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Fair Value of Assets and Liabilities (Tables) | 9 Months Ended
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Sep. 30, 2017
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, 2017 and December 31, 2016 (in thousands):
|  |  | Estimated Fair Value Measurements at September 30, 2017
| Carrying Value as of September 30, 2017 |  | Total Fair Value |  | Level 1 |  | Level 2 |  | Level 3
Assets: |  |  |  |  |  |  |  |  |
Cash and cash equivalents | $ | 51,526 |  |  | $ | 51,526 |  |  | $ | 51,526 |  |  | $ | — |  |  | $ | — |
Restricted cash and investments | 24,012 |  |  | 24,012 |  |  | 20,592 |  |  | 3,420 |  |  | — |
Liabilities: |  |  |  |  |  |  |  |  |
Borrowings under senior credit facility | $ | 1,041,874 |  |  | $ | 1,047,844 |  |  | $ | — |  |  | $ | 1,047,844 |  |  | $ | — |
5.875% Senior Notes due 2024 | 250,000 |  |  | 260,943 |  |  | — |  |  | 260,943 |  |  | — |
5.125% Senior Notes | 300,000 |  |  | 305,418 |  |  | — |  |  | 305,418 |  |  | — |
5.875% Senior Notes due 2022 | 250,000 |  |  | 260,985 |  |  | — |  |  | 260,985 |  |  | — |
6.00% Senior Notes | 350,000 |  |  | 368,571 |  |  | — |  |  | 368,571 |  |  | — |
Non-recourse debt, Australian subsidiary | 549,926 |  |  | 549,926 |  |  | — |  |  | 549,926 |  |  | — |
Other non-recourse debt, including current portion | 36,381 |  |  | 37,465 |  |  | — |  |  | 37,465 |  |  | — |
|  |  | Estimated Fair Value Measurements at December 31, 2016
| Carrying Value as of December 31, 2016 |  | Total Fair Value |  | Level 1 |  | Level 2 |  | Level 3
Assets: |  |  |  |  |  |  |  |  |
Cash and cash equivalents | $ | 68,038 |  |  | $ | 68,038 |  |  | $ | 68,038 |  |  | $ | — |  |  | $ | — |
Restricted cash and investments | 22,319 |  |  | 22,319 |  |  | 19,614 |  |  | 2,705 |  |  | — |
Liabilities: |  |  |  |  |  |  |  |  |
Borrowings under senior credit facility | $ | 804,500 |  |  | $ | 795,008 |  |  | $ | — |  |  | $ | 795,008 |  |  | $ | — |
5.875% Senior Notes due 2024 | 250,000 |  |  | 247,813 |  |  | — |  |  | 247,813 |  |  | — |
5.125% Senior Notes | 300,000 |  |  | 292,125 |  |  | — |  |  | 292,125 |  |  | — |
5.875% Senior Notes due 2022 | 250,000 |  |  | 254,688 |  |  | — |  |  | 254,688 |  |  | — |
6.00% Senior Notes | 350,000 |  |  | 346,938 |  |  | — |  |  | 346,938 |  |  | — |
Non-recourse debt, Australian subsidiary | 454,222 |  |  | 454,185 |  |  | — |  |  | 454,185 |  |  | — |
Other non-recourse debt, including current portion | 36,280 |  |  | 37,550 |  |  | — |  |  | 37,550 |  |  | — |

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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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13476-108611 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13467-108611 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=75026489&loc=d3e13220-108610 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=75031198&loc=d3e14172-108612 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13433-108611 + Details
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