v3.22.2.2
Note 2 - Summary of Significant Accounting Policies (Details Textual) - USD ($)
1 Months Ended 2 Months Ended 3 Months Ended 4 Months Ended
Apr. 26, 2021
Sep. 23, 2020
Aug. 10, 2017
Mar. 31, 2022
Dec. 31, 2021
Nov. 30, 2021
May 31, 2022
Mar. 31, 2022
Mar. 31, 2021
Sep. 30, 2022
Nov. 12, 2021
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)       $ 3.57 $ 3.57     $ 3.57      
Net Income (Loss) Attributable to Parent, Total               $ 3,140,000 $ (3,902,000)    
Net Cash Provided by (Used in) Operating Activities, Total               497,000 (2,622,000)    
Operating Income (Loss), Total               (1,300,000) (2,358,000)    
Gain (Loss) on Extinguishment of Debt, Total               4,277,000 0    
Assets, Current, Total       $ 8,387,000 $ 5,593,000     8,387,000      
Liabilities, Current, Total       10,079,000 12,532,000     10,079,000      
Working Capital Deficit       1,700,000       1,700,000      
Accounts Receivable, Allowance for Credit Loss, Current       $ 245,000 $ 482,000     245,000      
Accounts Receivable, Credit Loss Expense (Reversal)               0 38,000    
Accounts Receivable, Allowance for Credit Loss, Writeoff               237,000      
Inventory Write-down               0 0    
Interest Costs Capitalized               0 0    
Impairment of Long-Lived Assets to be Disposed of               $ 0 $ 0    
Share-based Compensation Arrangement by Share-based Payment Award, Options and Warrants, Outstanding, Number (in shares)       1,374,639       1,374,639 1,383,489    
Share-based Compensation Arrangement by Share-based Payment Award, Options and Warrants, Outstanding, Aggregate Intrinsic Value       $ 0       $ 0 $ 0    
Weighted Average Number of Shares Outstanding, Diluted, Adjustment, Total (in shares)               135,285 0    
Payments of Dividends, Total               $ 0      
Domestic Tax Authority [Member] | Internal Revenue Service (IRS) [Member]                      
Open Tax Year               2018 2019 2020 2021      
State and Local Jurisdiction [Member]                      
Open Tax Year               2017 2018 2019 2020 2021      
Service-based Restricted Stock [Member]                      
Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements (in shares)               95,221      
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number, Ending Balance (in shares)       86,000       86,000      
Minimum [Member]                      
Property, Plant and Equipment, Useful Life (Year)               5 years      
Maximum [Member]                      
Property, Plant and Equipment, Useful Life (Year)               30 years      
Warrant Issued in Connection with Amended 2017 Credit Agreement [Member]                      
Warrants and Rights Outstanding, Term (Year)   5 years                  
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares)   1,000,000                  
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)   $ 3.75                  
Conversion from 2017 Credit Agreement Loan Concession to Common Stock [Member]                      
Debt Conversion, Forgiven Debt, Amount   $ 16,000,000.0                  
Debt Conversion, Converted Instrument, Shares Issued (in shares)   533,334                  
The 2017 Credit Agreement [Member] | East West Bank [Member]                      
Debt Instrument, Covenant, Percentage of Projected Gross Revenue Achieved         80.00% 80.00%   80.00% 70.00%    
Debt Instrument, Fee Amount                     $ 70,000
The 2017 Credit Agreement [Member] | East West Bank [Member] | Revolving Credit Facility [Member]                      
Debt Instrument, Term (Year) 10 years   3 years                
Line of Credit Facility, Maximum Borrowing Capacity   $ 1,000,000.0 $ 37,000,000.0                
Debt Instrument, Covenant, Percentage of Projected Gross Revenue Achieved         80.00% 80.00%   80.00%      
Debt Instrument, Fee Amount                     $ 70,000
Debt Instrument, Decrease, Forgiveness       $ 4,300,000              
The 2017 Credit Agreement [Member] | East West Bank [Member] | Revolving Credit Facility [Member] | Subsequent Event [Member]                      
Debt Instrument, Covenant, Percentage of Projected Gross Revenue Achieved             80.00%     70.00%  
March 2022 Convertible Note [Member]                      
Debt Instrument, Face Amount       $ 1.2       $ 1.2      
Incremental Common Shares Attributable to Dilutive Effect of Conversion of Debt Securities (in shares)               40,064