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Debt Obligations, net - Unsecured Notes Narrative (Details) - USD ($) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018 | Dec. 31, 2018
Debt Instrument [Line Items] |  |  |  |  |
Loss on early extinguishment of debt | $ 0 | $ 911,000 | $ 468,000 | $ 3,447,000 |
Unsecured notes | 4.75% senior notes |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt instrument, face amount | $ 675,000,000.0 |  | $ 675,000,000.0 |  |
Stated interest rates (as a percent) | 4.75% |  | 4.75% |  |
Unsecured notes | 4.625% senior notes |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt instrument, face amount | $ 400,000,000.0 |  | $ 400,000,000.0 |  |
Stated interest rates (as a percent) | 4.625% |  | 4.625% |  | 4.625%
Unsecured notes | 5.00% senior notes |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Stated interest rates (as a percent) |  |  |  |  | 5.00%
Loss on early extinguishment of debt |  |  | $ 500,000 |  |
Unsecured notes | 6.50% senior notes |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt instrument, face amount | $ 275,000,000.0 |  | $ 275,000,000.0 |  |
Stated interest rates (as a percent) | 6.50% |  | 6.50% |  | 6.50%

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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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