Liability for Future Policy Benefits and Unpaid Claims Disclosure [Text Block] (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2015 USD ($)
Prior Year Claims and Claims Adjustment Expense	$ (19,907)	$ (8,008)
Specialty Health Segment Member
Prior Year Claims and Claims Adjustment Expense	(10,716)	1,425
Specialty Health Segment Member | Health Insurance Product Line
Prior Year Claims and Claims Adjustment Expense	(9,000)	158
Short-duration Insurance Contracts, Incurred but Not Reported (IBNR) Claims Liability, Net	25,217
Group disability, life, DBL and PFL
Prior Year Claims and Claims Adjustment Expense	(6,332)	(3,742)
Group disability, life, DBL and PFL | NY Short-Term Disability Product Line
Short-duration Insurance Contracts, Incurred but Not Reported (IBNR) Claims Liability, Net	$ 20,361
Short-duration Insurance Contract, Cumulative Number of Reported Claims	17,000
Group disability, life, DBL and PFL | NY Short-Term Disability Product Line | Accrued Potential Risk Adjustment
Short-duration Insurance Contracts, Incurred but Not Reported (IBNR) Claims Liability, Net	$ 7,000
Group disability, life, DBL and PFL | Group Disability Product Line | Insurance Benefits, Claims And Reserves Member
Short-duration Insurance Contracts, Discounted Liabilities, Interest Accretion	$ 1,617	$ 1,706
Group disability, life, DBL and PFL | Group Disability Product Line | Minimum
Short-Duration Contracts, Discounted Liabilities, Discount Rate	3.00%	3.00%
Group disability, life, DBL and PFL | Group Disability Product Line | Maximum
Short-Duration Contracts, Discounted Liabilities, Discount Rate	6.00%	6.00%
Group disability, life, DBL and PFL | Group Disability Product Line | Short-duration Insurance Contracts, Accident Year 2013
Short-duration Insurance Contracts, Incurred but Not Reported (IBNR) Claims Liability, Net	$ 234
Short-duration Insurance Contract, Cumulative Number of Reported Claims	2,629
Claims and Claims Adjustment Expenses Assumed			$ 15,384
Individual life annuities and other Segment Member
Prior Year Claims and Claims Adjustment Expense	$ (2,575)	$ (3,084)
Medical Stop-Loss Segment Member
Prior Year Claims and Claims Adjustment Expense	$ (284)	$ (2,607)