Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2018

Fair Value Disclosures [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]

The following table sets forth our assets and liabilities that are measured at fair value on a recurring basis as of the date indicated.

	December 31, 2018
Financial assets	Level 1		Level 2	Level 3	Total Fair Value
	(In thousands)
Available-for-sale investments:
Fixed maturities:
U.S. Treasury and U.S. Government-sponsored enterprises	$	11,274	4,280	—	15,554
States and political subdivisions	—		720,115	—	720,115
Corporate	47		381,749	—	381,796
Commercial mortgage-backed	—		40,014	—	40,014
Residential mortgage-backed	—		68,684	—	68,684
Asset-backed	—		4,757	—	4,757
Foreign governments	—		119	—	119
Total fixed maturities available-for-sale	11,321		1,219,718	—	1,231,039
Equity securities:
Stock mutual funds	2,906		—	—	2,906
Bond mutual funds	11,774		—	—	11,774
Common stock	94		—	—	94
Non-redeemable preferred stock	294		—	—	294
Total equity securities	15,068		—	—	15,068
Total financial assets	$	26,389	1,219,718	—	1,246,107

	December 31, 2017
Available-for-sale investments	Level 1		Level 2	Level 3	Total Fair Value
	(In thousands)
Financial assets:
Fixed maturities:
U.S. Treasury and U.S. Government-sponsored enterprises	$	11,808	4,496	—	16,304
States and political subdivisions	—		567,503	—	567,503
Corporate	—		388,703	—	388,703
Residential mortgage-backed	—		1,978	—	1,978
Foreign governments	—		121	—	121
Total fixed maturities	11,808		962,801	—	974,609
Equity securities:
Stock mutual funds	3,217		—	—	3,217
Bond mutual funds	12,367		—	—	12,367
Common stock	24		—	—	24
Redeemable preferred stock	556		—	—	556
Total equity securities	16,164		—	—	16,164
Total financial assets	$	27,972	962,801	—	990,773

Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]

The following table presents additional information about fixed maturity securities measured at fair value on a recurring basis and for which we have utilized significant unobservable (Level 3) inputs to determine fair value:

	December 31,
	2018		2017
	(In thousands)
Beginning Balance at January 1,	$	—	51
Total realized and unrealized gains (losses)
Included in net income	—		—
Included in other comprehensive income	—		—
Principal paydowns	—		(51	)
Transfer in and (out) of Level 3	—		—
Ending Balance at December 31,	$	—	—

Fair Value, by Balance Sheet Grouping [Table Text Block]

The carrying amount and fair value for the financial assets and liabilities on the consolidated balance sheets at each year-end were as follows:

	December 31, 2018			December 31, 2017
	Carrying Value		Fair Value	Carrying Value	Fair Value
	(In thousands)
Financial assets:
Fixed maturities, held-to-maturity	$	—	—	233,961	241,377
Mortgage loans	186		222	195	228
Policy loans	80,825		80,825	73,735	73,735
Short-term investments	7,865		7,865	—	—
Cash and cash equivalents	45,492		45,492	46,064	46,064
Financial liabilities:
Annuities - investment contracts	$	56,658	55,977	55,035	57,575