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Investments (Tables)
 12 Months Ended
Dec. 31, 2021
Investments Including Short Term And Cash And Cash Equivalents [Abstract]  
Investments Including Short Term And Cash And Cash Equivalents [Table Text Block]
Carrying Value as of December 31,
(In thousands, except for %)
2021%2020%
Cash and invested assets
Fixed maturity securities$1,470,617 89.0 %$1,489,383 89.8 %
Equity securities14,844 0.9 22,102 1.3 
Policy loans80,307 4.9 83,318 5.0 
Real estate and other long-term investments57,399 3.5 29,865 1.8 
Cash and cash equivalents27,294 1.7 34,131 2.1 
Total cash and invested assets$1,650,461 100.0 %$1,658,799 100.0 %
Debt Securities, Unrealized Gain (Loss) on Investments [Abstract]  
Unrealized Gain (Loss) on Investments [Table Text Block]
The following table represents the amortized cost, gross unrealized gains and losses and fair value of fixed maturity securities as of December 31, 2021 and 2020.
December 31, 2021
(In thousands)
Amortized
Cost		Gross
Unrealized
Gains		Gross
Unrealized
Losses		Fair
Value
Fixed maturity securities:    
Available-for-sale:    
U.S. Treasury securities$9,515 1,097 1 10,611 
U.S. Government-sponsored enterprises3,463 996 — 4,459 
States and political subdivisions356,594 28,056 692 383,958 
Corporate
Financial213,652 22,477 172 235,957 
Consumer219,223 23,658 900 241,981 
Energy76,989 7,334 68 84,255 
All Other302,141 29,855 1,181 330,815 
Residential mortgage-backed117,755 16,046 6 133,795 
Asset-backed44,322 368 14 44,676 
Foreign governments101 9 — 110 
Total fixed maturity securities$1,343,755 129,896 3,034 1,470,617 
December 31, 2020
(In thousands)
Amortized
Cost		Gross
Unrealized
Gains		Gross
Unrealized
Losses		Fair
Value
Fixed maturity securities:    
Available-for-sale:    
U.S. Treasury securities$9,529 1,797 — 11,326 
U.S. Government-sponsored enterprises3,490 1,301 — 4,791 
States and political subdivisions377,462 32,751 548 409,665 
Corporate
Financial204,160 31,000 13 235,147 
Consumer196,648 30,116 245 226,519 
Energy81,223 8,174 536 88,861 
All Other284,209 42,554 82 326,681 
Commercial mortgage-backed225 — 4 221 
Residential mortgage-backed118,144 21,819 — 139,963 
Asset-backed46,295 278 482 46,091 
Foreign governments102 16 — 118 
Total fixed maturity securities$1,321,487 169,806 1,910 1,489,383 
Schedule of Equity Securities [Table Text Block]
Most of the Company's equity securities are diversified stock and bond mutual funds.

Fair Value as of December 31,
(In thousands)
20212020
Equity securities: 
Stock mutual funds$3,571 3,174 
Bond mutual funds5,060 12,354 
Common stock990 1,143 
Non-redeemable preferred stock161 281 
Non-redeemable preferred stock fund5,062 5,150 
Total equity securities$14,844 22,102 
Unrealized Continuous Losses on Investments [Abstract]  
Schedule of Unrealized Loss on Investments [Table Text Block]
For fixed maturity security investments that have unrealized losses as of December 31, 2021 and 2020, the gross unrealized losses that have been in a continuous unrealized loss position for less than 12 months, gross unrealized losses that have been in a continuous unrealized loss position for 12 months or longer and fair value are as follows.

December 31, 2021Less than 12 monthsGreater than 12 monthsTotal
(In thousands, except for # of securities)Fair
Value		Unrealized
Losses		# of
Securities		Fair
Value		Unrealized
Losses		# of
Securities		Fair
Value		Unrealized
Losses		# of
Securities
Fixed maturity securities:        
Available-for-sale:   
U.S. Treasury securities$72 1 2 — — — 72 1 2 
States and political subdivisions21,715 692 15 — — — 21,715 692 15 
Corporate
Financial8,059 86 15 1,227 86 1 9,286 172 16 
Consumer29,494 777 28 2,419 123 1 31,913 900 29 
Energy7,381 68 8 — — — 7,381 68 8 
All Other33,384 781 30 4,523 400 4 37,907 1,181 34 
Residential mortgage-backed1,084 6 6 — — — 1,084 6 6 
Asset-backed9,078 12 11 663 2 1 9,741 14 12 
Total fixed maturity securities$110,267 2,423 115 8,832 611 7 119,099 3,034 122 
December 31, 2020Less than 12 monthsGreater than 12 monthsTotal
(In thousands, except for # of securities)Fair
Value		Unrealized
Losses		# of
Securities		Fair
Value		Unrealized
Losses		# of
Securities		Fair
Value		Unrealized
Losses		# of
Securities
Fixed maturity securities:        
Available-for-sale:   
States and political subdivisions$32,487 548 27 — — — 32,487 548 27 
Corporate
Financial1,308 13 1 — — — 1,308 13 1 
Consumer10,740 230 5 1,667 15 1 12,407 245 6 
Energy6,350 536 8 — — — 6,350 536 8 
All Other9,418 82 11 — — — 9,418 82 11 
Commercial mortgage-backed221 4 1 — — — 221 4 1 
Residential mortgage-backed83 — 1 — — — 83 — 1 
Asset-backed26,353 481 26 994 1 1 27,347 482 27 
Total fixed maturity securities$86,960 1,894 80 2,661 16 2 89,621 1,910 82 
Schedule of Fixed Maturities [Abstract]  
Investments Classified by Contractual Maturity Date [Table Text Block]
The amortized cost and fair value of fixed maturity securities at December 31, 2021 by contractual maturity are shown in the table below.  Actual maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. Securities not due at a single maturity date have been reflected based upon final stated maturity.

(In thousands)Amortized CostFair Value
Fixed maturity securities:  
Due in one year or less$40,017 40,752 
Due after one year through five years119,116 128,507 
Due after five years through ten years200,823 218,200 
Due after ten years983,799 1,083,158 
Total fixed maturity securities$1,343,755 1,470,617 
Debt and Equity Securities, Realized Gain (Loss) [Abstract]  
Schedule of Realized Gain (Loss) [Table Text Block]
The Company uses the specific identification method of the individual security to determine the cost basis used in the calculation of realized gains and losses related to security sales.

Years ended December 31,
(In thousands)
202120202019
Fixed maturity securities:
Proceeds$8,238 20,537 66,900 
Gross realized gains189 239 2,538 
Gross realized losses1 351 973 
Equity securities:
Proceeds$7,383 — — 
Gross realized gains— — — 
Gross realized losses149 — — 
Investment Income [Table Text Block]
Major categories of net investment income are summarized as follows:

Years ended December 31,
(In thousands)
202120202019
Gross investment income:   
Fixed maturity securities$55,579 54,653 53,860 
Equity securities1,024 816 662 
Policy loans6,420 6,605 6,451 
Other long-term investments809 238 13 
Other54 97 374 
Total investment income63,886 62,409 61,360 
Investment expenses(2,391)(2,212)(1,829)
Net investment income$61,495 60,197 59,531 
Realized Gain (Loss) on Investments [Table Text Block] nvestment related gains (losses) are as follows:
Years ended December 31,
(In thousands)
202120202019
Investment related gains (losses):   
Sales, calls and maturities:   
Fixed maturity securities$243 (112)1,927 
Equity securities(152)— — 
Real estate981 — 5,513 
Property and equipment13 9 (48)
Other long-term investments1,892 9 — 
Realized investment gains (losses)2,977 (94)7,392 
Change in fair value of equity securities376 1,596 962 
Change in fair value of limited partnerships7,452 — — 
Change in credit loss allowance186 — — 
Realized loss on OTTI - real estate held for sale— — (3,105)
Net investment related gains (losses)$10,991 1,502 5,249