Goodwill and Intangible Assets Disclosure [Text Block] (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Intangible Assets, Net (Excluding Goodwill)	$ 14,669	$ 10,122	$ 14,598	$ 10,620
Goodwill, Acquired During Period	9,124
Finite-lived Intangible Assets Acquired	5,880	$ 1,000	$ 5,500
Specialty Health Segment Member
Goodwill, Acquired During Period	9,124
Finite-lived Intangible Assets Acquired	$ 5,880
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	9 years 7 months 6 days