3. Fair Value of Financial Instruments (Tables)

9 Months Ended

Mar. 31, 2018

Fair Value Disclosures [Abstract]

Fair Value Inputs

			Fair Value Measurements Using Inputs Considered as
	Fair Value at March 31, 2018		Level 1		Level 2		Level 3
Assets:
Cash and cash equivalents	$	678,600	$	678,600	$	—	$	—
Available-for- sale securities		309,100		309,100		—		—
Total	$	987,700	$	987,700	$	—	$	—
Liabilities:
Contingent consideration	$	600,000	$	—	$	—	$	600,000

			Fair Value Measurements Using Inputs Considered as
	Fair Value at June 30, 2017		Level 1		Level 2		Level 3
Assets:
Cash and cash equivalents	$	1,025,100	$	1,025,100	$	—	$	—
Available for sale securities		295,500		295,500		—		—
Total	$	1,320,600	$	1,320,600	$	—	$	—
Liabilities:
Contingent consideration	$	297,000	$	—	$	—	$	297,000

Changes to Level 3 Financial Liabilities

	2018	2017
Beginning balance	$297,000	$346,300
Increase in contingent consideration liability	445,700	-
Payments	(142,700)	(166,100)
Ending balance	$600,000	$180,200

Investments in Marketable Securitites

	Cost	Fair Value	Unrealized Holding Gain (Loss)
At March 31, 2018:
Available for sale:
Equity securities	$45,700	$63,300	$17,600
Mutual funds	267,800	245,800	(22,000)
	$313,500	$309,100	$(4,400)

	Cost	Fair Value	Unrealized Holding Gain (Loss)
At June 30, 2017:
Available for sale:
Equity securities	$37,000	$50,800	$13,800
Mutual funds	262,000	244,700	(17,300)
	$299,000	$295,500	$(3,500)