Segment Information (Details) - USD ($)	3 Months Ended								12 Months Ended
	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Segment Reporting Information [Line Items]
Net sales	$ 8,677,000	$ 8,467,000	$ 8,719,000	$ 7,897,000	$ 8,222,000	$ 8,581,000	$ 8,269,000	$ 8,440,000	$ 33,759,953	$ 33,512,030	$ 35,952,487
Domestic United States [Member]
Segment Reporting Information [Line Items]
Net sales									25,711,912	26,258,439	27,437,238
Europe [Member]
Segment Reporting Information [Line Items]
Net sales									1,428,245	951,441	773,129
Canada [Member]
Segment Reporting Information [Line Items]
Net sales									795,357	690,010	916,528
Latin America [Member]
Segment Reporting Information [Line Items]
Net sales									1,855,013	2,087,670	3,168,891
Middle East [Member]
Segment Reporting Information [Line Items]
Net sales									857,066	694,387	843,092
Far East [Member]
Segment Reporting Information [Line Items]
Net sales									3,107,339	2,821,895	2,803,451
Other International [Member]
Segment Reporting Information [Line Items]
Net sales									$ 5,021	$ 8,188	$ 10,158