BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Warranty, Accrued Liabilities, and Basic and Diluted Income per Share (Details) - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Changes in the reserve for product warranty claims
Warranty reserve at beginning of the year	$ 2,139	$ 2,160	$ 1,869
Warranty reserves acquired			45
Settlements	(272)	(296)	(66)
Warranty expenditures	196	243	409
Effect of foreign currency translation	(97)	32	(97)
Warranty reserve at end of year	1,966	2,139	2,160
ACCRUED LIABILITIES
Compensation and fringe benefits	13,134	17,251
Accrued business acquisition consideration		12,638
Warranty reserve	1,966	2,139	$ 2,160
Income taxes payable	1,472	2,483
Operating lease liabilities - current	$ 5,088	$ 5,142
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Accrued liabilities	Accrued liabilities
Finance lease obligations - current	$ 448	$ 412
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Accrued liabilities	Accrued liabilities
Contract liabilities	$ 2,292	$ 2,137
Contingent consideration - current		7,720
Other accrued expenses	5,821	6,566
Accrued liabilities	30,221	$ 56,488
Restructuring and business realignment costs	$ 1,971
Restructuring charges, statement of income or comprehensive income extensible enumeration	Business development
Payment of restructuring charges	$ 1,958
Basic and Diluted Income per Share
Basic weighted average shares outstanding	16,529	15,963	15,448
Dilutive effect of potential common shares	74	309	503
Diluted weighted average shares outstanding	16,603	16,272	15,951
Stock awards excluded from the calculation of diluted income per share (in shares)	106,000	22,000	15,000
Minimum
Warranty
Warranty period	3 months
Maximum
Warranty
Warranty period	2 years