NET REVENUE - Contract assets and liabilities (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Contract assets:
Unbilled receivables	$ 4,051		$ 5,969
Total barter receivables	1,959		2,101
Contract liabilities:
Customer advances and unearned income	2,499		2,200
Reserve for audience deficiency	19,467		22,383
Unearned event income	2,292	$ 1,152
Total deferred barter revenue	$ 1,959		$ 2,101