Organization, Consolidation, Basis of Presentation, Business Description and Accounting Policies [Text Block]: Deposit Contracts, Policy (Details)	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Minimum
Liability for Policyholder Contract Deposits, Interest Rate	3.00%	3.00%	3.00%
Maximum
Liability for Policyholder Contract Deposits, Interest Rate	6.00%	6.00%	7.00%

Rate of interest credited to policyholder deposits.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.13(b))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 40
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=6482852&loc=d3e14931-158439

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant