Segment Information - Schedule of Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Segment Reporting Information [Line Items]
Total assets	$ 52,770	$ 70,672
Corporate, Non-Segment
Segment Reporting Information [Line Items]
Total assets	12,267	13,779
Sell-side advertising | Operating Segments
Segment Reporting Information [Line Items]
Total assets	17,934	34,354
Buy-side advertising | Operating Segments
Segment Reporting Information [Line Items]
Total assets	$ 22,569	$ 22,539