Liability for Future Policy Benefits and Unpaid Claims Disclosure [Text Block]: Short Duration Insurance Contracts, Discounted Liabilities Table Text Block (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Short-duration Insurance Contracts, Discounted Liabilities, Aggregate Discount	$ 11,707
Group disability, life and DBL Segment Member | Group Disability Product Line
Short-Duration Contracts, Discounted Liabilities, Amount	60,724	$ 60,194
Short-duration Insurance Contracts, Discounted Liabilities, Aggregate Discount	$ 11,707	$ 11,475