Fair Value of Financial Instruments - Carrying Value and Estimated Fair Value (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Fixed maturities
Available-for-sale securities	$ 1,719,790	$ 1,825,438
Equity securities	213,401	206,685
Mortgage loans	47,130	47,614
Fixed maturities:
Fixed maturities
Available-for-sale securities	1,719,790	1,825,438
Fair Value
Fixed maturities
Equity securities	213,401	206,685
Mortgage loans	48,815	48,932
Other long-term investments	84,090	69,305
Short-term investments	275	175
Cash and cash equivalents	132,104	87,948
Corporate-owned life insurance	10,755	8,557
Liabilities
Long term debt	46,047	50,000
Fair Value \| Fixed maturities:
Fixed maturities
Available-for-sale securities	1,719,790	1,825,443
Carrying Value
Fixed maturities
Equity securities	213,401	206,685
Mortgage loans	47,130	47,614
Other long-term investments	84,090	69,305
Short-term investments	275	175
Cash and cash equivalents	132,104	87,948
Corporate-owned life insurance	10,755	8,557
Liabilities
Long term debt	50,000	50,000
Carrying Value \| Fixed maturities:
Fixed maturities
Available-for-sale securities	$ 1,719,790	$ 1,825,438

Other Long-term Investments, Fair Value Disclosure

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Short-term Investments, Fair Value Disclosure

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Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

+ References

No definition available.

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- Definition

Fair value portion of the amount that could be realized under a life insurance contract or contracts owned by the entity, commonly known as corporate-owned life insurance (COLI) or bank-owned life insurance (BOLI).

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Amount excluding accrued interest, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454

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- Definition

Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI), classified as current.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=123594786&loc=SL75136599-209740

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Amount excluding accrued interest, after allowance for credit loss, of financing receivable.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=124255206&loc=SL82895884-210446

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- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

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