Investments - Schedule of Unrealized Loss on Investments (Details) $ in Thousands	Jun. 30, 2019 USD ($) security	Dec. 31, 2018 USD ($) security
U.S. Government and Agency Securities
Schedule of Available-for-sale Securities
Available-for-sale Securities	$ 118,008	$ 98,975
Less Than Twelve Months
Number of securities \| security	35	45
Gross unrealized losses	$ 70	$ 111
Fair value	$ 27,891	$ 28,464
Twelve Months or More
Number of securities \| security	48	55
Gross unrealized losses	$ 298	$ 1,204
Fair value	49,848	61,264
States, Municipalities and Political Subdivisions
Schedule of Available-for-sale Securities
Available-for-sale Securities	$ 136,723	$ 144,468
Less Than Twelve Months
Number of securities \| security	5	49
Gross unrealized losses	$ 4	$ 272
Fair value	$ 4,306	$ 38,469
Twelve Months or More
Number of securities \| security	30	91
Gross unrealized losses	$ 94	$ 1,029
Fair value	24,353	68,115
Public Utilities
Schedule of Available-for-sale Securities
Available-for-sale Securities	$ 24,804	$ 23,890
Less Than Twelve Months
Number of securities \| security	3	30
Gross unrealized losses	$ 1	$ 374
Fair value	$ 187	$ 13,685
Twelve Months or More
Number of securities \| security	8	19
Gross unrealized losses	$ 61	$ 307
Fair value	3,972	7,805
Corporate Securities
Schedule of Available-for-sale Securities
Available-for-sale Securities	$ 285,138	$ 301,988
Less Than Twelve Months
Number of securities \| security	18	351
Gross unrealized losses	$ 34	$ 3,149
Fair value	$ 7,578	$ 144,769
Twelve Months or More
Number of securities \| security	122	208
Gross unrealized losses	$ 208	$ 3,010
Fair value	52,865	117,351
Mortgage-backed securities
Schedule of Available-for-sale Securities
Available-for-sale Securities	$ 242,250	$ 223,854
Less Than Twelve Months
Number of securities \| security	31	87
Gross unrealized losses	$ 252	$ 1,303
Fair value	$ 32,054	$ 88,754
Twelve Months or More
Number of securities \| security	89	135
Gross unrealized losses	$ 324	$ 2,180
Fair value	26,915	70,510
Asset-backed Securities
Schedule of Available-for-sale Securities
Available-for-sale Securities	$ 51,641	$ 64,037
Less Than Twelve Months
Number of securities \| security	2	67
Gross unrealized losses	$ 11	$ 136
Fair value	$ 1,994	$ 41,871
Twelve Months or More
Number of securities \| security	9	7
Gross unrealized losses	$ 4	$ 3
Fair value	3,084	1,372
Redeemable Preferred Stocks
Schedule of Available-for-sale Securities
Available-for-sale Securities	$ 1,759	$ 1,151
Less Than Twelve Months
Number of securities \| security	4	8
Gross unrealized losses	$ 38	$ 62
Fair value	$ 1,174	$ 711
Twelve Months or More
Number of securities \| security	2	2
Gross unrealized losses	$ 69	$ 77
Fair value	203	8,377
Fixed Maturities
Schedule of Available-for-sale Securities
Available-for-sale Securities	$ 864,389	$ 862,345
Less Than Twelve Months
Number of securities \| security	98	642
Gross unrealized losses	$ 410	$ 5,423
Fair value	$ 75,184	$ 359,701
Twelve Months or More
Number of securities \| security	310	517
Gross unrealized losses	$ 1,060	$ 7,810
Fair value	161,840	334,794
Foreign Government
Schedule of Available-for-sale Securities
Available-for-sale Securities	$ 4,066	3,982
Less Than Twelve Months
Number of securities \| security	0
Gross unrealized losses	$ 0
Fair value	$ 0	2,978
Twelve Months or More
Number of securities \| security	2
Gross unrealized losses	$ 2
Fair value	$ 600	$ 0
Available-for-sale, Securities in Unrealized Loss Positions, Less Than Twelve Months, Qualitative Disclosure, Number of Positions \| security		5
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss		$ 16
Available-for-sale, Securities in Unrealized Loss Positions, Twelve Months or More, Qualitative Disclosure, Number of Positions \| security		0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss		$ 0

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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Available-for-sale, Securities in Unrealized Loss Positions, Less Than Twelve Months, Qualitative Disclosure, Number of Positions

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Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

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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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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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Amount of accumulated unrealized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for 12 months or longer, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
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-Name Accounting Standards Codification
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