Note 3. Summary of Significant Accounting policies (Details) - USD ($)	3 Months Ended		9 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	2,517,500	502,000	367,500	502,000
Net income (loss)	$ (119,076)	$ (106,856)	$ 531,623	$ (567,345)
Weighted Average Number of Shares Issued, Basic	7,551,430	7,551,430	7,551,430	7,551,430
Preferred Stock Dividends and Other Adjustments	$ 6,503	$ 0	$ 6,503	$ 0
Net Income (Loss) Available to Common Stockholders, Basic	$ (125,579)	$ (106,856)	$ 525,120	$ (567,345)
Weighted Average Number of Shares Outstanding, Basic	7,551,430	7,551,430	7,551,430	7,551,430
Incremental Common Shares Attributable to Dilutive Effect of Conversion of Preferred Stock	0	0	716,667	0
Weighted Average Number of Shares Outstanding, Diluted	7,551,430	7,551,430	8,268,097	7,551,430
Earnings Per Share, Basic	$ (0.02)	$ (0.01)	$ 0.07	$ (0.08)
Earnings Per Share, Diluted	$ (0.02)	$ (0.01)	$ 0.06	$ (0.08)
Employee Stock Option [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	367,500	502,000	367,500	502,000
Preferred Stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	2,150,000	0	0	0