Related Party Transactions - Additional Information (Details) - USD ($)		3 Months Ended		6 Months Ended		12 Months Ended
	Dec. 02, 2024	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Dec. 31, 2024	Jan. 23, 2025
Related Party Transaction [Line Items]
Cost of revenues		$ 51,164,000	$ 26,701,000	$ 95,324,000	$ 50,670,000
Related party payables		18,679,000		18,679,000		$ 4,795,000
Related party receivable		6,826,000		6,826,000		2,900,000
Revolving credit facility
Related Party Transaction [Line Items]
Related party payables							$ 135,000,000
Amount of revolving loans paid		15,000,000
Line of credit facility				120,000,000		$ 0
Related Party [Member]
Related Party Transaction [Line Items]
Cost of revenues		323,000	53,000	600,000	53,000
Interest expense on related party debt		2,815,000	6,202,000	4,628,000	12,403,000
Related Party [Member] \| Revolving credit facility
Related Party Transaction [Line Items]
Interest expense on related party debt		100,000		200,000
Related Party [Member] \| Parent
Related Party Transaction [Line Items]
Selling and marketing		0		0
Revenue		300,000	600,000	100,000	200,000
Cost of revenues		300,000	100,000	600,000	100,000
Related party, amount of transaction			20,900,000		27,000,000
Related Party [Member] \| Parent \| Revolving credit facility \| Unsecured Debt
Related Party Transaction [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 250,000,000
Debt instrument, term	5 years
Fees related to Credit Facility		1,900,000		1,900,000
Related Party [Member] \| Long-term debt [Member] \| Parent
Related Party Transaction [Line Items]
Accrued interest expense debt				300,000
Related Party [Member] \| General and Administrative [Member]
Related Party Transaction [Line Items]
Selling and marketing		4,917,000	8,416,000	10,294,000	16,921,000
Related Party [Member] \| General and Administrative [Member] \| Parent
Related Party Transaction [Line Items]
Selling and marketing			$ 8,400,000		$ 16,900,000
Transitional Services Agreement [Member]
Related Party Transaction [Line Items]
Related party costs incurred for services provided		12,100,000		19,400,000
Amount payable to the parent for services provided		2,000,000		2,000,000
Related party payables		1,700,000		1,700,000
Related party payables		17,000,000		$ 17,000,000
Transitional Services Agreement [Member] \| Maximum [Member]
Related Party Transaction [Line Items]
Business support services				18 months
Transitional Services Agreement [Member] \| General and Administrative [Member]
Related Party Transaction [Line Items]
Related party costs incurred for services provided		4,100,000		$ 9,600,000
Reverse Transitional Services Agreement [Member]
Related Party Transaction [Line Items]
Related party receivable		$ 100,000		$ 200,000

TechTarget, Inc. 10-Q