Other Debt (Excluding capital lease obligation, annual maturities) (Details 2) - Non-Recourse Debt and Federal Home Loan Bank Advance $ in Thousands	Dec. 31, 2017 USD ($)
Annual Maturities of Other Debt Exclusive of Capital Lease Obligations
2018	$ 175,000
2019	50,000
2020	25,000
2021	0
2022	0
Thereafter	0
Total	$ 250,000

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

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Section 50
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