Accumulated Other Comprehensive (Deficit) Income - Summary of Changes in Accumulated Balances in Other Comprehensive (Deficit) Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Unrealized Gain (Loss) on Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	$ (1,243)	$ 1,601	$ (19)	$ 2,387
Other comprehensive (loss) income before reclassifications	(242)	(276)	(928)	599
Amounts reclassified from AOCI	10	(815)	(528)	(2,476)
Ending Balance	(1,475)	510	(1,475)	510
Unrealized Gain (Loss) on Investments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	39	(50)	87	96
Other comprehensive (loss) income before reclassifications	19	219	(29)	73
Amounts reclassified from AOCI	0	0	0	0
Ending Balance	58	169	58	169
Foreign Currency Translation Adjustment
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(133)	(494)	(678)	(374)
Other comprehensive (loss) income before reclassifications	6	159	551	39
Amounts reclassified from AOCI	0	0	0	0
Ending Balance	(127)	(335)	(127)	(335)
AOCI Attributable to Parent
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(1,337)	1,057	(610)	2,109
Other comprehensive (loss) income before reclassifications	(217)	102	(406)	711
Amounts reclassified from AOCI	10	(815)	(528)	(2,476)
Ending Balance	$ (1,544)	$ 344	$ (1,544)	$ 344

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount after tax, before reclassification adjustments of other comprehensive income (loss).

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Amount of equity (deficit) attributable to parent. Excludes temporary equity and equity attributable to noncontrolling interest.

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Definitive Healthcare Corp. 10-Q