Fair Value of Financial Instruments (Carrying Value and Estimated Fair Value) (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Fixed maturities:
Available-for-sale securities	$ 1,717,039	$ 1,719,607
Trading securities	14,811	15,256
Equity securities	198,791	299,203
Mortgage loans	47,733	42,448
Fair Value
Fixed maturities:
Available-for-sale securities	1,717,047	1,719,607
Trading securities	14,811	15,256
Equity securities	198,791	299,203
Mortgage loans	48,977	43,992
Other long-term investments	62,903	78,410
Short-term investments	175	175
Cash and cash equivalents	99,604	120,722
Corporate-owned life insurance	7,670	6,777
Carrying Value
Fixed maturities:
Available-for-sale securities	1,717,039	1,719,607
Trading securities	14,811	15,256
Equity securities	198,791	299,203
Mortgage loans	47,733	42,448
Other long-term investments	62,903	78,410
Short-term investments	175	175
Cash and cash equivalents	99,604	120,722
Corporate-owned life insurance	$ 7,670	$ 6,777

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Short-term Investments, Fair Value Disclosure

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

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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.

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

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Amount, after allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement.

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Amount of investment in debt security measured at fair value with change in fair value recognized in net income (trading).

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