ACCRUED LIABILITIES (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
ACCRUED LIABILITIES
Compensation and fringe benefits	$ 11,305	$ 15,818
Accrued business acquisition consideration	12,416	12,500
Warranty reserve	2,326	2,160
Income taxes payable	4,737	3,934
Operating lease liabilities - current	$ 4,525	$ 4,224
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Accrued liabilities	Accrued liabilities
Finance Lease, Liability, Current	$ 386	$ 377
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Accrued liabilities	Accrued liabilities
Contract liabilities	$ 4,610	$ 4,807
Other accrued expenses	5,417	4,301
Accrued liabilities	$ 45,722	$ 48,121