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Reconciliation of Net Income to Adjusted EBITDA (Detail) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2020 | [1] | Sep. 30, 2020 | [1] | Jun. 30, 2020 | [1] | Mar. 31, 2020 | [1] | Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Net income (loss) |  | $ (239,674) | $ (148,036) | $ (170,816) | $ (59,422) | $ 26,839 | $ 31,955 | $ 101,861 | $ 33,193 | $ (617,948) | [1] | $ 193,848 | $ 215,305
Add (deduct): |  |  |  |  |  |  |  |  |  |  |  |  |
Income taxes |  |  |  |  |  |  |  |  |  | (309,376) |  | 79,912 | 95,429
Interest expense | [2] |  |  |  |  |  |  |  |  | 129,871 |  | 99,941 | 109,994
Loss on debt amendments and refinancing |  |  |  |  |  |  |  |  |  |  |  |  | 1,484
Other income | [3] |  |  |  |  |  |  |  |  | 62,369 |  | (22,441) | (18,472)
Distributions and other cash distributions from equity investees |  |  |  |  |  |  |  |  |  | 25,430 |  | 53,366 | 30,143
Depreciation and amortization |  |  |  |  |  |  |  |  |  | 259,776 |  | 261,155 | 261,162
Impairment of long-lived and other assets |  |  |  |  |  |  |  |  |  | 152,706 |  | 57,001 | 32,372
(Gain) loss on disposal of assets and other |  |  |  |  |  |  |  |  |  | (8,923) |  | 12,008 | 38,702
Non-cash rent expense |  |  |  |  |  |  |  |  |  | 2,357 |  | (4,360) |
Deferred lease expenses |  |  |  |  |  |  |  |  |  |  |  |  | (1,320)
Amortization of long-term prepaid rents |  |  |  |  |  |  |  |  |  |  |  |  | 2,382
Share based awards compensation expense |  |  |  |  |  |  |  |  |  | 19,404 |  | 14,615 | 14,336
Adjusted EBITDA | [4] |  |  |  |  |  |  |  |  | (276,880) |  | 745,045 | 781,517
Non-cash distributions from other equity investee |  |  |  |  |  |  |  |  |  | 12,915 |  |  |
Restructuring costs |  |  |  |  |  |  |  |  |  | 20,369 |  |  |
Digital Cinema Implementation Partners |  |  |  |  |  |  |  |  |  |  |  |  |
Add (deduct): |  |  |  |  |  |  |  |  |  |  |  |  |
Distributions and other cash distributions from equity investees | [5] |  |  |  |  |  |  |  |  | 10,383 |  | 23,696 | 5,799
Other Investees |  |  |  |  |  |  |  |  |  |  |  |  |
Add (deduct): |  |  |  |  |  |  |  |  |  |  |  |  |
Distributions and other cash distributions from equity investees | [6] |  |  |  |  |  |  |  |  | 15,047 |  | $ 29,670 | $ 24,344
Other Equity Investees |  |  |  |  |  |  |  |  |  |  |  |  |
Add (deduct): |  |  |  |  |  |  |  |  |  |  |  |  |
Non-cash distributions from other equity investee | [7] |  |  |  |  |  |  |  |  | $ (12,915) |  |  |
[1] | Quarterly results during the year ended December 31, 2020 were impacted by the COVID-19 pandemic (see Note 3) as well as impairment recorded (see Notes 1 and 11).
[2] | Includes amortization of debt issue costs.
[3] | Includes interest income, foreign currency exchange gain (loss), interest expense – NCM and equity in income of affiliates and excludes distributions from NCM.
[4] | Distributions from equity investees are reported entirely within the U.S. operating segment.
[5] | See discussion of cash distributions from DCIP, which were recorded as a reduction of the Company’s investment in DCIP, at Note 9. These distributions are reported entirely within the U.S. operating segment.
[6] | Reflects cash distributions received from equity investees, other than those from DCIP noted above, that were recorded as a reduction of the respective investment balances (see Notes 8 and 9). These distributions are reported entirely within the U.S. operating segment.
[7] | Reflects non-cash distribution of projectors from DCIP (see Note 9). These distributions are reported entirely within the U.S. operating segment.

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