ACQUISITIONS (Details) $ / shares in Units, shares in Thousands						3 Months Ended				6 Months Ended
	Jun. 17, 2022 USD ($) $ / shares shares	May 30, 2022 USD ($) shares	May 27, 2022 $ / shares shares	Dec. 30, 2021 USD ($)	Nov. 04, 2021 USD ($)	Jun. 30, 2022 USD ($)	Mar. 31, 2022 USD ($)	Jun. 30, 2021 USD ($)	Mar. 31, 2021 USD ($)	Jun. 30, 2022 USD ($) payment installment	Jun. 30, 2021 USD ($)	May 24, 2022	Dec. 31, 2021 USD ($)	Nov. 02, 2021
ACQUISITIONS
Adjustments to purchase price						$ 0	$ 119,000
Increase in goodwill							175,000			$ 175,000
Cash paid for acquisition										44,569,000
Fair value of contingent consideration						0				0
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Right of use assets						5,053,000				5,053,000
Goodwill						125,006,000				125,006,000			$ 106,633,000
Revenues						122,722,000		$ 101,537,000		237,507,000	$ 203,214,000
Earnings						4,581,000	2,504,000	4,634,000	$ 11,927,000	7,084,000	16,561,000
Working capital adjustment						0	$ 185,000
Pro forma Condensed Combined Financial Information
Revenues						127,492,000		118,398,000		248,322,000	236,600,000
Income before income taxes						8,225,000		$ 7,422,000		12,943,000	$ 10,561,000
FPH Group
ACQUISITIONS
Business acquisition percentage of voting interests acquired		100.00%
Purchase price		$ 42,159,000
Transaction costs related to acquisition		710,000
Cash paid for acquisition		39,359,000
Shares issued for acquisition		550,000
Number of share issued for consideration | shares			22,886
Stock price | $ / shares			$ 24.01
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Cash and cash equivalents		1,755,000
Trade receivables		3,161,000
Inventories		4,576,000
Other assets, net		174,000
Property, plant and equipment		624,000
Right of use assets		4,165,000
Intangible assets		22,611,000
Goodwill		13,314,000
Other current liabilities		(956,000)
Deferred revenue		(776,000)
Lease liabilities		(4,165,000)
Net deferred income tax liabilities		(2,324,000)
Net purchase price		$ 42,159,000
Revenues						1,925,000				1,925,000
Earnings						247,000
Number of Shares Issued in Exchange		1
FPH Group | Technology
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Intangible assets		$ 5,731,000
Estimated Life		10 years
FPH Group | Customer lists
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Intangible assets		$ 16,173,000
Estimated Life		12 years
FPH Group | Trade name
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Intangible assets		$ 707,000
Estimated Life		10 years
FPH Group | Exchangeable Shares
ACQUISITIONS
Shares issued for acquisition		$ 2,250,000
Number of share issued for consideration | shares		93,728
ThinGap and Airex
ACQUISITIONS
Purchase price	$ 16,527,000
Cash paid for acquisition	8,224,000
Shares issued for acquisition	$ 8,303,000
Number of share issued for consideration | shares	376,500
Shares subject to indemnification holdback | shares	29,631
Stock price | $ / shares	$ 22.05
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Cash and cash equivalents	$ 1,074,000
Trade receivables	1,295,000
Inventories	1,686,000
Other assets, net	636,000
Property, plant and equipment	202,000
Right of use assets	888,000
Intangible assets	6,000,000
Goodwill	6,800,000
Other current liabilities	(574,000)
Deferred revenue	(245,000)
Lease liabilities	(888,000)
Net deferred income tax liabilities	(347,000)
Net purchase price	16,527,000
Revenues						408,000
ThinGap and Airex | Business development
ACQUISITIONS
Transaction costs related to acquisition	179,000
ThinGap and Airex | Technology
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Intangible assets	$ 2,000,000
Estimated Life	12 years 6 months
ThinGap and Airex | Customer lists
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Intangible assets	$ 3,800,000
Estimated Life	10 years
ThinGap and Airex | Trade name
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Intangible assets	$ 200,000
Estimated Life	10 years
ThinGap
ACQUISITIONS
Business acquisition percentage of voting interests acquired												100.00%
Airex LLC
ACQUISITIONS
Business acquisition percentage of voting interests acquired	100.00%
ORMEC
ACQUISITIONS
Business acquisition percentage of voting interests acquired														100.00%
ALIO
ACQUISITIONS
Business acquisition percentage of voting interests acquired					100.00%
Fair value of contingent consideration					$ 4,900,000	0				0
ALIO | Accrued liabilities.
ACQUISITIONS
Fair value of contingent consideration						1,125,000				1,125,000
ALIO | Other long-term liabilities
ACQUISITIONS
Fair value of contingent consideration						3,775,000				$ 3,775,000
ORMEC and ALIO
ACQUISITIONS
Purchase price					$ 33,458,000
Spectrum Controls
ACQUISITIONS
Purchase price				$ 68,711,000
Number of remaining payments | payment										2
Amount payable at each payment										$ 12,500,000
Number of equal installments | installment										2
Percentage of remaining consideration in cash										50.00%
Percentage of remaining consideration in stock										50.00%
Spectrum Controls | Accrued liabilities.
ACQUISITIONS
Consideration remaining payable						12,444,000				$ 12,444,000			12,388,000
Spectrum Controls | Other long-term liabilities
ACQUISITIONS
Consideration remaining payable						$ 12,333,000				$ 12,333,000			$ 12,277,000