Investments (Tables)

9 Months Ended

Sep. 30, 2019

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 90.1% of total cash, cash equivalents and investments at September 30, 2019. The Company's cash, cash equivalents and investments are listed below.

Carrying Value (In thousands, except for %)	September 30, 2019				December 31, 2018
	Amount		%		Amount		%
Fixed maturity securities	$	1,369,648	90.1	%	$	1,231,039	88.7	%
Equity securities	15,845		1.0	%	15,068		1.1	%
Mortgage loans	180		—	%	186		—	%
Policy loans	81,964		5.4	%	80,825		5.8	%
Real estate and other long-term investments	2,593		0.2	%	7,223		0.5	%
Short-term investments	2,453		0.2	%	7,865		0.6	%
Cash and cash equivalents	47,147		3.1	%	45,492		3.3	%
Total cash, cash equivalents and investments	$	1,519,830	100.0	%	$	1,387,698	100.0	%

Debt and Equity Securities, Unrealized Gain (Loss)

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

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

	Cost or Amortized Cost		Gross Unrealized Gains	Gross Unrealized Losses	Fair Value
September 30, 2019
(In thousands)
Fixed maturities:
Available-for-sale:
U.S. Treasury securities	$	9,729	1,775	—	11,504
U.S. Government-sponsored enterprises	3,522		1,124	—	4,646
States and political subdivisions	567,551		29,392	125	596,818
Corporate	560,701		45,148	1,741	604,108
Commercial mortgage-backed	1,107		—	—	1,107
Residential mortgage-backed	118,101		15,787	23	133,865
Asset-backed	17,480		11	11	17,480
Foreign governments	102		18	—	120
Total fixed maturities	$	1,278,293	93,255	1,900	1,369,648

	Cost or Amortized Cost		Gross Unrealized Gains	Gross Unrealized Losses	Fair Value
December 31, 2018
(In thousands)
Fixed maturities:
Available-for-sale securities:
U.S. Treasury securities	$	9,864	1,410	—	11,274
U.S. Government-sponsored enterprises	3,540		740	—	4,280
States and political subdivisions	713,991		7,614	1,490	720,115
Corporate	384,817		6,725	9,746	381,796
Commercial mortgage-backed	39,694		386	66	40,014
Residential mortgage-backed	66,960		1,726	2	68,684
Asset-backed	4,764		1	8	4,757
Foreign governments	117		2	—	119
Total fixed maturities	$	1,223,747	18,604	11,312	1,231,039

Equity Securities, Restricted

Schedule of Equity Securities [Table Text Block]

Most of the Company's equity securities are diversified stock and bond mutual funds.

Fair Value (In thousands)	September 30, 2019		December 31, 2018
Equity securities:
Stock mutual funds	$	3,166	2,906
Bond mutual funds	12,242		11,774
Common stock	127		94
Non-redeemable preferred stock	310		294
Total equity securities	$	15,845	15,068

Unrealized Continuous Losses on Investments [Abstract]

Schedule of Unrealized Loss on Investments [Table Text Block]

The following tables present the fair values and gross unrealized losses of fixed maturity securities that have remained in a continuous unrealized loss position for the periods indicated.

September 30, 2019	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 maturities:
Available-for-sale securities:
States and political subdivisions	$	11,307	54	14	$	3,435	71	7	$	14,742	125	21
Corporate	53,407		1,331	51	6,310		410	4	59,717		1,741	55
Commercial mortgage-backed	882		—	1	—		—	—	882		—	1
Residential mortgage-backed	1,701		21	9	93		2	3	1,794		23	12
Asset-backed	7,736		11	10	—		—	—	7,736		11	10
Total fixed maturities	$	75,033	1,417	85	$	9,838	483	14	$	84,871	1,900	99

December 31, 2018	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 maturities:
Available-for-sale securities:
States and political subdivisions	$	227,132	883	233	$	33,891	607	46	$	261,023	1,490	279
Corporate	230,030		8,770	191	9,936		976	8	239,966		9,746	199
Commercial mortgage-backed	14,992		66	11	—		—	—	14,992		66	11
Residential mortgage-backed	18		—	3	98		2	4	116		2	7
Asset-backed	3,747		8	4	—		—	—	3,747		8	4
Total fixed maturities	$	475,919	9,727	442	$	43,925	1,585	58	$	519,844	11,312	500

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.  

	Fixed Maturity Securities, Available-for-Sale
	Three Months Ended			Nine Months Ended
	September 30,			September 30,
(In thousands)	2019		2018	2019	2018
Proceeds	$	29,294	1,084	39,708	1,084
Gross realized gains	$	125	54	234	54
Gross realized losses	$	22	—	387	—

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 September 30, 2019 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.

September 30, 2019	Amortized Cost		Fair Value
(In thousands)
Fixed maturity securities:
Due in one year or less	$	111,775	112,511
Due after one year through five years	118,968		124,385
Due after five years through ten years	198,215		212,237
Due after ten years	849,335		920,515
Total fixed maturity securities	$	1,278,293	1,369,648