Segment Information (Details 1) - 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
Respiratory care products [Member]
Segment Reporting Information [Line Items]
Net sales									9,037,704	9,105,694	9,077,370
Medical gas equipment [Member]
Segment Reporting Information [Line Items]
Net sales									17,645,413	17,660,524	19,712,286
Emergency medical products [Member]
Segment Reporting Information [Line Items]
Net sales									$ 7,076,836	$ 6,745,812	$ 7,162,831