Segment Information - Segment information - Summary of Reported Segment Revenue, Segment Net Income, and Significant Segment Expenses (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues		$ 21,774	$ 19,056	$ 43,777	$ 36,567
Cost of revenue (exclusive of depreciation and amortization)		3,501	3,455	7,162	7,211
Personnel-related expenses		8,024	6,461	15,717	12,250
Advertising, marketing and agency expenses		287	204	511	363
Provision for bad debts		212	154	274	224
Share-based compensation expense		1,827	1,393	3,423	2,795
Occupancy expenses		265	324	571	630
Professional fees	[1]	1,560	961	2,611	2,166
Other segment items	[2]	700	659	1,349	1,230
Depreciation and amortization		2,647	2,377	5,197	4,647
Interest income		(339)	(314)	(647)	(679)
Income tax expense		404	745	1,483	1,309
Segment net income		2,686	2,637	6,126	4,421
Consolidated net income		$ 2,686	$ 2,637	$ 6,126	$ 4,421

[1] Professional fees for the three and six months ended June 30, 2025, include $370 of acquisition-related costs incurred in connection with the due diligence of potential strategic targets. Comparable acquisition-related costs were $0 and $7 for the three and six months ended June 30, 2024, respectively.

[2] Other segment items include primarily travel and entertainment, write-off of long-lived assets, and other selling, general and administrative expenses.