CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Statement [Abstract]
Revenue		$ 222,653	$ 166,154	$ 118,317
Cost of revenue:
Cost of revenue exclusive of amortization		25,866	19,421	11,085
Amortization		16,759	21,268	19,383
Gross profit		180,028	125,465	87,849
Operating expenses:
Sales and marketing		89,585	56,387	34,332
Product development		34,890	18,565	11,062
General and administrative		48,781	30,528	12,927
Depreciation and amortization		40,145	38,679	40,197
Transaction, integration and restructuring expenses		7,890	6,287	3,776
Total operating expenses		221,291	150,446	102,294
Loss from operations		(41,263)	(24,981)	(14,445)
Other income (expense), net:
Other income (expense), net:		10,236	143	(222)
Interest expense, net		(8,413)	(25,871)	(36,490)
Loss on extinguishment of debt		0	(9,873)	0
Total other income (expense), net		1,823	(35,601)	(36,712)
Loss before income taxes		(39,440)	(60,582)	(51,157)
Benefit from (provision for) income taxes		17,185	(675)	0
Net loss		(22,255)	(61,257)	(51,157)
Less: Net loss attributable to Definitive OpCo prior to the Reorganization Transactions		0	(33,343)	(51,157)
Less: Net loss attributable to noncontrolling interests		(16,218)	(10,237)	0
Net loss attributable to Definitive Healthcare Corp.		$ (6,037)	$ (17,677)	$ 0
Net loss per share of Class A Common Stock:
Basic and diluted		$ (0.06)	$ (0.19)
Basic and diluted		$ (0.06)	$ (0.19)
Weighted average Common Stock outstanding:
Basic and diluted	[1]	101,114,105	91,916,151
Basic and diluted	[1]	101,114,105	91,916,151

[1] Basic and diluted net loss per share of Class A Common Stock is applicable only for the year ended December 31, 2022 and for the period from September 15, 2021 through December 31, 2021, which is the period following the IPO and related Reorganization Transactions. See Note 20 for the number of shares used in the computation of net loss per share of Class A Common Stock and the basis for the computation of net loss per share.