The following table shows the reconciliation of net income to EBITDA and Adjusted EBITDA for the periods indicated:
| Year Ended December 31, | | Six Months Ended June 30, | |
| (in thousands) | 2019 | 2018 | 2020 | 2019 |
| Net income (loss) | $ 1,025,378 | $ 1,025,378 | $ 1,025,378 | $ 1,025,378 |
| Add: | | | | |
| Interest expense | 1,025,378 | 1,025,378 | 1,025,378 | 1,025,378 |
| Income tax provision | 1,025,378 | 1,025,378 | 1,025,378 | 1,025,378 |
| Depreciation and amortization | 1,025,378 | 1,025,378 | 1,025,378 | 1,025,378 |
| EBITDA | 1,025,378 | 1,025,378 | 1,025,378 | 1,025,378 |
| Add: | | | | |
| Non-cash stock-based compensation | 1,025,378 | 1,025,378 | 1,025,378 | 1,025,378 |
| Other non-recurring items | 1,025,378 | 1,025,378 | 1,025,378 | 1,025,378 |
| Adjusted EBITDA | $ 1,025,378 | $ 1,025,378 | $ 1,025,378 | $ 1,025,378 |