CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Statement of Comprehensive Income [Abstract]
Net loss	$ (22,255)	$ (61,257)	$ (51,157)
Other comprehensive (loss) income:
Foreign currency translation adjustments	(832)	193	(131)
Unrealized loss on available-for-sale securities	(224)	0	0
Unrealized gain on interest rate hedging instruments	6,550	0	0
Comprehensive loss	(16,761)	(61,064)	(51,288)
Less: Comprehensive loss attributable to Definitive OpCo prior to the Reorganization Transactions	0	(33,201)	(51,288)
Less: Comprehensive loss attributable to noncontrolling interests	(14,330)	(10,237)	0
Comprehensive loss attributable to Definitive Healthcare Corp.	$ (2,431)	$ (17,626)	$ 0