Investments - Schedule of Unrealized Loss on Investments (Details) $ in Thousands	Sep. 30, 2020 USD ($) security	Dec. 31, 2019 USD ($) security
U.S. Government and Agency Securities
Less Than Twelve Months
Number of securities \| security	2	37
Gross unrealized losses	$ 1	$ 89
Fair value	$ 1,490	$ 26,372
Twelve Months or More
Number of securities \| security	21	39
Gross unrealized losses	$ 24	$ 104
Fair value	$ 12,126	$ 31,364
States, Municipalities and Political Subdivisions
Less Than Twelve Months
Number of securities \| security	20	31
Gross unrealized losses	$ 120	$ 61
Fair value	$ 15,811	$ 14,508
Twelve Months or More
Number of securities \| security	0	2
Gross unrealized losses	$ 0	$ 2
Fair value	$ 0	$ 1,262
Public Utilities
Less Than Twelve Months
Number of securities \| security		9
Gross unrealized losses		$ 25
Fair value		$ 4,626
Twelve Months or More
Number of securities \| security		2
Gross unrealized losses		$ 1
Fair value		$ 250
Corporate Securities
Less Than Twelve Months
Number of securities \| security	45	42
Gross unrealized losses	$ 659	$ 124
Fair value	$ 20,229	$ 22,435
Twelve Months or More
Number of securities \| security	4	27
Gross unrealized losses	$ 3	$ 19
Fair value	$ 1,004	$ 9,605
Mortgage-backed securities
Less Than Twelve Months
Number of securities \| security	51	89
Gross unrealized losses	$ 298	$ 322
Fair value	$ 27,677	$ 59,101
Twelve Months or More
Number of securities \| security	7	50
Gross unrealized losses	$ 102	$ 155
Fair value	$ 3,495	$ 12,738
Asset-backed Securities
Less Than Twelve Months
Number of securities \| security	16	15
Gross unrealized losses	$ 297	$ 34
Fair value	$ 5,523	$ 8,447
Twelve Months or More
Number of securities \| security	1	5
Gross unrealized losses	$ 30	$ 7
Fair value	$ 970	$ 1,259
Redeemable Preferred Stocks
Less Than Twelve Months
Number of securities \| security	28	0
Gross unrealized losses	$ 61	$ 0
Fair value	$ 3,075	$ 0
Twelve Months or More
Number of securities \| security	0	1
Gross unrealized losses	$ 0	$ 2
Fair value	$ 0	$ 97
Fixed Maturities
Less Than Twelve Months
Number of securities \| security	162	223
Gross unrealized losses	$ 1,436	$ 655
Fair value	$ 73,805	$ 135,489
Twelve Months or More
Number of securities \| security	33	128
Gross unrealized losses	$ 159	$ 291
Fair value	$ 17,595	$ 57,175
Foreign Government
Less Than Twelve Months
Number of securities \| security		0
Gross unrealized losses		$ 0
Fair value		$ 0
Twelve Months or More
Number of securities \| security		2
Gross unrealized losses		$ 1
Fair value		$ 600

Available For Sale Securities Continuous Unrealized Loss Position Less Than Twelve Months [Abstract]

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Available For Sale Securities Continuous Unrealized Loss Position Twelve Months or More [Abstract]

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Amount of accumulated unrealized loss on investments in debt and equity securities classified as available-for-sale that have been in a continuous loss position for twelve months or longer.

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Amount of accumulated unrealized loss on investments in debt and equity securities classified as available-for-sale that have been in a continuous loss position for less than twelve months.

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This item represents the aggregate fair value of investments in debt and equity securities categorized neither as held-to-maturity nor trading securities that have been in a continuous unrealized loss position for less than twelve months.

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- Definition

Number of investment positions in available-for-sale investments in a continuous unrealized loss position for less than one year or normal operating cycle, if longer, for which an other-than-temporary impairment (OTTI) has not been recognized in the income statement.

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Number of investment positions in available-for-sale investments that have been in a continuous unrealized loss position for greater than or equal to a year for which an other-than-temporary impairment (OTTI) has not been recognized in the income statement.

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