Deconsolidations, Discontinued Operations and Liquidation Mendota Discontinued Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Jun. 30, 2018
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Statutory Accounting Practices, Statutory Capital and Surplus, Balance	$ 2,662	$ 4,168	$ 28,600
Restricted cash	5,000	0
Liability for Unpaid Claims and Claims Adjustment Expense, Reported Claims, Amount			2,500
Disposal Group, Including Discontinued Operation, Consideration			$ 1,700
Income (Loss) from Individually Significant Component Disposed of or Held-for-sale, Excluding Discontinued Operations, before Income Tax	0	(494)
(Loss) gain on disposal of discontinued operations, net of taxes	(7,136)	$ 1,017
Other Segments [Member] | Sale of Subsidiary Gain (Loss) [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
(Loss) gain on disposal of discontinued operations, net of taxes	$ (8,471)