Investments (Details) (USD $)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013	Dec. 31, 2012
Investments Including Short Term And Cash And Cash Equivalents [Abstract]
Fixed maturity securities	$ 911,888,000		$ 911,888,000		$ 832,952,000
Fixed maturity securities percent	84.00%		84.00%		83.90%
Equity securities	55,643,000		55,643,000		47,259,000
Equity securities percent	5.10%		5.10%		4.80%
Mortgage loans	641,000		641,000		671,000
Mortgage loans percent	0.10%		0.10%		0.10%
Policy loans	52,575,000		52,575,000		48,868,000
Policy loans percent	4.80%		4.80%		4.80%
Real estate and other long-term investments	8,310,000		8,310,000		8,485,000
Real estate and other long-term investments percent	0.80%		0.80%		0.90%
Cash and cash equivalents	56,986,000	41,687,000	56,986,000	41,687,000	54,593,000	56,299,000
Cash and cash equivalents percent	5.20%		5.20%		5.50%
Total cash, cash equivalents and investments	1,086,043,000		1,086,043,000		992,828,000
Total cash, cash equivalents and investments percent	100.00%		100.00%		100.00%
Unrealized Gain (Loss) on Investments [Abstract]
Available-for-sale Debt Securities, Amortized Cost Basis	647,257,000		647,257,000		595,944,000
Available-for-sale Equity Securities, Amortized Cost Basis	53,906,000		53,906,000		45,883,000
Available-for-sale Securities, Fair Value	737,234,000		737,234,000		652,515,000
Available-for-sale Securities, Debt Securities, Amortized Cost Basis, Total	647,257,000		647,257,000		595,944,000
Available-for-sale Debt Securities, Gross Unrealized Gains, Total			37,177,000		22,390,000
Available-for-sale Debt Securities, Gross Unrealized Losses, Total			2,843,000		13,078,000
Available-for-sale Debt Securities, Fair Value	681,591,000		681,591,000		605,256,000
Held-to-maturity Securities, Debt Securities, Net Carrying Amount	230,297,000		230,297,000		227,696,000
Held-to-maturity Securities, Unrecognized Holding Gain			7,208,000		2,601,000
Held-to-maturity Securities, Unrecognized Holding Loss			1,340,000		6,764,000
Held-to-maturity Securities, Fair Value	236,165,000		236,165,000		223,533,000
Total Fixed Maturity Securities, Amortized Cost	877,554,000		877,554,000
Total Fixed Maturity Securities, Fair Value	917,756,000		917,756,000
Unrealized Continuous Losses on Investments [Abstract]
Number of Available-for-sale Securities In Continuous Loss Position Aggregate	133		133		262
Debt Securities In Continuous Loss Less Than 12 Months Fair Value	85,935,000		85,935,000		341,533,000
Debt Securities Continuous Loss Position Less Than 12 Months Unrealized Losses			1,106,000		16,737,000
Number of Debt Securities In Continuous Loss Less Than 12 Months	94		94		366
Debt Securities In Continuous Loss Position 12 Months Or Longer, Fair Value	107,800,000		107,800,000		32,938,000
Debt Securities In Continuous Loss Position 12 Months Or Longer, Unrealized Losses			3,077,000		3,105,000
Number of Debt Securities In Continuous Loss Position 12 Months or Longer	101		101		36
Debt Securities In Continuous Loss Position, Aggregate Fair Value	193,735,000		193,735,000		374,471,000
Debt Securities In Continuous Loss Position, Aggregate Unrealized Losses			4,183,000		19,842,000
Number of Debt Securities In Continuous Loss Position, Aggregate	195		195		402
Available-for-sale Securities, Gross Realized Gain (Loss) [Abstract]
Proceeds from Sale of Available-for-sale Securities, Fixed Maturities	100,000	259,000	680,000	317,000
Proceeds from Sale of Available-for-sale Securities, Equity	3,924,000	0	15,029,000	0
Schedule of Fixed Maturities [Abstract]
Available-for-sale Securities, Debt Maturities, Due in One Year or Less, Amortized Cost Basis	35,959,000		35,959,000
Available-for-sale Securities, Debt Maturities, Due in One Year or Less, Fair Value	36,529,000		36,529,000
Available-for-sale Securities, Debt Maturities, Due After One Year Through Five Years, Amortized Cost Basis	112,116,000		112,116,000
Available-for-sale Securities, Debt Maturities, Due After One Year Through Five Years, Fair Value	118,976,000		118,976,000
Available-for-sale Securities, Debt Maturities, Due After Five Years Through Ten Years, Amortized Cost Basis	92,456,000		92,456,000
Available-for-sale Securities, Debt Maturities, Due After Five Years Through Ten Years, Fair Value	97,519,000		97,519,000
Available-for-sale Securities, Debt Maturities, Due After Ten Years, Amortized Cost Basis	406,726,000		406,726,000
Available-for-sale Securities, Debt Maturities, Due After Ten Years, Fair Value	428,567,000		428,567,000
Held-to-maturity Securities, Debt Maturities, Due in One Year or Less, Amortized Cost Basis	18,069,000		18,069,000
Held-to-maturity Securities, Debt Maturities, Due in One Year or Less, Fair Value	18,198,000		18,198,000
Held-to-maturity Securities, Debt Maturities, Due After One Year Through Five Years, Amortized Cost Basis	24,252,000		24,252,000
Held-to-maturity Securities, Debt Maturities, Due After One Year Through Five Years, Fair Value	24,927,000		24,927,000
Held-to-maturity Securities, Debt Maturities, Due After Five Years Through Ten Years, Amortized Cost Basis	56,641,000		56,641,000
Held-to-maturity Securities, Debt Maturities, Due After Five Years Through Ten Years, Fair Value	58,762,000		58,762,000
Held-to-maturity Securities, Debt Maturities, Due After Ten Years, Amortized Cost Basis	131,335,000		131,335,000
Held-to-maturity Securities, Debt Maturities, Due After Ten Years, Fair Value	134,278,000		134,278,000
Sale of bonds, number of securities sold at a loss	1			0
Sale of bonds, number of held-to-maturity bonds sold	0			0
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net	300,000	0	300,000	0
US Treasury Securities [Member]
Unrealized Gain (Loss) on Investments [Abstract]
Available-for-sale Debt Securities, Amortized Cost Basis	10,071,000		10,071,000		10,115,000
Available-for-sale Securities, Gross Unrealized Gains			2,656,000		2,348,000
Available-for-sale Securities, Gross Unrealized Losses			0		0
Available-for-sale Securities, Fair Value	12,727,000		12,727,000		12,463,000
US Government Agencies Debt Securities [Member]
Unrealized Gain (Loss) on Investments [Abstract]
Available-for-sale Debt Securities, Amortized Cost Basis	38,539,000		38,539,000		53,587,000
Available-for-sale Securities, Gross Unrealized Gains			1,817,000		1,209,000
Available-for-sale Securities, Gross Unrealized Losses			1,000		228,000
Available-for-sale Securities, Fair Value	40,355,000		40,355,000		54,568,000
Held-to-maturity Securities, Debt Securities, Net Carrying Amount	5,783,000		5,783,000		8,877,000
Held-to-maturity Securities, Unrecognized Holding Gain			212,000		197,000
Held-to-maturity Securities, Unrecognized Holding Loss			0		3,000
Held-to-maturity Securities, Fair Value	5,995,000		5,995,000		9,071,000
Unrealized Continuous Losses on Investments [Abstract]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	159,000		159,000		14,032,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses			1,000		228,000
Number of Available-for-sale Securities In Continuous Loss Position Less Than 12 Months	1		1		12
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	0		0		0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses			0		0
Number of Available-for-sale Securities In Continuous Loss Position For 12 months or Greater	0		0		0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	159,000		159,000		14,032,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses			1,000		228,000
Number of Available-for-sale Securities In Continuous Loss Position Aggregate	1		1		12
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value					2,997,000
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses					3,000
Number of Held-to-maturity Securities In Continuous Loss Position Less Than 12 Months					1
Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value					0
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses					0
Number of Held-to-maturity Securities In Continuous Loss Position 12 Months or Greater					0
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value					2,997,000
Held-to-maturity Securities, Continuous Unrealized Loss Position, Aggregate Losses					3,000
Number of Held-to-maturity Securities In Continuous Loss Position Aggregate					1
US States and Political Subdivisions Debt Securities [Member]
Unrealized Gain (Loss) on Investments [Abstract]
Available-for-sale Debt Securities, Amortized Cost Basis	384,239,000		384,239,000		341,673,000
Available-for-sale Securities, Gross Unrealized Gains			15,344,000		6,242,000
Available-for-sale Securities, Gross Unrealized Losses			2,422,000		11,449,000
Available-for-sale Securities, Fair Value	397,161,000		397,161,000		336,466,000
Held-to-maturity Securities, Debt Securities, Net Carrying Amount	189,125,000		189,125,000		181,246,000
Held-to-maturity Securities, Unrecognized Holding Gain			6,072,000		1,633,000
Held-to-maturity Securities, Unrecognized Holding Loss			1,098,000		6,412,000
Held-to-maturity Securities, Fair Value	194,099,000		194,099,000		176,467,000
Unrealized Continuous Losses on Investments [Abstract]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	46,146,000		46,146,000		183,280,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses			508,000		9,872,000
Number of Available-for-sale Securities In Continuous Loss Position Less Than 12 Months	50		50		203
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	58,380,000		58,380,000		15,673,000
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses			1,914,000		1,577,000
Number of Available-for-sale Securities In Continuous Loss Position For 12 months or Greater	50		50		16
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	104,526,000		104,526,000		198,953,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses			2,422,000		11,449,000
Number of Available-for-sale Securities In Continuous Loss Position Aggregate	100		100		219
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	14,143,000		14,143,000		100,153,000
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses			93,000		5,236,000
Number of Held-to-maturity Securities In Continuous Loss Position Less Than 12 Months	13		13		118
Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	43,699,000		43,699,000		14,797,000
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses			1,005,000		1,176,000
Number of Held-to-maturity Securities In Continuous Loss Position 12 Months or Greater	45		45		17
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value	57,842,000		57,842,000		114,950,000
Held-to-maturity Securities, Continuous Unrealized Loss Position, Aggregate Losses			1,098,000		6,412,000
Number of Held-to-maturity Securities In Continuous Loss Position Aggregate	58		58		135
Foreign Government Debt Securities [Member]
Unrealized Gain (Loss) on Investments [Abstract]
Available-for-sale Debt Securities, Amortized Cost Basis	104,000		104,000		104,000
Available-for-sale Securities, Gross Unrealized Gains			29,000		23,000
Available-for-sale Securities, Gross Unrealized Losses			0		0
Available-for-sale Securities, Fair Value	133,000		133,000		127,000
Corporate Debt Securities [Member]
Unrealized Gain (Loss) on Investments [Abstract]
Available-for-sale Debt Securities, Amortized Cost Basis	210,715,000		210,715,000		186,671,000
Available-for-sale Securities, Gross Unrealized Gains			17,063,000		12,289,000
Available-for-sale Securities, Gross Unrealized Losses			417,000		1,399,000
Available-for-sale Securities, Fair Value	227,361,000		227,361,000		197,561,000
Held-to-maturity Securities, Debt Securities, Net Carrying Amount	35,389,000		35,389,000		37,573,000
Held-to-maturity Securities, Unrecognized Holding Gain			924,000		771,000
Held-to-maturity Securities, Unrecognized Holding Loss			242,000		349,000
Held-to-maturity Securities, Fair Value	36,071,000		36,071,000		37,995,000
Unrealized Continuous Losses on Investments [Abstract]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	22,950,000		22,950,000		35,789,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses			324,000		1,048,000
Number of Available-for-sale Securities In Continuous Loss Position Less Than 12 Months	21		21		25
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	2,681,000		2,681,000		2,426,000
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses			93,000		351,000
Number of Available-for-sale Securities In Continuous Loss Position For 12 months or Greater	2		2		2
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	25,631,000		25,631,000		38,215,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses			417,000		1,399,000
Number of Available-for-sale Securities In Continuous Loss Position Aggregate	23		23		27
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	2,368,000		2,368,000		5,225,000
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses			178,000		349,000
Number of Held-to-maturity Securities In Continuous Loss Position Less Than 12 Months	2		2		4
Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	2,958,000		2,958,000		0
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses			64,000		0
Number of Held-to-maturity Securities In Continuous Loss Position 12 Months or Greater	2		2		0
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value	5,326,000		5,326,000		5,225,000
Held-to-maturity Securities, Continuous Unrealized Loss Position, Aggregate Losses			242,000		349,000
Number of Held-to-maturity Securities In Continuous Loss Position Aggregate	4		4		4
Commercial Mortgage Backed Securities [Member]
Unrealized Gain (Loss) on Investments [Abstract]
Available-for-sale Debt Securities, Amortized Cost Basis	243,000		243,000		300,000
Available-for-sale Securities, Gross Unrealized Gains			8,000		9,000
Available-for-sale Securities, Gross Unrealized Losses			0		0
Available-for-sale Securities, Fair Value	251,000		251,000		309,000
Residential Mortgage Backed Securities [Member]
Unrealized Gain (Loss) on Investments [Abstract]
Available-for-sale Debt Securities, Amortized Cost Basis	3,346,000		3,346,000		3,494,000
Available-for-sale Securities, Gross Unrealized Gains			260,000		270,000
Available-for-sale Securities, Gross Unrealized Losses			3,000		2,000
Available-for-sale Securities, Fair Value	3,603,000		3,603,000		3,762,000
Unrealized Continuous Losses on Investments [Abstract]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	169,000		169,000		57,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses			2,000		1,000
Number of Available-for-sale Securities In Continuous Loss Position Less Than 12 Months	7		7		3
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	82,000		82,000		42,000
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses			1,000		1,000
Number of Available-for-sale Securities In Continuous Loss Position For 12 months or Greater	2		2		1
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	251,000		251,000		99,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses			3,000		2,000
Number of Available-for-sale Securities In Continuous Loss Position Aggregate	9		9		4
Debt Securities [Member]
Unrealized Gain (Loss) on Investments [Abstract]
Total Fixed Maturity Securities, Amortized Cost	877,554,000		877,554,000		823,640,000
Total Fixed Maturity Securities, Gross Unrealized Gains			44,385,000		24,991,000
Total Fixed Maturity Securities, Gross Unrealized Losses			4,183,000		19,842,000
Total Fixed Maturity Securities, Fair Value	917,756,000		917,756,000		828,789,000
Unrealized Continuous Losses on Investments [Abstract]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	69,424,000		69,424,000		233,158,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses			835,000		11,149,000
Number of Available-for-sale Securities In Continuous Loss Position Less Than 12 Months	79		79		243
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	61,143,000		61,143,000		18,141,000
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses			2,008,000		1,929,000
Number of Available-for-sale Securities In Continuous Loss Position For 12 months or Greater	54		54		19
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	130,567,000		130,567,000		251,299,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses			2,843,000		13,078,000
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	16,511,000		16,511,000		108,375,000
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses			271,000		5,588,000
Number of Held-to-maturity Securities In Continuous Loss Position Less Than 12 Months	15		15		123
Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	46,657,000		46,657,000		14,797,000
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses			1,069,000		1,176,000
Number of Held-to-maturity Securities In Continuous Loss Position 12 Months or Greater	47		47		17
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value	63,168,000		63,168,000		123,172,000
Held-to-maturity Securities, Continuous Unrealized Loss Position, Aggregate Losses			1,340,000		6,764,000
Number of Held-to-maturity Securities In Continuous Loss Position Aggregate	62		62		140
Available-for-sale Securities, Gross Realized Gain (Loss) [Abstract]
Available-for-sale Securities, Gross Realized Gains	5,000	7,000	26,000	8,000
Available-for-sale Securities, Gross Realized Losses	0	1,000	0	1,000
Stock Mutual Funds [Member]
Unrealized Gain (Loss) on Investments [Abstract]
Available-for-sale Equity Securities, Amortized Cost Basis	15,738,000		15,738,000		10,463,000
Available-for-sale Securities, Gross Unrealized Gains			1,801,000		1,506,000
Available-for-sale Securities, Gross Unrealized Losses			30,000		0
Available-for-sale Securities, Fair Value	17,509,000		17,509,000		11,969,000
Unrealized Continuous Losses on Investments [Abstract]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	1,970,000		1,970,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses			30,000
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Less than One Year	2		2
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	0		0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses			0
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year	0		0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	1,970,000		1,970,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses			30,000
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	2		2
Bond Mutual Funds [Member]
Unrealized Gain (Loss) on Investments [Abstract]
Available-for-sale Equity Securities, Amortized Cost Basis	35,704,000		35,704,000		35,080,000
Available-for-sale Securities, Gross Unrealized Gains			0		0
Available-for-sale Securities, Gross Unrealized Losses			280,000		417,000
Available-for-sale Securities, Fair Value	35,424,000		35,424,000		34,663,000
Unrealized Continuous Losses on Investments [Abstract]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	15,720,000		15,720,000		34,663,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses			280,000		417,000
Number of Available-for-sale Securities In Continuous Loss Position Less Than 12 Months	2		2		7
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	0		0		0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses			0		0
Number of Available-for-sale Securities In Continuous Loss Position For 12 months or Greater	0		0		0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	15,720,000		15,720,000		34,663,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses			280,000		417,000
Number of Available-for-sale Securities In Continuous Loss Position Aggregate	2		2		7
Common Stock [Member]
Unrealized Gain (Loss) on Investments [Abstract]
Available-for-sale Equity Securities, Amortized Cost Basis	723,000		723,000		17,000
Available-for-sale Securities, Gross Unrealized Gains			21,000		0
Available-for-sale Securities, Gross Unrealized Losses			11,000		5,000
Available-for-sale Securities, Fair Value	733,000		733,000		12,000
Unrealized Continuous Losses on Investments [Abstract]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	0		0		12,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses			0		5,000
Number of Available-for-sale Securities In Continuous Loss Position Less Than 12 Months	0		0		1
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	6,000		6,000		0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses			11,000		0
Number of Available-for-sale Securities In Continuous Loss Position For 12 months or Greater	1		1		0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	6,000		6,000		12,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses			11,000		5,000
Number of Available-for-sale Securities In Continuous Loss Position Aggregate	1		1		1
Preferred Stock [Member]
Unrealized Gain (Loss) on Investments [Abstract]
Available-for-sale Equity Securities, Amortized Cost Basis	1,741,000		1,741,000		323,000
Available-for-sale Securities, Gross Unrealized Gains			236,000		292,000
Available-for-sale Securities, Gross Unrealized Losses			0		0
Available-for-sale Securities, Fair Value	1,977,000		1,977,000		615,000
Unrealized Continuous Losses on Investments [Abstract]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	0		0
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses			0
Number of Available-for-sale Securities In Continuous Loss Position Less Than 12 Months	0		0
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	0		0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses			0
Number of Available-for-sale Securities In Continuous Loss Position For 12 months or Greater	0		0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	0		0
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses			0
Number of Available-for-sale Securities In Continuous Loss Position Aggregate	0		0
Equity Securities [Member]
Unrealized Gain (Loss) on Investments [Abstract]
Available-for-sale Equity Securities, Amortized Cost Basis	53,906,000		53,906,000		45,883,000
Available-for-sale Securities, Gross Unrealized Gains			2,058,000		1,798,000
Available-for-sale Securities, Gross Unrealized Losses			321,000		422,000
Available-for-sale Securities, Fair Value	55,643,000		55,643,000		47,259,000
Unrealized Continuous Losses on Investments [Abstract]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	17,690,000		17,690,000		34,675,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses			310,000		422,000
Number of Available-for-sale Securities In Continuous Loss Position Less Than 12 Months	4		4		8
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	6,000		6,000		0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses			11,000		0
Number of Available-for-sale Securities In Continuous Loss Position For 12 months or Greater	1		1		0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	17,696,000		17,696,000		34,675,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses			321,000		422,000
Number of Available-for-sale Securities In Continuous Loss Position Aggregate	5		5		8
Available-for-sale Securities, Gross Realized Gain (Loss) [Abstract]
Available-for-sale Securities, Gross Realized Gains	55,000	0	118,000	0
Available-for-sale Securities, Gross Realized Losses	$ 0	$ 0	$ 169,000	$ 0