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v3.19.3.a.u2

Debt Obligations, Convertible Senior Unsecured Notes (Details) $ / shares in Units, $ in Thousands | 1 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Nov. 30, 2019 USD ($) $ / shares | Dec. 31, 2019 USD ($) $ / shares | Mar. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | Sep. 30, 2018 USD ($) | Dec. 31, 2019 USD ($) $ / shares shares | Dec. 31, 2018 USD ($) item shares | Dec. 31, 2017 USD ($)
Debt Obligations |  |  |  |  |  |  |  |
Cash paid for the exchange of convertible notes |  |  |  |  |  | $ 231,940 | $ 228,287 |
(Loss) gain on extinguishment of debt |  | $ (7,311) | $ (128) | $ (82) | $ (4,960) | (7,439) | (5,041) | $ 7,116
Total |  | 4,678,863 |  |  |  | 4,678,863 |  |
Convertible Senior Unsecured Notes |  |  |  |  |  |  |  |
Debt Obligations |  |  |  |  |  |  |  |
Principal amount |  | 300,914 |  | 270,057 |  | $ 300,914 | $ 270,057 |
Percentage of the Notes required to be repurchased if the agreement is fundamentally changed |  |  |  |  |  | 100.00% |  |
Maturity period (in years) |  |  |  |  |  | 2 years 8 months 1 day | 2 years 5 months 27 days |
Unamortized Debt Discount |  | 9,235 |  | 8,229 |  | $ 9,235 | $ 8,229 |
Unamortized Deferred Financing Fees |  | 7,527 |  | 7,060 |  | 7,527 | 7,060 |
Total |  | $ 284,152 |  | $ 254,768 |  | 284,152 | 254,768 |
Net Carrying Value, Equity Component |  |  |  |  |  | 9,962 | 9,436 |
Interest expense |  |  |  |  |  | 28,300 | 21,100 |
Interest expense related to cash coupon |  |  |  |  |  | 13,500 | 13,400 |
Debt discount |  |  |  |  |  | 7,900 | 2,900 |
Deferred fees expensed as interest expense |  |  |  |  |  | $ 6,800 | $ 4,800 |
Cost of the notes (as a percent) |  | 6.80% |  | 7.45% |  | 6.80% | 7.45% |
5.375% Convertible Notes |  |  |  |  |  |  |  |
Debt Obligations |  |  |  |  |  |  |  |
Principal amount |  | $ 1,100 |  |  |  | $ 1,100 |  |
Interest rate (as a percent) |  | 5.375% |  | 5.375% |  | 5.375% | 5.375% |
Debt instrument conversion rate |  |  |  |  |  | 5.375% |  |
5.375% Convertible Notes | First Offering |  |  |  |  |  |  |  |
Debt Obligations |  |  |  |  |  |  |  |
Conversion rate of the notes to common stock, per $1,000 principal amount of notes |  |  |  |  |  | 107.7122 |  |
Conversion price per share of common stock | $ / shares |  | $ 9.28 |  |  |  | $ 9.28 |  |
5.375% Convertible Notes | Second Offering |  |  |  |  |  |  |  |
Debt Obligations |  |  |  |  |  |  |  |
Conversion rate of the notes to common stock, per $1,000 principal amount of notes |  |  |  |  |  | 114.6568 |  |
Conversion price per share of common stock | $ / shares |  | $ 8.72 |  |  |  | $ 8.72 |  |
6.50% Convertible Notes |  |  |  |  |  |  |  |
Debt Obligations |  |  |  |  |  |  |  |
Interest rate (as a percent) |  |  |  | 6.50% |  |  | 6.50% |
Cash paid for the exchange of convertible notes |  |  |  |  |  |  | $ 99,800 |
5.25% Convertible Notes |  |  |  |  |  |  |  |
Debt Obligations |  |  |  |  |  |  |  |
Interest rate (as a percent) |  | 5.25% |  | 5.25% |  | 5.25% | 5.25% |
Cash paid for the exchange of convertible notes |  |  |  |  |  | $ 228,700 | $ 127,600 |
Number of private placements | item |  |  |  |  |  |  | 2 |
4.75% Convertible Notes |  |  |  |  |  |  |  |
Debt Obligations |  |  |  |  |  |  |  |
Principal amount | $ 264,000 |  |  |  |  |  |  |
Interest rate (as a percent) | 4.75% |  |  |  |  |  |  |
Proceeds received, net of estimated issuance costs |  |  |  |  |  | 256,500 |  |
Conversion rate of the notes to common stock, per $1,000 principal amount of notes | 56.1695 |  |  |  |  |  |  |
Conversion price per share of common stock | $ / shares | $ 17.80 |  |  |  |  |  |  |
4.75% Convertible Notes | Over-Allotment Option |  |  |  |  |  |  |  |
Debt Obligations |  |  |  |  |  |  |  |
Principal amount | $ 34,000 |  |  |  |  |  |  |
4.75% and 5.25% Convertible Notes |  |  |  |  |  |  |  |
Debt Obligations |  |  |  |  |  |  |  |
Cash paid for the exchange of convertible notes |  |  |  |  |  | $ 233,100 |  |
Common stock exchanged (in shares) | shares |  |  |  |  |  | 4,478,315 |  |
(Loss) gain on extinguishment of debt |  |  |  |  |  | $ 7,300 |  |
Inducement charge |  |  |  |  |  | 1,100 |  |
5.25% and 5.375% Convertible Notes |  |  |  |  |  |  |  |
Debt Obligations |  |  |  |  |  |  |  |
Cash paid for the exchange of convertible notes |  |  |  |  |  |  | $ 219,800 |
Common stock exchanged (in shares) | shares |  |  |  |  |  |  | 6,820,196 |
(Loss) gain on extinguishment of debt |  |  |  |  |  |  | $ 5,000 |
Inducement charge |  |  |  |  |  |  | 1,100 |
Junior subordinated notes |  |  |  |  |  |  |  |
Debt Obligations |  |  |  |  |  |  |  |
Principal amount |  | $ 154,336 |  | $ 154,336 |  | 154,336 | 154,336 |
(Loss) gain on extinguishment of debt |  |  |  |  |  |  |  | $ 7,100
Deferred fees expensed as interest expense |  |  |  |  |  | 2,000 | $ 2,100 |
Issued on July 3, 2018 | 5.25% Convertible Notes |  |  |  |  |  |  |  |
Debt Obligations |  |  |  |  |  |  |  |
Principal amount |  | $ 11,500 |  |  |  | $ 11,500 |  |
Interest rate (as a percent) |  | 5.25% |  |  |  | 5.25% |  |
Debt instrument conversion rate |  |  |  |  |  | 5.25% |  |
Issued on July 3, 2018 | 5.25% Convertible Notes | First Offering |  |  |  |  |  |  |  |
Debt Obligations |  |  |  |  |  |  |  |
Conversion rate of the notes to common stock, per $1,000 principal amount of notes |  |  |  |  |  | 86.9943 |  |
Conversion price per share of common stock | $ / shares |  | $ 11.50 |  |  |  | $ 11.50 |  |
Issued on July 3, 2018 | 5.25% Convertible Notes | Second Offering |  |  |  |  |  |  |  |
Debt Obligations |  |  |  |  |  |  |  |
Conversion rate of the notes to common stock, per $1,000 principal amount of notes |  |  |  |  |  | 89.2795 |  |
Conversion price per share of common stock | $ / shares |  | $ 11.20 |  |  |  | $ 11.20 |  |
Issued on July 20, 2018 | 5.25% Convertible Notes |  |  |  |  |  |  |  |
Debt Obligations |  |  |  |  |  |  |  |
Principal amount |  | $ 24,300 |  |  |  | $ 24,300 |  |
Interest rate (as a percent) |  | 5.25% |  |  |  | 5.25% |  |
Debt instrument conversion rate |  |  |  |  |  | 5.25% |  |
Issued on July 20, 2018 | 5.25% Convertible Notes | First Offering |  |  |  |  |  |  |  |
Debt Obligations |  |  |  |  |  |  |  |
Conversion rate of the notes to common stock, per $1,000 principal amount of notes |  |  |  |  |  | 77.8331 |  |
Conversion price per share of common stock | $ / shares |  | $ 12.85 |  |  |  | $ 12.85 |  |
Issued on July 20, 2018 | 5.25% Convertible Notes | Second Offering |  |  |  |  |  |  |  |
Debt Obligations |  |  |  |  |  |  |  |
Conversion rate of the notes to common stock, per $1,000 principal amount of notes |  |  |  |  |  | 79.8777 |  |
Conversion price per share of common stock | $ / shares |  | $ 12.52 |  |  |  | $ 12.52 |  |

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