Statements of Cash Flows (Unaudited) - USD ($)
3 Months Ended
Jun. 30, 2021
Jun. 30, 2020
OPERATING ACTIVITIES    
Net income $ 3,579,566 $ 2,411,865
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation and amortization 140,427 129,620
Stock-based compensation 7,238 2,707
Deferred income taxes (2,868) (50,405)
Changes in operating assets and liabilities:    
Accounts receivable (1,355,557) 396,168
Inventories 230,751 (59,288)
Prepaid expenses and other assets (235,406) (30,703)
Accounts payable and other liabilities 936,243 372,463
Net cash provided by operating activities 3,300,394 3,172,427
INVESTING ACTIVITIES    
Purchases of fixed assets (25,679) 0
Purchases of marketable securities 0 0
Proceeds from maturities of marketable securities 0 0
Cash used in investing activities (25,679) 0
FINANCING ACTIVITIES    
Payment of dividends to shareholders (4,833,232) (4,835,038)
Cash used in financing activities (4,833,232) (4,835,038)
Decrease in cash and cash equivalents (1,558,517) (1,662,611)
Cash and cash equivalents at beginning of period 10,427,340 8,065,594
Cash and cash equivalents at end of period 8,868,823 6,402,983
Supplemental disclosures of cash flow information:    
Cash paid during the period for income taxes $ 0 $ 0