4. Fair Value of Financial Instruments (Tables)

6 Months Ended

Dec. 31, 2018

Fair Value Disclosures [Abstract]

Fair Value Inputs

			Fair Value Measurements Using Inputs Considered as
	Fair Value at December 31, 2018		Level 1		Level 2		Level 3
Assets:
Cash and cash equivalents	$	1,358,100	$	1,358,100	$	-	$	-
Available for sale securities		307,800		307,800		-		-
Total	$	1,665,900	$	1,665,900	$	-	$	-
Liabilities:
Contingent consideration	$	408,000	$	-	$	-	$	408,000

			Fair Value Measurements Using Inputs Considered as
	Fair Value at June 30, 2018		Level 1		Level 2		Level 3
Assets:
Cash and cash equivalents	$	1,053,100	$	1,053,100	$	-	$	-
Available for sale securities		314,700		314,700		-		-
Total	$	1,367,800	$	1,367,800	$	-	$	-
Liabilities:
Contingent consideration	$	408,000	$	-	$	-	$	408,000

Changes to Level 3 Financial Liabilities

	December 31, 2018		December 31, 2017
Beginning balance	$	408,000	$	297,000
Payments		-		(142,700	)
Ending balance	$	408,000	$	154,300

Investments in Marketable Securitites

	Cost		Fair Value		Unrealized Holding Gain (Loss)
At December 31, 2018:
Available for sale:
Equity securities	$	48,700	$	67,100	$	18,400
Mutual funds		260,500		240,700		(19,800	)
	$	309,200	$	307,800	$	(1,400	)

	Cost		Fair Value		Unrealized Holding Gain (Loss)
At June 30, 2018:
Available for sale:
Equity securities	$	45,700	$	67,800	$	22,100
Mutual funds		267,800		246,900		(20,900	)
	$	313,500	$	314,700	$	1,200