Stock-based Compensation (Narrative) (Details) - USD ($)	1 Months Ended	12 Months Ended
	Nov. 30, 2007	Jun. 30, 2016	Jun. 30, 2015
Stock based compensation expense		$ 97,045	$ 62,416
Deferred tax benefit related to stock based compensation		7,971	$ 5,779
Unrecognized compensation costs		$ 85,085
Period in which compensation cost will be recognized		2 years
Deferred tax benefit related to unrecognized compensation costs		$ 6,766
Options granted		3,000
Options outstanding		170,450	187,500
Dividends paid per share		$ 1.00	$ 1.00
Aggregate intrinsic value of options exercised		$ 40,981	$ 53,936
2007 Plan [Member] | Stock Options [Member]
Authorized shares under plan		400,000
Vesting period		2 years
Contractual life	10 years
Options granted		237,150
Options outstanding		163,250
2000 Plan [Member] | Stock Options [Member]
Options outstanding		7,200