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Separate Accounts - Schedule of Fair Value of Separate Accounts by Major Category of Investment (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Schedule Of Fair Value Of Separate Accounts By Major Category Of Investment [Line Items]
Separate accounts assets	$ 2,195,501	$ 2,572,872
Fixed Income Securities [Member]
Schedule Of Fair Value Of Separate Accounts By Major Category Of Investment [Line Items]
Separate accounts assets	996,014	1,095,968
Equity Securities [Member]
Schedule Of Fair Value Of Separate Accounts By Major Category Of Investment [Line Items]
Separate accounts assets	1,150,848	1,431,158
Cash and Cash Equivalents [Member]
Schedule Of Fair Value Of Separate Accounts By Major Category Of Investment [Line Items]
Separate accounts assets	50,041	47,860
Due To/From Funds [Member]
Schedule Of Fair Value Of Separate Accounts By Major Category Of Investment [Line Items]
Separate accounts assets	(1,494)	(2,220)
Other [Member]
Schedule Of Fair Value Of Separate Accounts By Major Category Of Investment [Line Items]
Separate accounts assets	$ 92	$ 106

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

The fair value of the assets held by the Entity for the benefit of separate account policyholders.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-URI http://asc.fasb.org/topic&trid=2303980

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 80
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6484091&loc=d3e19268-158472

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(11))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

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