XML 17 R7.htm IDEA: XBRL DOCUMENT v3.25.1
Statements of Cash Flows (Unaudited) - USD ($)
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Cash flows from operating activities:    
Net income $ 560,895 $ 925,442
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation 25,030 23,711
Net gain on marketable securities (12,350) (41,496)
Allowance for credit losses 3,772 7,649
Change in allowance for obsolete inventory (2,786) (17,000)
Deferred income taxes 38,391 70,569
(Increase) decrease in operating assets:    
Accounts receivable (127,396) (573,941)
Inventories (48,280) (38,185)
Prepaid expenses and other current assets (36,919) (15,876)
Prepaid income taxes (91,327) (24,731)
(Decrease) increase in operating liabilities:    
Accounts payable (46,753) 284,201
Accrued expenses and other current liabilities 59,803 59,275
Deferred revenue 0 (15,498)
Net cash provided by operating activities 322,080 644,120
Cash flows from investing activities:    
Acquisition of property, plant, and equipment (3,608) (21,956)
Proceeds from sale of marketable securities 6,148,493 150,000
Purchase of marketable securities (5,465,515) (793,522)
Net cash provided by (used in) investing activities 679,370 (665,478)
Cash flows from financing activities:    
Dividends paid (1,607,893) (1,148,468)
Net cash used in financing activities (1,607,893) (1,148,468)
Net decrease in cash and cash equivalents (606,443) (1,169,826)
Cash and cash equivalents at beginning of period 1,875,655 8,243,122
Cash and cash equivalents at end of period 1,269,212 7,073,296
Supplemental disclosure of cash flow information:    
Taxes paid 200,000 250,000
Supplemental disclosure of non-cash items:    
Dividends payable $ 119 $ 112