Borrowings under revolver and term loans.

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Cash

-URI http://asc.fasb.org/extlink&oid=6506951

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Cash Equivalents

-URI http://asc.fasb.org/extlink&oid=6507016

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 1

-Article 5

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.1)

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section 45

-Paragraph 1

-Subparagraph (a)

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 4

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- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 55

-Paragraph 8

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- Definition

Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

+ References

Reference 1: 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=35750535&loc=d3e13433-108611

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

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-Section 50

-Paragraph 12

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- Definition

Amount of debt for which creditor does not have general recourse to the debtor but rather has recourse only to the property used for collateral in the transaction or other specific property.

+ References

No definition available.

+ Details

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- Definition

The carrying amounts of cash and cash equivalent items which are restricted as to withdrawal or usage. Restrictions may include legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or entity statements of intention with regard to particular deposits; however, time deposits and short-term certificates of deposit are not generally included in legally restricted deposits. Excludes compensating balance arrangements that are not agreements which legally restrict the use of cash amounts shown on the balance sheet. This element is for unclassified presentations; for classified presentations there is a separate and distinct element.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 1

-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.1)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Fair Value of Assets and Liabilities (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014	Dec. 31, 2013
Assets:
Cash and cash equivalents	$ 68,981	$ 41,337	$ 38,063	$ 52,125
5.125% Senior Notes, Due 2023
Liabilities:
Debt Instrument, Fair Value Disclosure		0
Carrying Value
Assets:
Cash and cash equivalents	68,981	41,337
Restricted cash	19,089	12,638
Liabilities:
Borrowings under senior credit facility	697,750	365,500
Carrying Value \| 5.875% Senior Notes, Due 2024
Liabilities:
Senior Notes	250,000	250,000
Carrying Value \| 5.125% Senior Notes, Due 2023
Liabilities:
Senior Notes	300,000	300,000
Carrying Value \| 5.875% Senior Notes, Due 2022
Liabilities:
Senior Notes	250,000	300,000
Carrying Value \| 6.625% Senior Notes, Due 2021
Liabilities:
Senior Notes	300,000	250,000
Carrying Value \| Other non recourse debt including current portion
Liabilities:
Non-recourse debt	14,025	48,836
Estimate of Fair Value Measurement
Assets:
Cash and cash equivalents	68,981	41,337
Restricted cash	19,089	12,638
Liabilities:
Borrowings under senior credit facility	698,855	364,411
Estimate of Fair Value Measurement \| 5.875% Senior Notes, Due 2024
Liabilities:
Debt Instrument, Fair Value Disclosure	260,000	256,720
Estimate of Fair Value Measurement \| 5.125% Senior Notes, Due 2023
Liabilities:
Debt Instrument, Fair Value Disclosure	315,375	315,750
Estimate of Fair Value Measurement \| 5.875% Senior Notes, Due 2022
Liabilities:
Debt Instrument, Fair Value Disclosure	255,000	296,814
Estimate of Fair Value Measurement \| 6.625% Senior Notes, Due 2021
Liabilities:
Debt Instrument, Fair Value Disclosure	318,000	256,720
Estimate of Fair Value Measurement \| Other non recourse debt including current portion
Liabilities:
Non-recourse debt	14,111	52,016
Level 1 \| Estimate of Fair Value Measurement
Assets:
Cash and cash equivalents	68,981	41,337
Restricted cash	4,247	3,889
Liabilities:
Borrowings under senior credit facility	0	0
Level 1 \| Estimate of Fair Value Measurement \| 5.875% Senior Notes, Due 2024
Liabilities:
Debt Instrument, Fair Value Disclosure	0	0
Level 1 \| Estimate of Fair Value Measurement \| 5.875% Senior Notes, Due 2022
Liabilities:
Debt Instrument, Fair Value Disclosure	0	0
Level 1 \| Estimate of Fair Value Measurement \| 6.625% Senior Notes, Due 2021
Liabilities:
Debt Instrument, Fair Value Disclosure	0	0
Level 1 \| Estimate of Fair Value Measurement \| Other non recourse debt including current portion
Liabilities:
Non-recourse debt	0	0
Level 3 \| Estimate of Fair Value Measurement
Assets:
Cash and cash equivalents	0	0
Restricted cash	0	0
Liabilities:
Borrowings under senior credit facility	0	0
Level 3 \| Estimate of Fair Value Measurement \| 5.875% Senior Notes, Due 2024
Liabilities:
Debt Instrument, Fair Value Disclosure	0	0
Level 3 \| Estimate of Fair Value Measurement \| 5.875% Senior Notes, Due 2022
Liabilities:
Debt Instrument, Fair Value Disclosure	0	0
Level 3 \| Estimate of Fair Value Measurement \| 6.625% Senior Notes, Due 2021
Liabilities:
Debt Instrument, Fair Value Disclosure	0	0
Level 3 \| Estimate of Fair Value Measurement \| Other non recourse debt including current portion
Liabilities:
Non-recourse debt	0	0
Level 2 \| Estimate of Fair Value Measurement
Assets:
Cash and cash equivalents	0	0
Restricted cash	14,842	8,749
Liabilities:
Borrowings under senior credit facility	698,855	364,411
Level 2 \| Estimate of Fair Value Measurement \| 5.875% Senior Notes, Due 2024
Liabilities:
Debt Instrument, Fair Value Disclosure	260,000	256,720
Level 2 \| Estimate of Fair Value Measurement \| 5.125% Senior Notes, Due 2023
Liabilities:
Debt Instrument, Fair Value Disclosure	315,375	315,750
Level 2 \| Estimate of Fair Value Measurement \| 5.875% Senior Notes, Due 2022
Liabilities:
Debt Instrument, Fair Value Disclosure	255,000	296,814
Level 2 \| Estimate of Fair Value Measurement \| 6.625% Senior Notes, Due 2021
Liabilities:
Debt Instrument, Fair Value Disclosure	318,000	256,720
Level 2 \| Estimate of Fair Value Measurement \| Other non recourse debt including current portion
Liabilities:
Non-recourse debt	14,111	52,016
AUSTRALIA \| Subsidiary \| Carrying Value
Liabilities:
Non-recourse debt	156,442	95,714
AUSTRALIA \| Subsidiary \| Estimate of Fair Value Measurement
Liabilities:
Non-recourse debt	159,484	95,871
AUSTRALIA \| Level 1 \| Subsidiary \| Estimate of Fair Value Measurement
Liabilities:
Non-recourse debt	0	0
AUSTRALIA \| Level 3 \| Subsidiary \| Estimate of Fair Value Measurement
Liabilities:
Non-recourse debt	0	0
AUSTRALIA \| Level 2 \| Subsidiary \| Estimate of Fair Value Measurement
Liabilities:
Non-recourse debt	$ 159,484	$ 95,871