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Supplemental Cash Flow Information - Non-Cash (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Mar. 31, 2020 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Nov. 15, 2019 | Jun. 10, 2014
Non-cash investing activity: |  |  |  |  |  |
Property and equipment, accrued but unpaid |  | $ 150 | $ 50 | $ 3,154 |  |
Right-of-use assets acquired in exchange for operating lease obligations |  | 4,130,000 | 9,850 | 31,148 |  |
Exchange of corporate debt securities | $ 18,300 | 0 | 0 | 18,326 |  |
Disposition of investment in Consensus |  | 112,286 | 0 | 0 |  |
Non-cash financing activity: |  |  |  |  |  |
Conversion shares issued as extinguishment cost to redeem 3.25% Convertible Notes |  | 0 | 431,952 | 0 |  |
Reacquisition of 3.25% Convertible Notes, net of tax |  | 0 | 390,526 | 0 |  |
Disposition of investment |  | 160,100 |  |  |  |
Aggregate purchase price |  | 112,300 |  |  |  |
Loss on sale on investments |  | (47,800) |  |  |  |
1.75% Convertible Notes |  |  |  |  |  |
Non-cash financing activity: |  |  |  |  |  |
Repayments of Debt |  | 112,286 | 0 | 0 |  |
1.75% Convertible Notes | Convertible Debt |  |  |  |  |  |
Non-cash financing activity: |  |  |  |  |  |
Stated interest rate |  |  |  |  | 1.75% |
4.625% Senior Notes Due in 2030 |  |  |  |  |  |
Non-cash financing activity: |  |  |  |  |  |
Repayments of Debt |  | $ 0 | $ 485,000 | $ 0 |  |
3.25% Convertible Notes | Convertible Debt |  |  |  |  |  |
Non-cash financing activity: |  |  |  |  |  |
Stated interest rate |  |  |  |  |  | 3.25%

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