Nature of Operations and Basis of Presentation (Discontinued Operations) (Details) - United Life - Discontinued Operations $ in Thousands	Mar. 30, 2018 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Consideration in cash	$ 280,000
Adjustment as set forth in the definitive agreement	21
Net amount of consideration	279,979
After-tax gain on sale of discontinued operations	$ 27,307

Amount after tax of gain (loss) not previously recognized resulting from the disposal of a discontinued operation.

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