BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Property, Plant and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Property, plant and equipment
Property, plant and equipment, gross	$ 129,651	$ 118,040
Less accumulated depreciation	(72,668)	(62,612)
Property, plant and equipment, net	56,983	55,428
Depreciation expense	11,862	10,057	$ 9,139
Land
Property, plant and equipment
Property, plant and equipment, gross	979	999
Building and improvements
Property, plant and equipment
Property, plant and equipment, gross	$ 14,398	$ 14,169
Building and improvements | Minimum
Property, plant and equipment
Useful lives	5 years	5 years
Building and improvements | Maximum
Property, plant and equipment
Useful lives	39 years	39 years
Machinery, equipment, tools and dies
Property, plant and equipment
Property, plant and equipment, gross	$ 82,898	$ 79,738
Machinery, equipment, tools and dies | Minimum
Property, plant and equipment
Useful lives	3 years	3 years
Machinery, equipment, tools and dies | Maximum
Property, plant and equipment
Useful lives	15 years	15 years
Construction work in progress
Property, plant and equipment
Property, plant and equipment, gross	$ 9,582	$ 6,821
Furniture, fixtures and other
Property, plant and equipment
Property, plant and equipment, gross	$ 21,794	$ 16,313
Furniture, fixtures and other | Minimum
Property, plant and equipment
Useful lives	3 years	3 years
Furniture, fixtures and other | Maximum
Property, plant and equipment
Useful lives	10 years	10 years