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CONDENSED STATEMENTS OF CASH FLOWS - USD ($)
 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Cash flows from operating activities:    
Net income $ 252,901 $ 330,812
Adjustments to reconcile net income to net cash provided by operating activities:    
Amortization of bond discount (131,190) (146,697)
Depreciation and amortization 281,100 291,576
Operating lease right-of-use asset, net 0 2,494
Stock-based compensation 73,228 73,892
Changes in operating assets and liabilities:    
Accounts receivable, net 654,353 375,116
Other current assets 29,773 (127,557)
Unexpired subscription revenue 20,652 709,902
Accounts payable (128,092) (69,066)
Accrued expenses 532,937 768,982
Net cash provided by operating activities 1,585,662 2,209,454
Cash flows from investing activities:    
Proceeds from held-to-maturity securities 2,695,000 2,850,000
Purchase of held-to-maturity securities (3,918,108) (7,898,319)
Purchase of property and equipment (215,573) (278,039)
Net cash used in investing activities (1,438,681) (5,326,358)
Cash flows from financing activities:    
Proceeds from exercise of stock options 96,935 0
Net cash provided by financing activities 96,935 0
Net increase (decrease) in cash and cash equivalents 243,916 (3,116,904)
Cash and cash equivalents at beginning of period 6,674,473 11,004,937
Cash and cash equivalents at end of period $ 6,918,389 $ 7,888,033