Description of the Business - Narrative (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($) segment shares	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 30, 2020 USD ($)
Description Of The Business [Line Items]
Number of reportable segments | segment	1
Net (loss) income	$ 201,326	$ (25,876)	$ (11,156)
Net cash flows in operations	7,857	(797)	(27,553)
Cash and cash equivalents	55,774	79,733	$ 90,626
Unused borrowing capacity	1,000
Accumulated deficit	523,063	322,106
Revolving Credit Facility
Description Of The Business [Line Items]
Unused borrowing capacity	1,000	$ 5,400
Maximum borrowing capacity				$ 50,000
Debt instrument, covenants, liquidity threshold				$ 25,000
Unsecured Convertible Notes, Due 2026
Description Of The Business [Line Items]
Aggregate principal amount	$ 150,000
BuzzFeed, Inc.
Description Of The Business [Line Items]
Number of shares issued in exchange for each share (in shares) | shares	0.306
BuzzFeed, Inc. | Class A Common Stock, $0.0001 par value per share
Description Of The Business [Line Items]
Number of common shares issued (in shares) | shares	30,880,000
CM Partners, LLC
Description Of The Business [Line Items]
Percentage of membership interests acquired	100.00%