INCOME TAXES - Effective income tax reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Effective income tax rate reconciliation, amount
Computed federal income tax expense (benefit) at applicable statutory rate of 21%	$ 35,897	$ 31,499	$ 23,539
Tax credits
Research and development tax credits	(1,910)	(2,765)	(2,209)
Other	348
Other		(31)	0
Nontaxable or nondeductible expenses
Share-based payment awards	(3,364)	(1,817)	(3,001)
Section 162(m) limitation	6,967	1,927	1,685
Other	809	101	241
Effects of cross-border tax laws
Global intangible low-taxed income, net of related foreign tax credits	618	668	(652)
Foreign-derived intangible income	(3,312)	(2,790)	(2,691)
Subpart F income, net of related foreign tax credits	(906)	(1,792)	(990)
Changes in valuation allowance	(52)	0	(90)
Other adjustments	766	131	(388)
State and local income tax expense	$ 4,130	$ 3,081	$ 1,554
Effective Income Tax Rate Reconciliation, State and Local Jurisdiction, Contribution Greater than 50 Percent, Tax Effect [Extensible Enumeration]	stpr:CA, stpr:MA, stpr:MN, stpr:NJ, stpr:NY	stpr:CA, stpr:MA, stpr:MN, stpr:NJ, stpr:NY, stpr:PA	stpr:CA, stpr:MA, stpr:NJ, stpr:NY
Foreign tax effects	$ 2,340	$ 1,206	$ 676
Changes in unrecognized tax benefits	117	218	4
Total income tax expense	$ 42,448	$ 29,636	$ 17,678
Effective income tax rate reconciliation, percent
Statutory federal rate (as a percent)	21.00%	21.00%	21.00%
Tax credits
Research and development tax credits	(1.10%)	(1.80%)	(2.00%)
Other	0.20%
Other		0.00%	0.00%
Nontaxable or nondeductible expenses
Share-based payment awards	(2.00%)	(1.20%)	(2.60%)
Section 162(m) limitation	4.10%	1.30%	1.50%
Other	0.50%	0.10%	0.20%
Effects of cross-border tax laws
Global intangible low-taxed income, net of related foreign tax credits	0.40%	0.40%	(0.60%)
Foreign-derived intangible income	(2.00%)	(1.90%)	(2.40%)
Subpart F income, net of related foreign tax credits	0.50%	1.20%	0.90%
Changes in valuation allowance	0.00%	0.00%	(0.10%)
Other adjustments	0.40%	0.10%	(0.30%)
State and local income tax expense	2.30%	2.10%	1.40%
Foreign tax effects	1.40%	0.80%	0.60%
Changes in unrecognized tax benefits	0.10%	0.10%	0.00%
Effective Income Tax Rate Reconciliation, Percent, Total	24.80%	19.80%	15.80%