Upon initial measurement, components of the purchase price are as follows: (Details) - USD ($)	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Business Acquisition [Line Items]
Prepaid and other current assets	$ 15,436,000	$ 2,988,000
Goodwill	10,090,000	$ 9,646,000	$ 8,101,000
Relec [Member]
Business Acquisition [Line Items]
Accounts receivable	633,000
Prepaid and other current assets	53,000
Inventories, net	994,000
Property and equipment	94,000
Customer relationships	900,000
Trade name	500,000
Accounts payable and accrued expenses	(557,000)
Net assets acquired	2,617,000
Goodwill	1,148,000
Purchase price	$ 3,765,000