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Fair Value of Assets and Liabilities (Tables) | 6 Months Ended
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Jun. 30, 2016
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 June 30, 2016 and December 31, 2015 (in thousands):
|  |  | Estimated Fair Value Measurements at June 30, 2016
| Carrying Value as of June 30, 2016 |  | Total Fair Value |  | Level 1 |  | Level 2 |  | Level 3
Assets: |  |  |  |  |  |  |  |  |
Cash and cash equivalents | $ | 38,865 |  |  | $ | 38,865 |  |  | $ | 38,865 |  |  | $ | — |  |  | $ | — |
Restricted cash and investments | 80,016 |  |  | 80,016 |  |  | 75,160 |  |  | 4,856 |  |  | — |
Liabilities: |  |  |  |  |  |  |  |  |
Borrowings under senior credit facility | $ | 741,000 |  |  | $ | 741,728 |  |  | $ | — |  |  | $ | 741,728 |  |  | $ | — |
5.875% Senior Notes due 2024 | 250,000 |  |  | 253,438 |  |  | — |  |  | 253,438 |  |  | — |
5.125% Senior Notes | 300,000 |  |  | 292,500 |  |  | — |  |  | 292,500 |  |  | — |
5.875% Senior Notes due 2022 | 250,000 |  |  | 253,438 |  |  | — |  |  | 253,438 |  |  | — |
6.00% Senior Notes | 350,000 |  |  | 351,313 |  |  | — |  |  | 351,313 |  |  | — |
Non-recourse debt, Australian subsidiary | 366,164 |  |  | 366,120 |  |  | — |  |  | 366,120 |  |  | — |
Other non-recourse debt, including current portion | 42,668 |  |  | 45,047 |  |  | — |  |  | 45,047 |  |  | — |
|  |  | Estimated Fair Value Measurements at December 31, 2015
| Carrying Value as of December 31, 2015 |  | Total Fair Value |  | Level 1 |  | Level 2 |  | Level 3
Assets: |  |  |  |  |  |  |  |  |
Cash and cash equivalents | $ | 59,638 |  |  | $ | 59,638 |  |  | $ | 59,638 |  |  | $ | — |  |  | $ | — |
Restricted cash and investments | 15,654 |  |  | 15,654 |  |  | 11,536 |  |  | 4,118 |  |  | — |
Liabilities: |  |  |  |  |  |  |  |  |
Borrowings under senior credit facility | $ | 777,500 |  |  | $ | 777,500 |  |  | $ | — |  |  | $ | 777,500 |  |  | $ | — |
5.875% Senior Notes due 2024 | 250,000 |  |  | 245,783 |  |  | — |  |  | 245,783 |  |  | — |
5.125% Senior Notes | 300,000 |  |  | 285,189 |  |  | — |  |  | 285,189 |  |  | — |
5.875% Senior Notes due 2022 | 250,000 |  |  | 248,125 |  |  | — |  |  | 248,125 |  |  | — |
6.625% Senior Notes | 300,000 |  |  | 308,625 |  |  | — |  |  | 308,625 |  |  | — |
Non-recourse debt, Australian subsidiary | 204,539 |  |  | 204,531 |  |  | — |  |  | 204,531 |  |  | — |
Other non-recourse debt, including current portion | 42,592 |  |  | 43,353 |  |  | — |  |  | 43,353 |  |  | — |

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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=49121117&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=36462937&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=49121117&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=6447952&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=6957238&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=49121117&loc=d3e13433-108611 + Details
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