Income Taxes Income Taxes - Effect of Income Taxes on Net Income and Stockholders' Equity (Details) - Successor [Member] - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Expense (Benefit) [Roll Forward]
Income tax expense (benefit)	$ 30,709	$ 17,364	$ 9,557
Net Unrealized Losses On Securities Tax Effect	41,602	(55,906)	88,411
Valuation Allowances And Reserves Charged To Equity	13,647	71,774	73,018
Unrealized Loss on FX Tax Effect	(58,527)	(15,628)	(15,108)
Change in Retirement Benefits Tax Effect	$ 3,278	$ (240)	$ (285)

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 9
-Subparagraph (a),(b)
-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32639-109319

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(h))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Income Tax Expense (or Benefit)
-URI http://asc.fasb.org/extlink&oid=6515339

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