CONDENSED COMBINED DEBTOR-IN-POSSESSION FINANCIAL INFORMATION - Debtors Balance Sheet (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022
ASSETS:
Cash	$ 105,595		$ 72,994	$ 80,667		$ 103,344
Accounts receivable, net of allowance for doubtful accounts	255,335		258,088
Prepaid expenses, deposits and other	71,545		70,537
Total current assets	432,475		401,619
Net property and equipment	274,739		284,681
Operating lease right-of-use assets	188,326		202,010
Radio broadcasting licenses	794,771		794,771
Goodwill	63,915		63,915
Assets held for sale	0		1,544
Software, net	109,745		129,128
Other assets, net of accumulated amortization	25,665		22,772
TOTAL ASSETS	1,889,636		1,900,440
LIABILITIES:
Accounts payable	11,911		21,742
Accrued expenses	67,023		73,519
Other current liabilities	50,943		131,031
Operating lease liabilities	39,014		37,631
Short-term borrowing	32,000		0
Long-term debt, current portion	0		1,924,023
Total current liabilities	200,891		2,187,946
Long-term debt	75,000		0
Operating lease liabilities, net of current portion	179,794		201,802
Deferred tax liabilities	94,367		101,937
Other long-term liabilities	20,788		23,508
Liabilities subject to compromise	1,931,787		0
SHAREHOLDERS' DEFICIT:
Equity (deficit)	(2,296,191)		(2,297,270)
Total shareholders’ deficit	(612,991)	$ (616,301)	(614,753)	360,574	$ 485,662	520,619
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY (DEFICIT)	1,889,636		1,900,440
Debtor-in-Possession
ASSETS:
Cash	97,562		59,989	$ 71,795		$ 88,989
Accounts receivable, net of allowance for doubtful accounts	13,624		13,918
Prepaid expenses, deposits and other	70,124		70,537
Due from affiliates	154		178
Total current assets	181,464		144,622
Investment in affiliates	174,364		184,868
Net property and equipment	274,739		284,681
Operating lease right-of-use assets	188,326		202,010
Radio broadcasting licenses	794,771		794,771
Goodwill	63,915		63,915
Assets held for sale	0		1,544
Software, net	109,745		129,128
Other assets, net of accumulated amortization	25,665		22,772
TOTAL ASSETS	1,812,989		1,828,311
LIABILITIES:
Accounts payable	11,911		21,742
Accrued expenses	66,484		73,040
Other current liabilities	50,943		131,031
Operating lease liabilities	39,014		37,631
Short-term borrowing	32,000
Long-term debt, current portion	0		1,849,518
Total current liabilities	200,352		2,112,962
Long-term debt	0		0
Operating lease liabilities, net of current portion	179,794		201,802
Deferred tax liabilities	94,367		101,937
Other long-term liabilities	20,788		23,508
Liabilities subject to compromise	1,931,787		0
SHAREHOLDERS' DEFICIT:
Equity (deficit)	(614,099)		(611,898)
Total shareholders’ deficit	(614,099)		(611,898)
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY (DEFICIT)	$ 1,812,989		$ 1,828,311