FAIR VALUE DISCLOSURES - Estimated Fair Value (Details) - USD ($)
$ in Thousands |
Dec. 31, 2020 |
Dec. 31, 2019 |
| Level 1 |
|
|
| Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract] |
|
|
| Cash and Cash Equivalents, Fair Value Disclosure |
$ 1,412,665
|
$ 405,080
|
| Restricted cash |
92,863
|
279,742
|
| Level 2 |
|
|
| Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract] |
|
|
| Credit facilities and other secured borrowings |
486,322
|
1,296,054
|
| Convertible notes |
|
180,252
|
| Carrying Value |
|
|
| Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract] |
|
|
| Cash and Cash Equivalents, Fair Value Disclosure |
1,412,665
|
405,080
|
| Restricted cash |
92,863
|
279,742
|
| Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract] |
|
|
| Credit facilities and other secured borrowings |
481,789
|
1,296,054
|
| Convertible notes |
|
140,096
|
| Fair Value |
|
|
| Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract] |
|
|
| Cash and Cash Equivalents, Fair Value Disclosure |
1,412,665
|
405,080
|
| Restricted cash |
92,863
|
279,742
|
| Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract] |
|
|
| Credit facilities and other secured borrowings |
$ 486,322
|
1,296,054
|
| Convertible notes |
|
$ 180,252
|