Investments - Schedule of Unrealized Loss on Investments (Details) $ in Thousands	Mar. 31, 2020 USD ($) security	Dec. 31, 2019 USD ($) security
U.S. Government and Agency Securities
Less Than Twelve Months
Number of securities \| security	3	37
Gross unrealized losses	$ 2	$ 89
Fair value	$ 2,467	$ 26,372
Twelve Months or More
Number of securities \| security	22	39
Gross unrealized losses	$ 42	$ 104
Fair value	$ 13,125	$ 31,364
States, Municipalities and Political Subdivisions
Less Than Twelve Months
Number of securities \| security	19	31
Gross unrealized losses	$ 38	$ 61
Fair value	$ 13,084	$ 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	31	9
Gross unrealized losses	$ 313	$ 25
Fair value	$ 14,960	$ 4,626
Twelve Months or More
Number of securities \| security	0	2
Gross unrealized losses	$ 0	$ 1
Fair value	$ 0	$ 250
Corporate Securities
Less Than Twelve Months
Number of securities \| security	300	42
Gross unrealized losses	$ 6,948	$ 124
Fair value	$ 134,296	$ 22,435
Twelve Months or More
Number of securities \| security	10	27
Gross unrealized losses	$ 77	$ 19
Fair value	$ 2,792	$ 9,605
Mortgage-backed securities
Less Than Twelve Months
Number of securities \| security	93	89
Gross unrealized losses	$ 1,304	$ 322
Fair value	$ 53,126	$ 59,101
Twelve Months or More
Number of securities \| security	10	50
Gross unrealized losses	$ 237	$ 155
Fair value	$ 3,904	$ 12,738
Asset-backed Securities
Less Than Twelve Months
Number of securities \| security	57	15
Gross unrealized losses	$ 843	$ 34
Fair value	$ 23,749	$ 8,447
Twelve Months or More
Number of securities \| security	1	5
Gross unrealized losses	$ 6	$ 7
Fair value	$ 994	$ 1,259
Redeemable Preferred Stocks
Less Than Twelve Months
Number of securities \| security	66	0
Gross unrealized losses	$ 677	$ 0
Fair value	$ 6,116	$ 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	569	223
Gross unrealized losses	$ 10,125	$ 655
Fair value	$ 247,798	$ 135,489
Twelve Months or More
Number of securities \| security	44	128
Gross unrealized losses	$ 363	$ 291
Fair value	$ 21,165	$ 57,175
Foreign Government
Less Than Twelve Months
Number of securities \| security	0	0
Gross unrealized losses	$ 0	$ 0
Fair value	$ 0	$ 0
Twelve Months or More
Number of securities \| security	1	2
Gross unrealized losses	$ 1	$ 1
Fair value	$ 350	$ 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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