Investments - Schedule of Available-for-sale Securities Reconciliation (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Schedule of Available-for-sale Securities
Gross unrealized gains	$ 1,416
Gross unrealized loss	0
Fair Value	852,086	$ 862,345
Equity securities fair value	91,468	80,978
U.S. Government and Agency Securities
Schedule of Available-for-sale Securities
Cost or adjusted/amortized cost	94,152	100,240
Gross unrealized gains	106	50
Gross unrealized loss	829	1,315
Fair Value	93,429	98,975
Foreign Government
Schedule of Available-for-sale Securities
Cost or adjusted/amortized cost	3,988	3,993
Gross unrealized gains	38	5
Gross unrealized loss	3	16
Fair Value	4,023	3,982
States, Municipalities and Political Subdivisions
Schedule of Available-for-sale Securities
Cost or adjusted/amortized cost	138,043	145,415
Gross unrealized gains	1,356	354
Gross unrealized loss	359	1,301
Fair Value	139,040	144,468
Public Utilities
Schedule of Available-for-sale Securities
Cost or adjusted/amortized cost	25,212	24,560
Gross unrealized gains	128	11
Gross unrealized loss	282	681
Fair Value	25,058	23,890
Corporate Securities
Schedule of Available-for-sale Securities
Cost or adjusted/amortized cost	295,060	307,875
Gross unrealized gains	1,624	272
Gross unrealized loss	1,441	6,159
Fair Value	295,243	301,988
Mortgage-backed securities
Schedule of Available-for-sale Securities
Cost or adjusted/amortized cost	230,458	227,004
Gross unrealized gains	1,654	333
Gross unrealized loss	1,332	3,483
Fair Value	230,780	223,854
Asset-backed Securities
Schedule of Available-for-sale Securities
Cost or adjusted/amortized cost	62,473	64,071
Gross unrealized gains	304	105
Gross unrealized loss	43	139
Fair Value	62,734	64,037
Redeemable Preferred Stocks
Schedule of Available-for-sale Securities
Cost or adjusted/amortized cost	1,849	1,287
Gross unrealized gains	6	3
Gross unrealized loss	76	139
Fair Value	1,779	1,151
Fixed Maturities
Schedule of Available-for-sale Securities
Cost or adjusted/amortized cost	851,235	874,445
Gross unrealized gains	5,216	1,133
Gross unrealized loss	4,365	13,233
Fair Value	852,086	862,345
Mutual Fund
Schedule of Available-for-sale Securities
Equity securities fair value	56,733	50,016
Common Stock
Schedule of Available-for-sale Securities
Equity securities fair value	30,794	27,198
Nonredeemable Preferred Stocks
Schedule of Available-for-sale Securities
Equity securities fair value	$ 1,681	$ 2,005

Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118939692&loc=d3e27161-111563

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=118942338&loc=SL82898722-210454

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