Deposit-Type Contracts (Narrative) (Details)	12 Months Ended
Dec. 31, 2016
Security National Life Insurance Company [Member]
Premiums, Percentage Assumed to Net	100.00%

Percentage of assumed premiums earned by the entity to net premiums earned.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 235
-Section S99
-Paragraph 2
-Subparagraph (SX 210.12-17)
-URI http://asc.fasb.org/extlink&oid=34713774&loc=d3e574992-122915

Name:	us-gaap_PremiumsPercentageAssumedToNet
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration