Liability for Future Policy Benefits and Unpaid Claims Disclosure [Text Block] (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Prior Year Claims and Claims Adjustment Expense	$ (3,000)	$ (5,659)
Specialty Health Segment Member
Prior Year Claims and Claims Adjustment Expense	(1,510)	(3,778)
Specialty Health Segment Member | Health Insurance Product Line
Prior Year Claims and Claims Adjustment Expense	(930)	(2,584)
Short-duration Insurance Contracts, Incurred but Not Reported (IBNR) Claims Liability, Net	27,610
Group Disability, Life, DBL And PFL Segment Member
Prior Year Claims and Claims Adjustment Expense	(1,369)	(1,612)
Individual life annuities and other Segment Member
Prior Year Claims and Claims Adjustment Expense	(113)	(112)
Medical Stop-Loss Segment Member
Prior Year Claims and Claims Adjustment Expense	$ (8)	$ (157)