Quarterly report pursuant to Section 13 or 15(d)

Accounting Policies (Details Narrative)

v3.19.1
Accounting Policies (Details Narrative) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 6 Months Ended
Jan. 07, 2019
Dec. 08, 2018
Mar. 31, 2019
Apr. 01, 2018
Mar. 31, 2019
Apr. 01, 2018
Sep. 30, 2018
Dec. 31, 2017
Oct. 01, 2017
Warranty reserve     $ 91 $ 122 $ 91 $ 122 $ 101 $ 251 $ 174
Valuation allowance     (2,700)   (2,700)   (2,900)    
Deferred tax assets   $ 100 $ 2,700   $ 2,700   $ 2,900    
Number of stock option were excluded as anti-dilutive     25,000            
Number of stock option were included as dilutive     8,387,086 8,744,759 8,846,253 8,815,922      
Increase (decrease) in deferred tax assets, valuation allowance         $ (200)        
Number of common shares issued upon conversion 55,565                
Deferred contract revenue     $ 5   289        
Refund of customer deposit     0   19        
Liabilities for customer deposit     $ 0   $ 0        
Stock options expired   34,980              
Net operating loss carryforward   $ 100              
Declared Dividends       $ (262)   $ (523)      
Net decrease in basic income (loss) (in dollars per share)       $ 0.31   $ 0.30      
Net loss related to common share (in dollars per share)     $ 0.12 0.20 $ (0.08) 0.20      
Net decrease in dilutive income (loss) (in dollars per share)       $ 0.30   $ 0.29      
Adjustment in dilutive income (loss) (in dollars per share)       0.20   0.19      
Accounts Receivable [Member] | U.S. Defense Contractor [Member]                  
Concentration risk percentage         33.00%        
Accounts Receivable [Member] | U.S. Government Agencies [Member]                  
Concentration risk percentage         52.00%        
Accounts Receivable [Member] | One Large Commercial Customer [Member]                  
Concentration risk percentage         7.00%        
Accounts Receivable [Member] | All Other Customers [Member]                  
Concentration risk percentage         8.00%        
Stock Option [Member]                  
Number of stock option were excluded as anti-dilutive     25,000 60,000 25,000 60,000      
Unvested Restricted Stock Option [Member]                  
Number of stock option were excluded as anti-dilutive     216,500 66,000   66,000      
Number of stock units were incremental dilutive shares       2,321 109,143 8,649      
Number of stock option were included as dilutive       33,000 216,500 33,000      
Series C Preferred Stock [Member]                  
Number of stock option were included as dilutive       78   78      
Number of common shares issued upon conversion       325,000   325,000      
Warrant [Member]                  
Number of stock option were excluded as anti-dilutive     4,260,785 4,323,135   4,323,135      
Number of stock units were incremental dilutive shares         376,890        
Number of stock option were included as dilutive         4,260,785        
Allocated undistributed earnings       $ 0   $ 348      
Warrants And Series C Preferred Shares [Member]                  
Declared Dividends       88   178      
Allocated undistributed earnings       $ 820   $ 693