Consolidated Condensed Statements of Cash Flows (Unaudited) - USD ($)	3 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Cash flows from operating activities:
Net income	$ 946,817	$ 554,826
Adjustments to reconcile net income to net cash used in operating activities:
Depreciation and amortization	261,164	248,500
Amortization of operating right-of-use asset	22,051	20,965
Stock compensation expense	88,246	93,432
Bad debt expense	125,000	125,000
Loss on sale of property and equipment	107,820	0
Gain on disposal of assets	(24,737)	0
(Increase) decrease in:
Accounts receivables	(258,029)	(1,154,077)
Long-term receivables, prepaid and other assets	129,335	691,245
(Decrease) increase in:
Accounts payable	(95,369)	57,515
Accrued liabilities	(165,555)	501,063
Operating lease liability	(22,051)	(20,965)
Deferred revenue	3,369	105,844
Net cash provided by operating activities	1,118,061	1,223,348
Cash flows from investing activities:
Purchase of property and equipment	0	(12,925)
Sale of property and equipment	1,374,085	0
Net cash provided by (used in) investing activities	1,374,085	(12,925)
Cash flows financing activities:
Net decrease in lines of credit	(6,000,000)	0
Common Stock buy-back	(41,276)	0
Proceeds from employee stock purchase plan	56,577	50,328
Dividends paid	(146,611)	(146,611)
Proceeds from issuance of notes payable	0	620,000
Payments on notes payable and capital leases	0	(920,754)
Net cash used in financing activities	(6,131,310)	(397,037)
Net increase (decrease) in cash and cash equivalents	(3,639,164)	813,386
Cash and cash equivalents at beginning of period	24,070,322	20,345,330
Cash and cash equivalents at end of period	20,431,158	21,158,716
Supplemental disclosure of cash flow information:
Cash paid for income taxes	172,342	25,899
Cash paid for interest	2,898	70,545
Cash paid for operating leases	$ 30,600	$ 30,600
Supplemental disclosure of non-cash investing and financing activities:
Common Stock to pay accrued liabilities (in shares)	172,500	5,405
Dividends accrued on preferred stock	$ 146,611	$ 146,611