8. Pension Plan (Details) - USD ($)	3 Months Ended		6 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2015	Dec. 31, 2014
Notes to Financial Statements
Service cost-benefits earned during the period	$ 12,024	$ 15,519	$ 24,048	$ 31,038
Interest cost on projected benefit obligation	32,297	29,411	64,594	58,822
Expected return on plan assets	(26,855)	(24,319)	(53,710)	(48,638)
Amortization of actuarial loss	33,566	31,208	67,132	62,416
Net periodic pension cost	$ 51,032	$ 51,819	$ 102,064	$ 103,637