Investments (Tables)

9 Months Ended

Sep. 30, 2018

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 87.6% of total cash, cash equivalents and investments at September 30, 2018. The Company's cash, cash equivalents and investments are listed below.

	September 30, 2018			December 31, 2017
	Carrying Value		% of Total Carrying Value	Carrying Value		% of Total Carrying Value
	(In thousands)			(In thousands)
Fixed maturity securities	$	1,200,154	87.6	$	1,208,570	89.3
Equity securities	15,529		1.1	16,164		1.2
Mortgage loans	188		—	195		—
Policy loans	79,012		5.8	73,735		5.5
Real estate and other long-term investments	7,248		0.5	7,452		0.6
Cash and cash equivalents	68,753		5.0	46,064		3.4
Total cash, cash equivalents and investments	$	1,370,884	100.0	$	1,352,180	100.0

Debt and Equity Securities, Unrealized Gain (Loss)

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

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

	September 30, 2018
	Cost or Amortized Cost		Gross Unrealized Gains	Gross Unrealized Losses	Fair Value
	(In thousands)
Fixed maturities:
Available-for-sale:
U.S. Treasury securities	$	9,887	1,250	6	11,131
U.S. Government-sponsored enterprises	3,546		662	—	4,208
States and political subdivisions	740,333		4,973	4,376	740,930
Foreign governments	118		—	1	117
Corporate	404,183		9,655	4,706	409,132
Commercial mortgage-backed	3,662		13	49	3,626
Residential mortgage-backed	31,482		105	577	31,010
Total fixed maturities	$	1,193,211	16,658	9,715	1,200,154

We reclassified all of our fixed maturity holdings that were previously classified as held-to-maturity to available-for-sale based upon our intent and investment strategy as of September 30, 2018. The net carrying value of the fixed maturities held-to-maturity reclassified as available-for-sale amounted to $209.7 million and resulted in a net unrealized gain of $0.5 million being recorded in other comprehensive income before tax.

	December 31, 2017
	Cost or Amortized Cost		Gross Unrealized Gains	Gross Unrealized Losses	Fair Value
	(In thousands)
Fixed maturities:
Available-for-sale securities:
U.S. Treasury securities	$	9,860	1,948	—	11,808
U.S. Government-sponsored enterprises	3,570		926	—	4,496
States and political subdivisions	550,536		18,507	1,540	567,503
Foreign governments	103		18	—	121
Corporate	370,043		20,212	1,552	388,703
Residential mortgage-backed	1,865		118	5	1,978
Total available-for-sale securities	935,977		41,729	3,097	974,609
Held-to-maturity securities:
States and political subdivisions	213,054		7,585	629	220,010
Corporate	20,907		1,118	658	21,367
Total held-to-maturity securities	233,961		8,703	1,287	241,377
Total fixed maturity securities	$	1,169,938	50,432	4,384	1,215,986

Equity Securities, Restricted

Schedule of Equity Securities [Table Text Block]

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

	September 30, 2018		December 31, 2017
	Fair Value		Fair Value
	(In thousands)
Equity securities:
Stock mutual funds	$	3,196	3,217
Bond mutual funds	12,096		12,367
Common stock	96		24
Preferred stock	141		556
Total equity securities	$	15,529	16,164

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, 2018
	Less than 12 months				Greater than 12 months			Total
	Fair Value		Unrealized Losses	# of Securities	Fair Value	Unrealized Losses	# of Securities	Fair Value	Unrealized Losses	# of Securities
	(In thousands, except for # of securities)
Fixed maturities:
Available-for-sale securities:
U.S. Treasury securities	$	757	6	2	—	—	—	757	6	2
States and political subdivisions	494,116		3,659	479	31,452	717	42	525,568	4,376	521
Corporate	206,965		4,193	160	6,366	513	6	213,331	4,706	166
Commercial mortgage-backed	2,725		49	4	—	—	—	2,725	49	4
Residential mortgage-backed	27,048		574	21	101	3	3	27,149	577	24
Foreign	117		1	1	—	—	—	117	1	1
Total available-for-sale securities	$	731,728	8,482	667	37,919	1,233	51	769,647	9,715	718

As of September 30, 2018, the Company had 51 available-for-sale fixed maturity securities that were in an unrealized loss position for greater than 12 months.

	December 31, 2017
	Less than 12 months				Greater than 12 months			Total
	Fair Value		Unrealized Losses	# of Securities	Fair Value	Unrealized Losses	# of Securities	Fair Value	Unrealized Losses	# of Securities
	(In thousands, except for # of securities)
Fixed maturities:
Available-for-sale securities:
States and political subdivisions	$	49,408	312	46	47,233	1,228	46	96,641	1,540	92
Corporate	61,071		732	39	7,651	820	10	68,722	1,552	49
Residential mortgage-backed	132		3	4	157	2	4	289	5	8
Total available-for-sale securities	110,611		1,047	89	55,041	2,050	60	165,652	3,097	149
Held-to-maturity securities:
States and political subdivisions	14,178		45	15	7,460	584	14	21,638	629	29
Corporate	—		—	—	2,169	658	2	2,169	658	2
Total held-to-maturity securities	14,178		45	15	9,629	1,242	16	23,807	1,287	31
Total fixed maturities	$	124,789	1,092	104	64,670	3,292	76	189,459	4,384	180
Equity securities:
Redeemable preferred stock	95		6	1	—	—	—	95	6	1
Total equity securities	$	95	6	1	—	—	—	95	6	1

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			Nine Months Ended		Three Months Ended		Nine Months Ended
	September 30,			September 30,		September 30,		September 30,
	2018		2017	2018	2017	2018	2017	2018	2017
	(In thousands)
Proceeds	$	1,084	—	1,084	508	—	—	—	1,940
Gross realized gains	$	54	—	53	6	—	—	—	—
Gross realized losses	$	—	—	—	—	—	—	—	30

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, 2018 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, 2018
	Amortized Cost		Fair Value
	(In thousands)
Fixed maturity securities:
Due in one year or less	$	43,088	43,190
Due after one year through five years	142,943		146,280
Due after five years through ten years	230,995		232,627
Due after ten years	776,185		778,057
Total fixed maturity securities	$	1,193,211	1,200,154