Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(16))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 3: 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(22))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Name:	us-gaap_LongTermDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

LONG-TERM DEBT - Schedule Of Long Term Debt (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Mar. 07, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Long-term debt	$ 622,644		$ 706,225
Senior Notes \| 2017 Senior secured notes (due 2022)
Debt Instrument [Line Items]
Total long-term debt, including current portion	511,493	$ 527,500	585,823
Line Of Credit And Secured Debt \| Non-Recourse U.S. SPV Facility
Debt Instrument [Line Items]
Total long-term debt, including current portion	111,151		120,402
Line of Credit \| Revolving Credit Facility \| Senior Revolver
Debt Instrument [Line Items]
Total long-term debt, including current portion	$ 0		$ 0