Statutory Financial Data, Risk-Based Capital and Dividend Restrictions - Summary of Statutory Basis Information (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Conifer
Statutory Accounting Practices [Line Items]
Statutory capital and surplus	$ 35,848	$ 29,539	$ 30,637
RBC authorized control level	8,873	6,676	5,390
Statutory net income (loss)	$ (6,993)	$ (2,782)	$ 387
RBC % (percentage)	404.00%	442.00%	569.00%
American Colonial
Statutory Accounting Practices [Line Items]
Statutory capital and surplus			$ 22,523
RBC authorized control level			2,809
Statutory net income (loss)			$ (2,278)
RBC % (percentage)			802.00%
White Pine
Statutory Accounting Practices [Line Items]
Statutory capital and surplus	$ 26,075	$ 32,391	$ 17,452
RBC authorized control level	6,224	6,583	2,978
Statutory net income (loss)	$ (13,737)	$ (1,209)	$ 784
RBC % (percentage)	419.00%	492.00%	585.00%

Statutory Accounting Practices, Risk Based Capital, Percentage

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- Definition

Statutory Accounting Practices, Risk Based Capital Requirements, Authorized Control Level

+ References

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- 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.

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- Definition

The amount of statutory capital and surplus (stockholders' equity) as of the balance sheet date using prescribed or permitted statutory accounting practices (rather than GAAP, if different) of the state or country.

+ References

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(a)(23)(c))
-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 505
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6486098&loc=d3e24708-158529

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- Definition

Amount of net income for the period determined using accounting principles prescribed or permitted by insurance regulators.

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