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Disposal Groups, Including Discontinued Operations, Disclosure [Text Block] (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Dec. 31, 2016
Mar. 31, 2016
Disposal Group, Including Discontinued Operation, Liabilities $ 0   $ 0   $ 68  
Cash Provided by (Used in) Operating Activities, Discontinued Operations   $ 0   $ 339    
Discontinued Operation, Tax Effect of Discontinued Operation 0 0 0 7,724    
Risk Solutions Sale and Coinsurance Transaction Member | AMICSubsidiariesMember            
Aggregate Consideration Allocated To An Entity, Expressed As A Percent           8900.00%
Risk Solutions Sale and Coinsurance Transaction Member | Medical Stop-Loss Segment Member            
Disposal Group, Including Discontinued Operation, Liabilities $ 0   $ 0   $ 68  
Risk Solutions Sale and Coinsurance Transaction Member | Discontinued Operations, Disposed of by Sale            
Discontinued Operation, Tax Effect of Discontinued Operation       7,724    
Risk Solutions Sale and Coinsurance Transaction Member | Discontinued Operations, Disposed of by Sale | State and Local Jurisdiction            
Discontinued Operation, Tax Effect of Discontinued Operation       5,777    
Risk Solutions Sale and Coinsurance Transaction Member | Discontinued Operations, Disposed of by Sale | Domestic Tax Authority            
Discontinued Operation, Tax Effect of Discontinued Operation       1,947    
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount       (38,419)    
Risk Solutions Sale and Coinsurance Transaction Member | Discontinued Operations, Disposed of by Sale | Medical Stop-Loss Segment Member            
Disposal Group, Including Discontinued Operation, Consideration           $ 152,500
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax, Portion Attributable to Parent       99,934    
Discontinued Operation, Tax Effect of Discontinued Operation   $ 0   $ 7,724