GOODWILL, TRADE NAMES, AND OTHER INTANGIBLE ASSETS - Acquired Intangible Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Intangible assets subject to amortization:
Gross Carrying Amount	$ 82,902	$ 78,572
Accumulated Amortization	42,059	36,228
Net Carrying Amount	40,843	42,344
Intangible assets not subject to amortization:
Trade names, indefinite-lived	5,900	5,900
Databases
Intangible assets subject to amortization:
Gross Carrying Amount	33,430	30,530
Accumulated Amortization	21,125	18,375
Net Carrying Amount	12,305	12,155
Customer relationships
Intangible assets subject to amortization:
Gross Carrying Amount	47,738	47,738
Accumulated Amortization	20,649	17,581
Net Carrying Amount	27,089	30,157
Non-compete agreements
Intangible assets subject to amortization:
Gross Carrying Amount	4	304
Accumulated Amortization	3	272
Net Carrying Amount	1	32
Trade names
Intangible assets subject to amortization:
Gross Carrying Amount	30	0
Accumulated Amortization	12	0
Net Carrying Amount	18	0
Software
Intangible assets subject to amortization:
Gross Carrying Amount	1,700	0
Accumulated Amortization	270	0
Net Carrying Amount	$ 1,430	$ 0