Revenue Recognition and Contracts with Customers - Disaggregation (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020
Revenue:
Revenues	$ 33,408	$ 27,205	$ 64,459	$ 50,378
Equipment
Revenue:
Revenues	22,380	19,016	43,207	34,914
Intrusion and access alarm
Revenue:
Revenues	10,767	8,235	20,563	15,560
Door locking devices
Revenue:
Revenues	11,613	10,781	22,644	19,354
Services
Revenue:
Revenues	$ 11,028	$ 8,189	$ 21,252	$ 15,464