Investments (Details) (USD $)	3 Months Ended		12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Investments [Abstract]
Increase in total investments	$ 24,800,000
Percentage increase in investments (in hundredths)	11.20%
Increase in gross premiums written	34,400,000
Percentage increase in gross premiums written (in hundredths)	86.60%
Homeowners' Gross Premiums Written	74,000,000	39,600,000
Increase in homeowners gross written transferred to investment accounts	19,000,000
Ratio of available-for-sale securities to total investments (in hundredths)	97.00%		97.00%
Schedule of Available-for-sale Securities [Line Items]
Debt maturities, held to maturity, at amortized cost	7,323,000		7,214,000
Bond portfolio reclassified between available-for-sale and held-to-maturity	0	0
Debt securities, at market [Abstract]
Debt securities, at market	200,339,000		174,912,000
Percent of debt securities at market to total investments (in hundredths)	81.60%		79.26%
Debt securities, at amortized cost [Abstract]
Debt securities, at amortized cost	7,323,000		7,214,000
Percent of debt securities at amortized cost to total investments (in hundredths)	2.98%		3.27%
Total debt securities	207,662,000		182,126,000
Percent of debt securities to total investments (in hundredths)	84.58%		82.53%
Equity securities, at market	37,857,000		38,584,000
Percentage of equity securities to total investments (in hundredths)	15.42%		17.47%
Total investments	245,519,000		220,710,000
Total investments (in hundredths)	100.00%		100.00%
Realized gains (losses) [Abstract]
Total realized gains	1,745,000	1,322,000
Fair Value at Sale of securities with realized gains	14,483,000	23,680,000
Total realized losses	(414,000)	(509,000)
Fair Value at Sale of securities with realized losses	5,037,000	17,099,000
Net realized gains (losses) on investments	1,331,000	813,000
Fair Value of Investments at Sale	19,520,000	40,779,000
Debt Securities - Available-For-Sale [Abstract]
Debt Securities - Available-For-Sale, Amortized Cost	198,594,000		174,511,000
Debt Securities - Available-For-Sale, Gross Unrealized Gains	2,363,000		1,727,000
Debt Securities - Available-For-Sale, Gross Unrealized Losses	618,000		1,326,000
Debt Securities - Available-For-Sale, Estimated Fair Value	200,339,000		174,912,000
Debt Securities - Held-To-Maturity [Abstract]
Debt Securities - Held-To-Maturity, Amortized Cost	7,323,000		7,214,000
Debt Securities - Held-To-Maturity, Gross Unrealized Gains	65,000		54,000
Debt Securities - Held-To-Maturity, Gross Unrealized Losses	262,000		344,000
Debt Securities - Held-To-Maturity, Estimated Fair Value	7,126,000		6,924,000
Equity securities - common stocks, Amortized Cost	29,160,000		29,423,000
Equity securities - common stocks, Gross Unrealized Gains	8,868,000		9,436,000
Equity securities - common stocks, Gross Unrealized Losses	171,000		275,000
Equity securities - common stocks, Estimated Fair Value	37,857,000		38,584,000
Continuous unrealized loss position [Abstract]
Debt/Equity securities, Unrealized (Losses)	789,000		1,601,000
Debt/Equity securities, Less than 12 months	771,000		1,460,000
Debt/Equity securities, 12 months or longer	18,000		141,000
Amortized Cost [Abstract]
Due in one year or less, Amortized Cost	10,785,000		5,161,000
Due after one through five years, Amortized Cost	125,918,000		113,027,000
Due after five through ten years, Amortized Cost	68,323,000		62,656,000
Due after ten years, Amortized Cost	891,000		881,000
Total Amortized Cost	205,917,000		181,725,000
Estimated Fair Value [Abstract]
Due in one year or less, Estimated Fair Value	10,819,000		5,181,000
Due after one through five years, Estimated Fair Value	126,961,000		113,561,000
Due after five through ten years, Estimated Fair Value	68,781,000		62,220,000
Due after ten years, Estimated Fair Value	904,000		874,000
Total Estimated Fair Value	207,465,000		181,836,000
Investment income [Abstract]
Interest on debt securities	895,000	714,000
Dividends on equity securities	111,000	80,000
Interest on cash and cash equivalents	1,000	0
Total investment income	1,007,000	794,000
Net realized gains	1,331,000	813,000
Proceeds from sales and maturity of marketable securities	20,900,000	44,200,000
Net realized and unrealized investment gains (losses) [Abstract]
Net realized gains	1,331,000	813,000
Net unrealized gains	10,442,000	7,706,000
Diverse Industries Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Percentage of debt securities to total debt portfolio (in hundredths)	82.00%		83.00%
United States Government Bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Percentage of debt securities to total debt portfolio (in hundredths)	18.00%		17.00%
Diverse Industries Equity Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Percentage of equity holdings to total equity portfolio (in hundredths)	88.00%		91.00%
Mutual Funds [Member]
Schedule of Available-for-sale Securities [Line Items]
Percentage of equity holdings to total equity portfolio (in hundredths)	12.00%		9.00%
United States Government Obligations and Authorities [Member]
Schedule of Available-for-sale Securities [Line Items]
Debt maturities, held to maturity, at amortized cost	4,187,000		4,630,000
Debt securities, at market [Abstract]
Debt securities, at market	33,655,000		27,209,000
Percent of debt securities at market to total investments (in hundredths)	13.71%		12.33%
Debt securities, at amortized cost [Abstract]
Debt securities, at amortized cost	4,187,000		4,630,000
Percent of debt securities at amortized cost to total investments (in hundredths)	1.71%		2.10%
Debt Securities - Available-For-Sale [Abstract]
Debt Securities - Available-For-Sale, Amortized Cost	33,631,000		27,422,000
Debt Securities - Available-For-Sale, Gross Unrealized Gains	237,000		186,000
Debt Securities - Available-For-Sale, Gross Unrealized Losses	213,000		399,000
Debt Securities - Available-For-Sale, Estimated Fair Value	33,655,000		27,209,000
Debt Securities - Held-To-Maturity [Abstract]
Debt Securities - Held-To-Maturity, Amortized Cost	4,187,000		4,630,000
Debt Securities - Held-To-Maturity, Gross Unrealized Gains	33,000		32,000
Debt Securities - Held-To-Maturity, Gross Unrealized Losses	255,000		326,000
Debt Securities - Held-To-Maturity, Estimated Fair Value	3,965,000		4,336,000
Continuous unrealized loss position [Abstract]
Debt/Equity securities, Unrealized (Losses)	213,000		399,000
Debt/Equity securities, Less than 12 months	207,000		391,000
Debt/Equity securities, 12 months or longer	6,000		8,000
Obligations of States and Political Subdivisions [Member]
Debt securities, at market [Abstract]
Debt securities, at market	58,149,000		52,064,000
Percent of debt securities at market to total investments (in hundredths)	23.68%		23.59%
Debt Securities - Available-For-Sale [Abstract]
Debt Securities - Available-For-Sale, Amortized Cost	57,742,000		51,883,000
Debt Securities - Available-For-Sale, Gross Unrealized Gains	471,000		303,000
Debt Securities - Available-For-Sale, Gross Unrealized Losses	64,000		122,000
Debt Securities - Available-For-Sale, Estimated Fair Value	58,149,000		52,064,000
Continuous unrealized loss position [Abstract]
Debt/Equity securities, Unrealized (Losses)	64,000		122,000
Debt/Equity securities, Less than 12 months	64,000		122,000
Debt/Equity securities, 12 months or longer	0		0
Corporate [Member]
Schedule of Available-for-sale Securities [Line Items]
Debt maturities, held to maturity, at amortized cost	2,908,000		2,475,000
Debt securities, at market [Abstract]
Debt securities, at market	100,086,000		91,941,000
Percent of debt securities at market to total investments (in hundredths)	40.77%		41.66%
Debt securities, at amortized cost [Abstract]
Debt securities, at amortized cost	2,908,000		2,475,000
Percent of debt securities at amortized cost to total investments (in hundredths)	1.18%		1.12%
Debt Securities - Available-For-Sale [Abstract]
Debt Securities - Available-For-Sale, Amortized Cost	98,794,000		91,475,000
Debt Securities - Available-For-Sale, Gross Unrealized Gains	1,615,000		1,233,000
Debt Securities - Available-For-Sale, Gross Unrealized Losses	323,000		767,000
Debt Securities - Available-For-Sale, Estimated Fair Value	100,086,000		91,941,000
Debt Securities - Held-To-Maturity [Abstract]
Debt Securities - Held-To-Maturity, Amortized Cost	2,908,000		2,475,000
Debt Securities - Held-To-Maturity, Gross Unrealized Gains	32,000		22,000
Debt Securities - Held-To-Maturity, Gross Unrealized Losses	6,000		17,000
Debt Securities - Held-To-Maturity, Estimated Fair Value	2,934,000		2,480,000
Continuous unrealized loss position [Abstract]
Debt/Equity securities, Unrealized (Losses)	323,000		767,000
Debt/Equity securities, Less than 12 months	316,000		761,000
Debt/Equity securities, 12 months or longer	7,000		6,000
Debt Securities [Member]
Realized gains (losses) [Abstract]
Total realized gains	135,000	1,133,000
Fair Value at Sale of securities with realized gains	9,668,000	22,601,000
Total realized losses	(70,000)	(409,000)
Fair Value at Sale of securities with realized losses	3,699,000	16,476,000
Continuous unrealized loss position [Abstract]
Debt/Equity securities, Unrealized (Losses)	618,000		1,326,000
Debt/Equity securities, Less than 12 months	605,000		1,312,000
Debt/Equity securities, 12 months or longer	13,000		14,000
Investment income [Abstract]
Net realized gains	65,000	724,000
Net realized and unrealized investment gains (losses) [Abstract]
Net realized gains	65,000	724,000
Net unrealized gains	1,745,000	3,275,000
Equity Securities [Member]
Realized gains (losses) [Abstract]
Total realized gains	1,610,000	189,000
Fair Value at Sale of securities with realized gains	4,815,000	1,079,000
Total realized losses	(344,000)	(100,000)
Fair Value at Sale of securities with realized losses	1,338,000	623,000
Investment income [Abstract]
Net realized gains	1,266,000	89,000
Net realized and unrealized investment gains (losses) [Abstract]
Net realized gains	1,266,000	89,000
Net unrealized gains	8,697,000	4,431,000
International [Member]
Schedule of Available-for-sale Securities [Line Items]
Debt maturities, held to maturity, at amortized cost	228,000		109,000
Debt securities, at market [Abstract]
Debt securities, at market	8,449,000		3,698,000
Percent of debt securities at market to total investments (in hundredths)	3.44%		1.68%
Debt securities, at amortized cost [Abstract]
Debt securities, at amortized cost	228,000		109,000
Percent of debt securities at amortized cost to total investments (in hundredths)	0.09%		0.05%
Debt Securities - Available-For-Sale [Abstract]
Debt Securities - Available-For-Sale, Amortized Cost	8,427,000		3,731,000
Debt Securities - Available-For-Sale, Gross Unrealized Gains	40,000		5,000
Debt Securities - Available-For-Sale, Gross Unrealized Losses	18,000		38,000
Debt Securities - Available-For-Sale, Estimated Fair Value	8,449,000		3,698,000
Debt Securities - Held-To-Maturity [Abstract]
Debt Securities - Held-To-Maturity, Amortized Cost	228,000		109,000
Debt Securities - Held-To-Maturity, Gross Unrealized Gains	0		0
Debt Securities - Held-To-Maturity, Gross Unrealized Losses	1,000		1,000
Debt Securities - Held-To-Maturity, Estimated Fair Value	227,000		108,000
Continuous unrealized loss position [Abstract]
Debt/Equity securities, Unrealized (Losses)	18,000		38,000
Debt/Equity securities, Less than 12 months	18,000		38,000
Debt/Equity securities, 12 months or longer	0		0
Common Stock [Member]
Continuous unrealized loss position [Abstract]
Debt/Equity securities, Unrealized (Losses)	171,000		275,000
Debt/Equity securities, Less than 12 months	166,000		148,000
Debt/Equity securities, 12 months or longer	5,000		127,000
United States Treasury Notes [Member] | Federated National [Member]
Estimated Fair Value [Abstract]
Due after one through five years, Estimated Fair Value	62,239		62,490
Due after five through ten years, Estimated Fair Value	$ 2,191,923		$ 2,193,814