Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Name:	us-gaap_GoodwillImpairmentLoss
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Goodwill (Details) - USD ($)	3 Months Ended
Goodwill (Details) - USD ($)	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Goodwill [Line Items]
Goodwill	$ 17,922,000		$ 17,922,000
Goodwill impairment	0	$ 0
Security Solutions
Goodwill [Line Items]
Goodwill	3,000,000
Secure Networks
Goodwill [Line Items]
Goodwill	$ 14,900,000