Organization, Consolidation, Basis of Presentation, Business Description and Accounting Policies [Text Block] (Details) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
	Aug. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Cash paid in acquisitions of noncontrolling interests		$ 0	$ 18,111	$ 1,734
Other Assets
Property, Plant and Equipment, Net		2,786	2,029
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment		$ 4,188	3,348
GeneveAffiliatedEntityMember
EntityCommonStockOutstandingOwnershipPercent		61.00%
AMICSubsidiariesMember
Noncontrolling Interest, Ownership Percentage by Parent				92.00%	90.00%
Cash paid in acquisitions of noncontrolling interests	$ 18,111
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Changes, Purchase of Interest by Parent	$ 2,200	$ 0	$ 2,200	$ 199