000    
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures in Period | shares     58,951                    
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross | shares 126,923                        
Number of Reportable Segments                 1        
Income Tax Expense (Benefit)           (0) $ (313,000) (0) $ (313,000) (313,000) (46,000)    
Common Stock Underlying All Outstanding Stock Option, Restricted Stock Units and Warrants [Member]                          
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount | shares                 1,044,000     339,000  
Common Stock Potentially Issuable in Connection With Conversion of Outstanding Preferred Stock [Member]                          
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount | shares                 4,077,000        
Prepaid Expenses and Other Current Assets [Member]                          
Deferred Costs, Current         $ 349,000   $ 289,000   $ 289,000     $ 289,000  
Share-Based Payment Arrangement, Employee [Member]                          
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures in Period | shares   29,224                      
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross | shares   63,900 305,000                    
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price | $ / shares   $ 9.81 $ 9.80                    
Share-Based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount   $ 960,000                      
Performance Stock Units [Member]                          
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Granted | shares     67,500                    
Share-Based Payment Arrangement, Expense           0   $ 570,000   298,000 $ 1,691,000    
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Forfeitures | shares     67,500                    
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount           540,000       540,000      
Performance Stock Units [Member] | Share-Based Payment Arrangement, Tranche One [Member]                          
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Requirement, Stock Price | $ / shares     $ 16.00                    
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage     20.00%                    
Performance Stock Units [Member] | Share-Based Payment Arrangement, Tranche Two [Member]                          
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Requirement, Stock Price | $ / shares     $ 20.00                    
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage     20.00%                    
Performance Stock Units [Member] | Share-Based Payment Arrangement, Tranche Three [Member]                          
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Requirement, Stock Price | $ / shares     $ 24.00                    
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage     20.00%                    
Performance Stock Units [Member] | Share-Based Payment Arrangement, Tranche Four [Member]                          
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Requirement, Stock Price | $ / shares     $ 28.00                    
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage     20.00%                    
Performance Stock Units [Member] | Share-Based Payment Arrangement, Tranche Five [Member]                          
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Requirement, Stock Price | $ / shares     $ 32.00                    
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage     20.00%                    
Performance Stock Units [Member] | Super League 2014 Amended and Restated Stock Option and Incentive Plan [Member]                          
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Granted | shares       67,500                  
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting, Number of Shares Required Vested | shares       13,500                  
Performance Stock Units [Member] | Super League 2014 Amended and Restated Stock Option and Incentive Plan [Member] | Share-Based Payment Arrangement, Tranche One [Member]                          
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Requirement, Stock Price | $ / shares       $ 95.00                  
Performance Stock Units [Member] | Super League 2014 Amended and Restated Stock Option and Incentive Plan [Member] | Share-Based Payment Arrangement, Tranche Two [Member]                          
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Requirement, Stock Price | $ / shares       120.00                  
Performance Stock Units [Member] | Super League 2014 Amended and Restated Stock Option and Incentive Plan [Member] | Share-Based Payment Arrangement, Tranche Three [Member]                          
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Requirement, Stock Price | $ / shares       140.00                  
Performance Stock Units [Member] | Super League 2014 Amended and Restated Stock Option and Incentive Plan [Member] | Share-Based Payment Arrangement, Tranche Four [Member]                          
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Requirement, Stock Price | $ / shares       160.00                  
Performance Stock Units [Member] | Super League 2014 Amended and Restated Stock Option and Incentive Plan [Member] | Share-Based Payment Arrangement, Tranche Five [Member]                          
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Requirement, Stock Price | $ / shares       $ 180.00                  
Stock Warrants [Member]                          
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Forfeitures | shares     26,100                    
Stock Warrants [Member] | Share-Based Payment Arrangement, Nonemployee [Member]                          
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Granted | shares         25,000                
Share-Based Payment Arrangement, Expense           62,000       186,000      
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares         $ 13.40                
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value | $ / shares         $ 10.00                
Modified Performance Stock Units [Member]                          
Share-Based Payment Arrangement, Expense           131,000       220,000      
Modified Stock Options [Member] | Share-Based Payment Arrangement, Employee [Member]                          
Share-Based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount   449,000       347,000       347,000      
Vested Modified Stock Options [Member] | Share-Based Payment Arrangement, Employee [Member]                          
Share-Based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount   $ 101,000       112,000       $ 112,000      
Unvested Modified Stock Options [Member] | Share-Based Payment Arrangement, Employee [Member]                          
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition   4 years               3 years      
Share-Based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount   $ 348,000       $ 235,000       $ 235,000      
Share-Based Payment Arrangement, Option [Member] | Share-Based Payment Arrangement, Employee [Member]                          
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition   4 years                      
Minimum [Member]                          
Finite-Lived Intangible Asset, Useful Life           3 years       3 years      
Minimum [Member] | Performance Stock Units [Member]                          
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition           8 months 8 days              
Maximum [Member]                          
Finite-Lived Intangible Asset, Useful Life           10 years       10 years      
Maximum [Member] | Performance Stock Units [Member]                          
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition                   1 year 6 months      
Transferred at Point in Time [Member]                          
Percentage of Revenue           16.00%   34.00%   25.00% 33.00%    
Transferred over Time [Member]                          
Percentage of Revenue           84.00%   66.00%   75.00% 67.00%