Revenue Recognition and Contracts with Customers (Details) - USD ($) $ in Thousands		3 Months Ended
		Sep. 30, 2018	Sep. 30, 2017
Major Product Lines:
Equipment Revenues		$ 19,590	$ 18,586
Services		3,786	2,588
Total Revenues	[1]	23,376	21,174
Intrusion and Access alarm products [Member]
Major Product Lines:
Equipment Revenues		7,092	6,511
Door locking devices [Member]
Major Product Lines:
Equipment Revenues		$ 12,498	$ 12,096

[1] All of the Company's sales originate in the United States and are shipped primarily from the Company's facilities in the United States. There were no sales into any one foreign country in excess of 10% of total Net Sales.