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Long-Term Debt, Net - Hamburg Commercial Bank AG Loan Agreement and Macquarie Loan Agreement (Details) - USD ($) $ in Thousands | 2 Months Ended | 6 Months Ended | 7 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | ---
Mar. 03, 2015 | Jun. 28, 2019 | Jun. 27, 2019 | Jul. 31, 2015 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Feb. 28, 2015
Disclosure of detailed information about borrowings [Line Items] |  |  |  |  |  |  |  |
Proceeds from borrowings |  |  |  |  | $ 43,700 | $ 15,700 | $ 280 |
Repayments of debt |  |  |  |  | $ 1,830 | 19,497 | $ 4,399 |
Hamburg Commercial Bank AG |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [Line Items] |  |  |  |  |  |  |  |
Loan Facility, Maximum borrowing capacity |  |  |  |  |  |  |  | $ 30,000
Proceeds from borrowings | $ 29,405 |  |  |  |  |  |  |
Repayments of debt |  |  | $ 20,776 |  |  |  |  |
Credit Suisse AG |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [Line Items] |  |  |  |  |  |  |  |
Repayments of debt | $ 30,000 |  |  | $ 5,000 |  |  |  |
Macquarie Bank International Limited |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [Line Items] |  |  |  |  |  |  |  |
Loan Facility, Maximum borrowing capacity |  |  |  |  |  | 13,500 |  |
Repayments of debt |  | $ 13,057 |  |  |  |  |  |
Macquarie Bank International Limited | Artful Advance |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [Line Items] |  |  |  |  |  |  |  |
Proceeds from borrowings |  |  |  |  |  | 6,000 |  |
Macquarie Bank International Limited | Longevity Advance |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [Line Items] |  |  |  |  |  |  |  |
Proceeds from borrowings |  |  |  |  |  | $ 7,500 |  |

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