Revenue Recognition and Contracts with Customers (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018
Major Product Lines:
Equipment Revenues	$ 20,597	$ 19,042	$ 60,872	$ 55,926
Services	4,546	3,158	12,476	8,560
Total Revenues	25,143	22,200	73,348	64,486
Intrusion and access alarm products [Member]
Major Product Lines:
Equipment Revenues	8,113	6,859	22,928	20,011
Door locking devices [Member]
Major Product Lines:
Equipment Revenues	$ 12,484	$ 12,183	$ 37,944	$ 35,915