Investments (Tables)

6 Months Ended

Jun. 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 90.7% of total cash, cash equivalents and investments at June 30, 2019. The Company's cash, cash equivalents and investments are listed below.

Carrying Value (In thousands, except for %)	June 30, 2019				December 31, 2018
	Amount		%		Amount		%
Fixed maturity securities	$	1,341,339	90.7	%	$	1,231,039	88.7	%
Equity securities	15,827		1.1	%	15,068		1.1	%
Mortgage loans	182		—	%	186		—	%
Policy loans	81,545		5.5	%	80,825		5.8	%
Real estate and other long-term investments	2,593		0.2	%	7,223		0.5	%
Short-term investments	2,455		0.2	%	7,865		0.6	%
Cash and cash equivalents	34,568		2.3	%	45,492		3.3	%
Total cash, cash equivalents and investments	$	1,478,509	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
June 30, 2019
(In thousands)
Fixed maturities:
Available-for-sale:
U.S. Treasury securities	$	9,749	1,733	—	11,482
U.S. Government-sponsored enterprises	3,528		1,015	—	4,543
States and political subdivisions	651,598		25,193	351	676,440
Corporate	481,406		30,533	2,171	509,768
Commercial mortgage-backed	1,109		2	—	1,111
Residential mortgage-backed	116,364		11,280	2	127,642
Asset-backed	10,229		5	1	10,233
Foreign governments	102		18	—	120
Total fixed maturities	$	1,274,085	69,779	2,525	1,341,339

	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)	June 30, 2019		December 31, 2018
Equity securities:
Stock mutual funds	$	3,142	2,906
Bond mutual funds	12,255		11,774
Common stock	120		94
Non-redeemable preferred stock	310		294
Total equity securities	$	15,827	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.

June 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	$	44,983	198	39	24,021	153	33	69,004	351	72
Corporate	57,128		1,868	39	10,304	303	12	67,432	2,171	51
Residential mortgage-backed	—		—	—	94	2	4	94	2	4
Asset-backed	1,345		1	2	—	—	—	1,345	1	2
Total fixed maturities	$	103,456	2,067	80	34,419	458	49	137,875	2,525	129

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 Maturities, Available-for-Sale					Equity Securities
	Three Months Ended			Six Months Ended		Three Months Ended		Six Months Ended
	June 30,			June 30,		June 30,		June 30,
(In thousands)	2019		2018	2019	2018	2019	2018	2019	2018
Proceeds	$	2,755	—	10,414	—	—	—	—	—
Gross realized gains	$	107	—	109	—	—	—	—	—
Gross realized losses	$	182	—	365	—	—	—	—	—

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 June 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.

June 30, 2019	Amortized Cost		Fair Value
(In thousands)
Fixed maturity securities:
Due in one year or less	$	102,787	103,200
Due after one year through five years	131,248		136,348
Due after five years through ten years	214,674		226,791
Due after ten years	825,376		875,000
Total fixed maturity securities	$	1,274,085	1,341,339