The liability as of the balance sheet date to the policyholders for deposits held under the terms of insurance contracts.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 40
-Section 30
-Paragraph 16
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=49168914&loc=d3e13951-158433

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.13(a)(3))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Name:	us-gaap_PolicyholderContractDeposits
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Policyholder Liabilities - Summary of Policyholder Account Balances - (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Liability For Policyholder Account Balance [Line Items]
Policyholder account balances	$ 116,298	$ 109,823	$ 99,440
Interest Sensitive Life Contracts
Liability For Policyholder Account Balance [Line Items]
Policyholder account balances	41,478	41,078
Annuities
Liability For Policyholder Account Balance [Line Items]
Policyholder account balances	$ 74,820	$ 68,745