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SEGMENT DATA (Details) - USD ($) $ in Thousands | 3 Months Ended | 4 Months Ended | 8 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Mar. 31, 2021 | May 01, 2019 | Dec. 31, 2019 | Dec. 31, 2021 | Dec. 31, 2020
Segment Reporting Information [Line Items] |  |  |  |  |
Revenue |  | $ 1,073,471 | $ 2,610,056 | $ 3,558,340 | $ 2,948,218
Operating expenses |  | 848,321 | 1,834,508 | 2,747,207 | 2,409,545
Segment Adjusted EBITDA |  | 225,150 | 775,548 | 811,133 | 538,673
Depreciation and amortization |  | (52,834) | (249,623) | (469,417) | (402,929)
Impairment charges | $ 0 | (91,382) | 0 | (57,734) | (1,738,752)
Other operating expense, net |  | (154) | (8,000) | (32,320) | (11,344)
Restructuring expenses |  | (13,242) | (51,878) | (73,262) | (100,410)
Share-based compensation expense |  | (498) | (26,411) | (23,543) | (22,862)
Operating income (loss) |  | 67,040 | 439,636 | 154,857 | (1,737,624)
Segment assets |  | 10,710,208 | 11,021,099 | 8,881,309 | 9,202,961
Capital expenditures |  | 36,197 | 75,993 | 183,372 | 85,205
Corporate and other reconciling items |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenue |  | 0 | 0 | 0 | 0
Operating expenses |  | 71,785 | 143,420 | 269,043 | 170,173
Segment Adjusted EBITDA |  | (71,785) | (143,420) | (269,043) | (170,173)
Share-based compensation expense |  | (498) | (26,411) | (23,543) | (22,862)
Segment assets |  |  | 515,580 | 403,898 | 809,638
Capital expenditures |  | 4,970 | 13,412 | 14,056 | 12,455
Eliminations |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenue |  | (2,568) | (5,036) | (13,117) | (7,756)
Operating expenses |  | (2,568) | (5,036) | (13,117) | (7,756)
Segment Adjusted EBITDA |  | 0 | 0 | 0 | 0
Share-based compensation expense |  | 0 | 0 | 0 | 0
Segment assets |  |  | (3,778) | (3,605) | (3,585)
Capital expenditures |  | 0 | 0 | 0 | 0
Intersegment revenues |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenue |  | 2,568 | 5,036 | 13,117 | 7,756
Multiplatform Group | Operating Segments |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenue |  | 903,888 | 2,174,411 | 2,489,018 | 2,206,854
Operating expenses |  | 635,205 | 1,381,073 | 1,745,680 | 1,723,449
Segment Adjusted EBITDA |  | 268,683 | 793,338 | 743,338 | 483,405
Share-based compensation expense |  | 0 | 0 | 0 | 0
Segment assets |  |  | 9,949,638 | 6,953,772 | 7,736,229
Capital expenditures |  | 25,270 | 48,096 | 130,894 | 51,559
Multiplatform Group | Intersegment revenues |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenue |  | 243 | 447 | 670 | 670
Digital Audio Group | Operating Segments |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenue |  | 102,789 | 273,389 | 834,482 | 474,371
Operating expenses |  | 88,621 | 194,366 | 573,835 | 343,598
Segment Adjusted EBITDA |  | 14,168 | 79,023 | 260,647 | 130,773
Share-based compensation expense |  | 0 | 0 | 0 | 0
Segment assets |  |  | 73,108 | 1,088,471 | 187,051
Capital expenditures |  | 4,694 | 10,505 | 23,907 | 16,086
Digital Audio Group | Intersegment revenues |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenue |  | 0 | 0 | 5,845 | 0
Audio & Media Services Group | Operating Segments |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenue |  | 69,362 | 167,292 | 247,957 | 274,749
Operating expenses |  | 55,278 | 120,685 | 171,766 | 180,081
Segment Adjusted EBITDA |  | 14,084 | 46,607 | 76,191 | 94,668
Share-based compensation expense |  | 0 | 0 | 0 | 0
Segment assets |  |  | 486,551 | 438,773 | 473,628
Capital expenditures |  | 1,263 | 3,980 | 14,515 | 5,105
Audio & Media Services Group | Intersegment revenues |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenue |  | $ 2,325 | $ 4,589 | $ 6,602 | $ 7,086

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