Financial Schedules Schedule II - Statement of Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2014
Net income (loss)	$ 116	$ 2,762	$ 1,482	$ (2,391)	$ (2,197)	$ 250	$ (1,767)	$ 572	$ 1,969	$ (3,143)	$ (5,970)	$ (5,970)
Realized investment gains (losses), net									1,985	5,459		19
Amortization of premiums and discounts on investments									14,676	12,021		9,738
Depreciation									806	779		1,116
Accrued investment income									(2,497)	(1,949)		(1,110)
Other, net									(224)	99		542
Net cash provided by (used in) operating activities									102,271	87,153		97,934
Purchase of fixed maturities, held-to-maturity									(5,507)	(55,360)		(18,032)
Purchase of fixed maturities, available-for-sale									(234,964)	(134,126)		(128,906)
Maturities of fixed maturities, available-for-sale									56,032	75,231		50,405
Purchase of equity securities, available-for-sale									0	(602)		(36,297)
Sale of other long-term investments and property and equipment									37	60		2
Purchase of other long-term investments and property and equipment									(75)	0		(4)
Purchase of short-term investments									(522)	(255)		0
Net cash used in investing activities									(152,077)	(58,034)		(103,950)
Net cash provided by financing activities									2,489	3,000		2,131
Net increase (decrease) in cash and cash equivalents									(47,317)	32,119		(3,885)
Cash and cash equivalents at beginning of year				82,827				50,708	82,827	50,708		54,593
Cash and cash equivalents at end of year	35,510				82,827				35,510	82,827	50,708	50,708
Parent Company [Member]
Net income (loss)									1,969	(3,143)		(5,970)
Realized investment gains (losses), net									0	0		(46)
Equity in income of consolidated subsidiaries									(1,288)	4,978		7,843
Accrued expenses and other liabilities									(3,018)	483		(29)
Amortization of premiums and discounts on investments									911	984		789
Depreciation									162	155		169
Accrued investment income									35	(14)		(148)
Decrease (increase) in receivable from subsidiaries									300	(627)		69
Other, net									149	110		(471)
Net cash provided by (used in) operating activities									(780)	2,926		2,206
Purchase of fixed maturities, held-to-maturity									0	0		0
Purchase of fixed maturities, available-for-sale									(6,615)	(4,559)		(11,949)
Maturities of fixed maturities, available-for-sale									8,015	2,645		2,271
Purchase of equity securities, available-for-sale									0	0		0
Sale of other long-term investments and property and equipment									371	16		0
Purchase of other long-term investments and property and equipment									(740)	(88)		0
Purchase of short-term investments									(522)	0		0
Net cash used in investing activities									509	(1,986)		(9,678)
Dividend from subsidiary									0	0		5,250
Purchase of the Company's stock from affiliates									(812)	0		0
Net cash provided by financing activities									(812)	0		5,250
Net increase (decrease) in cash and cash equivalents									(1,083)	940		(2,222)
Cash and cash equivalents at beginning of year				$ 15,756				$ 14,816	15,756	14,816		17,038
Cash and cash equivalents at end of year	$ 14,673				$ 15,756				$ 14,673	$ 15,756	$ 14,816	$ 14,816