Line of credit (Notes)	12 Months Ended
Jun. 30, 2019
Line of Credit Facility [Line Items]
Debt Disclosure [Text Block]	Line of Credit On December 29, 2016, the Company entered into a credit agreement providing the Company up to an aggregate of $250,000 in cash, secured by the Company’s inventory. The Company, and its wholly owned subsidiary Sonomed, Inc., entered into an Inventory Advance Agreement as of December 29, 2016 (the "Agreement"), with CDS Business Services, Inc., doing business as Newtek Business Credit ("Newtek"). Newtek made in its discretion loans against the Company’s Eligible Inventory in an aggregate amount outstanding at any time up to the lesser of (i) fifty percent (50%) of the Inventory Value or (ii) the Inventory Advance Limit, as those terms were defined in the Agreement, which was $250,000. The credit agreement renewed annually and could be terminated upon 90 days written notice from the Company or 30 days written notice from Newtek. Interest accrued on the daily balance at the per annum rate of 5.00% above the Prime Rate, but not less than 5.0%. All interest payable under the financing documents was computed on the basis of a 360 day year for the actual number of days elapsed on the daily balance. The Company was also obligated to pay to Newtek a closing fee equal to 1.00% of the Advance Limit. Upon any renewal of the Agreement, an annual fee was due from Company equal to 1.00% of the Advance Limit. In consideration of monitoring, ledgering and other administrative functions undertaken by Newtek in connection with the Company’s inventory, and the merchant processor, Company was obligated pay Newtek a monthly collateral monitoring fee calculated by multiplying (i) seventy basis points (0.70%) (approximately an annual rate of 8.5%) (except during the existence of an Event of Default at which time it shall be 1%) by (ii) the amount of the average daily balances during the calendar month preceding the month for which the calculation is made. On June 29, 2018 the Company entered a business loan agreement with TD bank receiving a line of credit evidenced by a promissory note of $250,000. The interest is subject to change based on changes in an independent index which the Wall Street Journal Prime. The index rate at the date of the agreement is 5.000% per annum. Interest on the unpaid principal balance of the note is calculated using a rate of 0.740 percentage points over the index, adjusted if necessary for any minimum and maximum rate limitations, resulting in an initial rate of 5.740% per annum based on a year of 360 days. The interest rate was 6.24% as of June 30, 2019. The Company was required to put $250,000 in the TD bank savings account as collateral. Mr. Richard J. DePiano chairman of the Company executed a guarantee of the loan in favor of TD Bank. Upon signing the agreement the Company also authorizes TD bank to payoff the line of credit with Netwtek. The total payment was $201,575 which includes $165,000 of outstanding line of credit, $2,579 accrued interest, administrative/legal fee of $1,000, prime plus fee through July 12, 2018 of $1,895 and underminimum fees of $28,797. The underminimum fees of $28,797 was included in accrued expense as of June 30, 2018. As of June 30, 2019 and June 30, 2018, the line of credit balance was $201,575 with TD bank and $165,000 from Newtek, respectively. The line of credit interest expense was $17,000 and $37,000 for the years ended ended June 30, 2019 and 2018, respectively. The line of credit from Newtek was paid off on July 3, 2018.

Line of Credit

On December 29, 2016, the Company entered into a credit agreement providing the Company up to an aggregate of $250,000 in cash, secured by the Company’s inventory. The Company, and its wholly owned subsidiary Sonomed, Inc., entered into an Inventory Advance Agreement as of December 29, 2016 (the "Agreement"), with CDS Business Services, Inc., doing business as Newtek Business Credit ("Newtek"). Newtek made in its discretion loans against the Company’s Eligible Inventory in an aggregate amount outstanding at any time up to the lesser of (i) fifty percent (50%) of the Inventory Value or (ii) the Inventory Advance Limit, as those terms were defined in the Agreement, which was $250,000. The credit agreement renewed annually and could be terminated upon 90 days written notice from the Company or 30 days written notice from Newtek.

Interest accrued on the daily balance at the per annum rate of 5.00% above the Prime Rate, but not less than 5.0%. All interest payable under the financing documents was computed on the basis of a 360 day year for the actual number of days elapsed on the daily balance. The Company was also obligated to pay to Newtek a closing fee equal to 1.00% of the Advance Limit.

Upon any renewal of the Agreement, an annual fee was due from Company equal to 1.00% of the Advance Limit. In consideration of monitoring, ledgering and other administrative functions undertaken by Newtek in connection with the Company’s inventory, and the merchant processor, Company was obligated pay Newtek a monthly collateral monitoring fee calculated by multiplying (i) seventy basis points (0.70%) (approximately an annual rate of 8.5%) (except during the existence of an Event of Default at which time it shall be 1%) by (ii) the amount of the average daily balances during the calendar month preceding the month for which the calculation is made.

On June 29, 2018 the Company entered a business loan agreement with TD bank receiving a line of credit evidenced by a promissory note of $250,000. The interest is subject to change based on changes in an independent index which the Wall Street Journal Prime. The index rate at the date of the agreement is 5.000% per annum. Interest on the unpaid principal balance of the note is calculated using a rate of 0.740 percentage points over the index, adjusted if necessary for any minimum and maximum rate limitations, resulting in an initial rate of 5.740% per annum based on a year of 360 days. The interest rate was 6.24% as of June 30, 2019. The Company was required to put $250,000 in the TD bank savings account as collateral. Mr. Richard J. DePiano chairman of the Company executed a guarantee of the loan in favor of TD Bank. Upon signing the agreement the Company also authorizes TD bank to payoff the line of credit with Netwtek. The total payment was $201,575 which includes $165,000 of outstanding line of credit, $2,579 accrued interest, administrative/legal fee of $1,000, prime plus fee through July 12, 2018 of $1,895 and underminimum fees of $28,797. The underminimum fees of $28,797 was included in accrued expense as of June 30, 2018.

As of June 30, 2019 and June 30, 2018, the line of credit balance was $201,575 with TD bank and $165,000 from Newtek, respectively. The line of credit interest expense was $17,000 and $37,000 for the years ended ended June 30, 2019 and 2018, respectively. The line of credit from Newtek was paid off on July 3, 2018.