XML 15 R6.htm IDEA: XBRL DOCUMENT v3.23.2
Condensed Statements of Cash Flows - USD ($)
 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Operating activities    
  Net income (loss) $ (1,506,236) $ 445,892
  Adjustments to reconcile net income (loss) to net cash provided by operating activities:    
      Stock-based compensation 602,249 474,980
      Depreciation and amortization 418,549 394,287
      Amortization of debt discount 17,033 16,546
      Amortization of operating lease ROU Asset 233,003 297,069
      Deferred tax expenses (benefits) 166,000 116,485
  Changes in operating assets and liabilities:    
      Accounts receivable (540,561) (815,172)
      Inventories 92,541 (732,996)
      Prepaid expenses and other current assets (546) (359,891)
      Other assets (24,289) (222,248)
      Accounts payable and accrued expenses 173,401 1,137,335
      Accrued payroll and related expenses (142,244) (4,595)
      Net deferred revenue on shipments to distributors 201,214 82,156
      Deferred service revenue (1,829) 6,169
      Net change in operating lease liability (216,467) (237,253)
         Net cash (used in) provided by operating activities (528,182) 598,764
Investing activities    
  Purchases of equipment and intangible assets (1,103,592) (560,079)
       Net cash used in investing activities (1,103,592) (560,079)
Financing activities    
  Common stocks repurchased and related expenses (208,425) (377,950)
  Proceeds from note payable 1,582,452
  Repayments of note payable (125,000) (250,000)
  Proceeds from stock options exercised 190,315 81,531
       Net cash provided by (used in) financing activities 1,439,342 (546,419)
Net decrease in cash and cash equivalents (192,432) (507,734)
Cash and cash equivalents at beginning of period 3,623,469 6,095,886
Cash and cash equivalents at end of period 3,431,037 5,588,152
Supplemental disclosure of cash flow information    
Cash paid for interest 70,934 81,386
Supplemental disclosure of non-cash activities    
  Payroll tax liability for retired restricted stock 115,215
  Property acquired under operating lease $ 3,851,195