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Condensed Statements of Cash Flows - USD ($)
 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Operating activities    
  Net income (loss) $ 3,473,635 $ (4,861,136)
  Adjustments to reconcile net income (loss) to net cash provided by operating activities:    
      Stock-based compensation 504,676 392,985
      Depreciation and amortization 555,900 436,970
      Amortization of debt discount 24,819
      Deferred tax benefits (1,610,000)
      Goodwill impairment charges 4,427,000
  Changes in operating assets and liabilities:    
      Accounts receivable (590,613) 477,591
      Inventories (1,238,694) (183,406)
      Prepaid expenses and other current assets (266,043) (4,916)
      Other assets (24,813)
      Accounts payable and accrued expenses 148,111 (69,904)
      Accrued payroll and related expenses 327,427 (164,158)
      Net deferred revenue on shipments to distributors (42,270) 1,017
      Deferred service revenue (17,989) (18,426)
      Net change in operating lease (61,133) (46,872)
         Net cash provided by operating activities 1,183,013 386,745
Investing activities    
  Purchases of equipment (562,910) (374,538)
       Net cash used in investing activities (562,910) (374,538)
Financing activities    
  Payments on finance leases (8,291)
  Repurchase and retirement of common stock (1,176) (8,025)
  Proceeds from borrowings under bank line of credit agreement 5,630,000
  Repayments of borrowings under bank line of credit agreement (7,042,449)
  Proceeds from note payable 1,000,000 1,208,700
  Repayments of note payable (250,000) (150,000)
  Repayments of bank term loan (333,333)
  Proceeds from subordinated convertible notes payable, net of discount 168,645
  Proceeds from subordinated convertible notes payable, net of discount-related party 1,264,840
  Stock options exercised 1,862,048 73,691
       Net cash provided by financing activities 2,610,872 803,778
Net increase in cash and cash equivalents 3,230,975 815,985
Cash and cash equivalents at beginning of period 2,121,763 958,860
Cash and cash equivalents at end of period 5,352,738 1,774,845
Supplemental disclosure of cash flow information    
  Cash paid for interest 132,036 42,403
Non-cash investing and financing activities    
  Conversion of note payable 130,000
  Acquisition of intangible assets $ 1,909,433