Investments (Tables)

3 Months Ended

Mar. 31, 2024

Investments Including Short Term And Cash And Cash Equivalents [Abstract]

Investments Including Short Term And Cash And Cash Equivalents [Table Text Block]

The Company invests primarily in fixed maturity securities, which totaled 86.7% of total cash and invested assets at March 31, 2024, as shown below.

Carrying Value (In thousands, except for %)	March 31, 2024				December 31, 2023
	Amount		%		Amount	%
Cash and invested assets:
Fixed maturity securities	$	1,234,048	86.7	%	1,238,981	86.7	%
Equity securities	5,419		0.4		5,282	0.4
Policy loans	75,274		5.3		75,359	5.3
Other long-term investments	85,118		6.0		82,725	5.8
Cash and cash equivalents	23,242		1.6		26,997	1.8
Total cash and invested assets	$	1,423,101	100.0	%	1,429,344	100.0	%

Debt and Equity Securities, Unrealized Gain (Loss)

Unrealized Gain (Loss) on Investments [Table Text Block]

The following tables represent the amortized cost, gross unrealized gains and losses and fair value of fixed maturity securities as of the dates indicated.

	Amortized Cost		Gross Unrealized Gains	Gross Unrealized Losses	Fair Value
March 31, 2024
(In thousands)
Fixed maturity securities:
Available-for-sale:
U.S. Treasury securities	$	5,972	76	74	5,974
U.S. Government-sponsored enterprises	3,396		201	1	3,596
States and political subdivisions	313,364		1,718	30,027	285,055
Corporate:
Financial	273,436		1,701	32,459	242,678
Consumer	252,953		1,321	39,615	214,659
Utilities	127,577		369	21,576	106,370
Energy	72,733		27	8,576	64,184
Communications	73,354		247	9,843	63,758
All other	111,641		444	14,289	97,796
Commercial mortgage-backed	276		1	5	272
Residential mortgage-backed	106,977		7	12,136	94,848
Asset-backed	55,395		511	1,048	54,858
Total fixed maturity securities	$	1,397,074	6,623	169,649	1,234,048

	Amortized Cost		Gross Unrealized Gains	Gross Unrealized Losses	Fair Value
December 31, 2023
(In thousands)
Fixed maturity securities:
Available-for-sale:
U.S. Treasury securities	$	5,983	127	48	6,062
U.S. Government-sponsored enterprises	3,404		250	1	3,653
States and political subdivisions	314,203		2,160	29,132	287,231
Corporate:
Financial	266,485		2,066	31,255	237,296
Consumer	250,672		2,145	37,094	215,723
Utilities	123,625		615	20,253	103,987
Energy	73,808		64	8,049	65,823
Communications	74,029		309	8,892	65,446
All other	111,124		647	12,439	99,332
Commercial mortgage-backed	171		—	—	171
Residential mortgage-backed	107,174		9	10,060	97,123
Asset-backed	58,360		290	1,516	57,134
Total fixed maturity securities	$	1,389,038	8,682	158,739	1,238,981

Equity Securities, Restricted

Schedule of Equity Securities [Table Text Block]

Most of the Company's equity securities are invested in a non-redeemable preferred stock fund.

Fair Value (In thousands)	March 31, 2024		December 31, 2023
Equity securities:
Bond mutual funds	$	739	740
Common stock	664		665
Non-redeemable preferred stock	7		7
Non-redeemable preferred stock fund	4,009		3,870
Total equity securities	$	5,419	5,282

Unrealized Continuous Losses on Investments [Abstract]

Schedule of Unrealized Loss on Investments [Table Text Block]

March 31, 2024	Less than 12 months				Greater than 12 months			Total
(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 securities:
U.S. Treasury securities	$	1,178	67	5	66	7	2	1,244	74	7
U.S. Government-sponsored enterprises	220		1	1	—	—	—	220	1	1
States and political subdivisions	22,031		357	41	165,011	29,670	196	187,042	30,027	237
Corporate:
Financial	9,895		380	26	178,234	32,079	218	188,129	32,459	244
Consumer	13,303		643	29	174,217	38,972	224	187,520	39,615	253
Utilities	9,200		374	45	83,296	21,202	136	92,496	21,576	181
Energy	4,380		110	3	58,299	8,466	74	62,679	8,576	77
Communications	6,429		190	6	54,172	9,653	68	60,601	9,843	74
All Other	4,147		121	9	83,944	14,168	100	88,091	14,289	109
Commercial mortgage-backed	—		—	—	100	5	1	100	5	1
Residential mortgage-backed	133		2	7	94,337	12,134	86	94,470	12,136	93
Asset-backed	6,793		60	10	22,959	988	29	29,752	1,048	39
Total fixed maturity securities	$	77,709	2,305	182	914,635	167,344	1,134	992,344	169,649	1,316

December 31, 2023	Less than 12 months				Greater than 12 months			Total
(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 securities:
U.S. Treasury securities	$	1,203	40	5	65	8	2	1,268	48	7
U.S. Government-sponsored enterprises	221		1	1	—	—	—	221	1	1
States and political subdivisions	19,540		357	35	164,264	28,775	192	183,804	29,132	227
Corporate:
Financial	12,584		383	19	176,521	30,872	217	189,105	31,255	236
Consumer	10,175		265	16	176,725	36,829	223	186,900	37,094	239
Utilities	3,596		66	20	85,169	20,187	137	88,765	20,253	157
Energy	3,291		57	1	59,392	7,992	76	62,683	8,049	77
Communications	5,784		153	5	56,108	8,739	69	61,892	8,892	74
All Other	2,080		32	5	85,757	12,407	100	87,837	12,439	105
Residential mortgage-backed	849		38	5	95,806	10,022	86	96,655	10,060	91
Asset-backed	4,757		111	8	32,764	1,405	40	37,521	1,516	48
Total fixed maturity securities	$	64,080	1,503	120	932,571	157,236	1,142	996,651	158,739	1,262

Debt and Equity Securities, Realized Gain (Loss)

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.  

	Three Months Ended
	March 31,
(In thousands)	2024		2023
Fixed maturity securities, available-for-sale:
Proceeds	$	2,508	2,865
Gross realized gains	$	1	5
Gross realized losses	$	49	12

Schedule of Maturities by Contractual Maturity Date [Abstract]

Investments Classified by Contractual Maturity Date [Table Text Block]

The amortized cost and fair value of fixed maturity securities at March 31, 2024 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.

March 31, 2024	Amortized Cost		Fair Value
(In thousands)
Fixed maturity securities:
Due in one year or less	$	15,247	15,156
Due after one year through five years	127,682		125,714
Due after five years through ten years	300,002		291,665
Due after ten years	954,143		801,513
Total fixed maturity securities	$	1,397,074	1,234,048