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Fair Value of Assets and Liabilities (Tables) | 9 Months Ended
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Sep. 30, 2018
Fair Value Disclosures [Abstract] |
Carrying value and estimated fair value of financial instruments | The following tables present the carrying values of those financial instruments and the estimated corresponding fair values at September 30, 2018 and December 31, 2017 (in thousands):
|  |  | Estimated Fair Value Measurements at September 30, 2018
| Carrying Value as of September 30, 2018 |  | Total Fair Value |  | Level 1 |  | Level 2 |  | Level 3
Assets: |  |  |  |  |  |  |  |  |
Cash and cash equivalents | $ | 66,007 |  |  | $ | 66,007 |  |  | $ | 66,007 |  |  | $ | — |  |  | $ | — |
Restricted cash and investments | 60,694 |  |  | 60,694 |  |  | 58,241 |  |  | 2,453 |  |  | — |
Liabilities: |  |  |  |  |  |  |  |  |
Borrowings under senior credit facility | $ | 1,243,919 |  |  | $ | 1,242,560 |  |  | $ | — |  |  | $ | 1,242,560 |  |  | $ | — |
5.875% Senior Notes due 2024 | 250,000 |  |  | 240,523 |  |  | — |  |  | 240,523 |  |  | — |
5.125% Senior Notes | 300,000 |  |  | 289,731 |  |  | — |  |  | 289,731 |  |  | — |
5.875% Senior Notes due 2022 | 250,000 |  |  | 252,878 |  |  | — |  |  | 252,878 |  |  | — |
6.00% Senior Notes | 350,000 |  |  | 336,872 |  |  | — |  |  | 336,872 |  |  | — |
Non-recourse debt | 357,506 |  |  | 357,736 |  |  | — |  |  | 357,736 |  |  | — |
|  |  | Estimated Fair Value Measurements at December 31, 2017
| Carrying Value as of December 31, 2017 |  | Total Fair Value |  | Level 1 |  | Level 2 |  | Level 3
Assets: |  |  |  |  |  |  |  |  |
Cash and cash equivalents | $ | 81,377 |  |  | $ | 81,377 |  |  | $ | 81,377 |  |  | $ | — |  |  | $ | — |
Restricted cash and investments | 52,168 |  |  | 52,168 |  |  | 49,884 |  |  | 2,284 |  |  | — |
Liabilities: |  |  |  |  |  |  |  |  |
Borrowings under senior credit facility | $ | 1,064,599 |  |  | $ | 1,070,514 |  |  | $ | — |  |  | $ | 1,070,514 |  |  | $ | — |
5.875% Senior Notes due 2024 | 250,000 |  |  | 262,095 |  |  | — |  |  | 262,095 |  |  | — |
5.125% Senior Notes | 300,000 |  |  | 303,918 |  |  | — |  |  | 303,918 |  |  | — |
5.875% Senior Notes due 2022 | 250,000 |  |  | 258,338 |  |  | — |  |  | 258,338 |  |  | — |
6.00% Senior Notes | 350,000 |  |  | 362,835 |  |  | — |  |  | 362,835 |  |  | — |
Non-recourse debt | 393,737 |  |  | 394,671 |  |  | — |  |  | 394,671 |  |  | — |

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- Definition Tabular disclosure of the fair value of financial instruments, including financial assets and financial liabilities, and the measurements of those instruments, assets, and liabilities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=109250915&loc=d3e13467-108611 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258 + Details
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