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Debt Obligations, net (Unsecured Notes Narrative) (Details) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2022 | Mar. 31, 2021
Debt Instrument [Line Items] |  |
Loss on early extinguishment of debt | $ 1,428 | $ 0
Unsecured notes | Minimum |  |
Debt Instrument [Line Items] |  |
Percentage of principal amount of consenting notes paid as consent fees to note holders | 0.75% |
Unsecured notes | Maximum |  |
Debt Instrument [Line Items] |  |
Percentage of principal amount of consenting notes paid as consent fees to note holders | 1.00% |
Unsecured notes | 4.75% Senior Notes |  |
Debt Instrument [Line Items] |  |
Stated interest rate | 4.75% |
Unsecured notes | 4.25% Senior Notes |  |
Debt Instrument [Line Items] |  |
Stated interest rate | 4.25% |
Unsecured notes | 5.50% Senior Notes |  |
Debt Instrument [Line Items] |  |
Stated interest rate | 5.50% |

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