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
Investments [Abstract]
Increase in total investments			$ 98,500,000
Percentage increase in investments (in hundredths)			44.60%
Total investments	319,202,000		319,202,000		220,710,000
Increase in gross premiums written			99,500,000
Percentage increase in gross premiums written (in hundredths)			63.60%
Homeowners' Gross Premiums Written	83,300,000	54,100,000	255,900,000	156,400,000
Increase in homeowners gross written transferred to investment accounts			59,000,000
Ratio of available-for-sale securities to total investments (in hundredths)	98.00%		98.00%		98.00%
Debt securities at amortized cost [Line Items]
Debt maturities, held to maturity, at amortized cost	7,352,000		7,352,000		7,214,000
Bond portfolio reclassified between available-for-sale and held-to-maturity			0	100,000
Debt securities, at market [Abstract]
Debt securities, at market	275,387,000		275,387,000		174,912,000
Percent of debt securities at market to total investments (in hundredths)			86.27%		79.26%
Debt securities, at amortized cost [Abstract]
Debt securities, at amortized cost	7,352,000		7,352,000		7,214,000
Percent of debt securities at amortized cost to total investments (in hundredths)			2.31%		3.27%
Total debt securities	282,739,000		282,739,000		182,126,000
Percent of debt securities to total investments (in hundredths)			88.58%		82.53%
Equity securities, at market	36,463,000		36,463,000		38,584,000
Percentage of equity securities to total investments (in hundredths)			11.42%		17.47%
Total investments	319,202,000		319,202,000		220,710,000
Total investments (in hundredths)			100.00%		100.00%
Realized gains (losses) [Abstract]
Total realized gains	694,000	1,476,000	4,546,000	4,032,000
Fair Value at Sale of securities with realized gains	18,055,000	11,802,000	51,252,000	46,981,000
Total realized losses	(35,000)	(696,000)	(499,000)	(1,552,000)
Fair Value at Sale of securities with realized losses	1,745,000	15,933,000	9,972,000	40,542,000
Net realized gains (losses) on investments	659,000	780,000	4,047,000	2,480,000
Fair Value of Investments at Sale	19,800,000	27,735,000	61,224,000	87,523,000
Debt Securities - Available-For-Sale [Abstract]
Debt Securities - Available-For-Sale, Amortized Cost	272,710,000		272,710,000		174,511,000
Debt Securities - Available-For-Sale, Gross Unrealized Gains	3,230,000		3,230,000		1,727,000
Debt Securities - Available-For-Sale, Gross Unrealized Losses	553,000		553,000		1,326,000
Debt Securities - Available-For-Sale, Estimated Fair Value	275,387,000		275,387,000		174,912,000
Debt Securities - Held-To-Maturity [Abstract]
Debt Securities - Held-To-Maturity, Amortized Cost	7,352,000		7,352,000		7,214,000
Debt Securities - Held-To-Maturity, Gross Unrealized Gains	65,000		65,000		54,000
Debt Securities - Held-To-Maturity, Gross Unrealized Losses	246,000		246,000		344,000
Debt Securities - Held-To-Maturity, Estimated Fair Value	7,171,000		7,171,000		6,924,000
Equity securities - common stocks, Amortized Cost	29,220,000		29,220,000		29,423,000
Equity securities - common stocks, Gross Unrealized Gains	7,886,000		7,886,000		9,436,000
Equity securities - common stocks, Gross Unrealized Loss	643,000		643,000		275,000
Equity securities - common stocks, Estimated Fair Value	36,463,000		36,463,000		38,584,000
Continuous unrealized loss position [Abstract]
Debt/Equity securities, Unrealized (Losses)	1,196,000		1,196,000		1,601,000
Debt/Equity securities, Less than 12 months	943,000		943,000		1,460,000
Debt/Equity securities, 12 months or longer	253,000		253,000		141,000
Amortized Cost [Abstract]
Due in one year or less, Amortized Cost	13,702,000		13,702,000		5,161,000
Due after one through five years, Amortized Cost	176,615,000		176,615,000		113,027,000
Due after five through ten years, Amortized Cost	89,719,000		89,719,000		62,656,000
Due after ten years, Amortized Cost	26,000		26,000		881,000
Total Amortized Cost	280,062,000		280,062,000		181,725,000
Estimated Fair Value [Abstract]
Due in one year or less, Estimated Fair Value	13,734,000		13,734,000		5,181,000
Due after one through five years, Estimated Fair Value	177,950,000		177,950,000		113,561,000
Due after five through ten years, Estimated Fair Value	90,841,000		90,841,000		62,220,000
Due after ten years, Estimated Fair Value	33,000		33,000		874,000
Total Estimated Fair Value	282,558,000		282,558,000		181,836,000
Treasury notes maturity date, maturing in one through five years			Dec. 31, 2016		Dec. 31, 2016
Treasury notes maturity date, maturing in five through ten years			Dec. 31, 2022		Dec. 31, 2022
Investment income [Abstract]
Interest on debt securities	1,328,000	691,000	3,432,000	2,059,000
Dividends on equity securities	121,000	108,000	324,000	320,000
Interest on cash and cash equivalents	1,000	1,000	2,000	3,000
Total investment income	1,450,000	800,000	3,758,000	2,382,000
Net realized gains	659,000	780,000	4,047,000	2,480,000
Proceeds from sales and maturity of marketable securities	21,800,000	28,700,000	65,869,000	93,079,000
Net realized and unrealized investment gains (losses) [Abstract]
Net realized gains	659,000	780,000	4,047,000	2,480,000
Net unrealized gains			9,920,000		9,562,000
Diverse Industries Debt Securities [Member]
Debt securities at amortized cost [Line Items]
Percentage of debt securities to total debt portfolio (in hundredths)			79.00%		83.00%
United States Government Bonds [Member]
Debt securities at amortized cost [Line Items]
Percentage of debt securities to total debt portfolio (in hundredths)			21.00%		17.00%
Diverse Industries Equity Securities [Member]
Debt securities at amortized cost [Line Items]
Percentage of equity holdings to total equity portfolio (in hundredths)			87.00%		91.00%
Mutual Funds [Member]
Debt securities at amortized cost [Line Items]
Percentage of equity holdings to total equity portfolio (in hundredths)			13.00%		9.00%
United States Government Obligations and Authorities [Member]
Debt securities at amortized cost [Line Items]
Debt maturities, held to maturity, at amortized cost	4,433,000		4,433,000		4,630,000
Debt securities, at market [Abstract]
Debt securities, at market	55,643,000		55,643,000		27,209,000
Percent of debt securities at market to total investments (in hundredths)			17.43%		12.33%
Debt securities, at amortized cost [Abstract]
Debt securities, at amortized cost	4,433,000		4,433,000		4,630,000
Percent of debt securities at amortized cost to total investments (in hundredths)			1.39%		2.10%
Debt Securities - Available-For-Sale [Abstract]
Debt Securities - Available-For-Sale, Amortized Cost	55,371,000		55,371,000		27,422,000
Debt Securities - Available-For-Sale, Gross Unrealized Gains	469,000		469,000		186,000
Debt Securities - Available-For-Sale, Gross Unrealized Losses	197,000		197,000		399,000
Debt Securities - Available-For-Sale, Estimated Fair Value	55,643,000		55,643,000		27,209,000
Debt Securities - Held-To-Maturity [Abstract]
Debt Securities - Held-To-Maturity, Amortized Cost	4,433,000		4,433,000		4,630,000
Debt Securities - Held-To-Maturity, Gross Unrealized Gains	31,000		31,000		32,000
Debt Securities - Held-To-Maturity, Gross Unrealized Losses	243,000		243,000		326,000
Debt Securities - Held-To-Maturity, Estimated Fair Value	4,221,000		4,221,000		4,336,000
Continuous unrealized loss position [Abstract]
Debt/Equity securities, Unrealized (Losses)	197,000		197,000		399,000
Debt/Equity securities, Less than 12 months	89,000		89,000		391,000
Debt/Equity securities, 12 months or longer	108,000		108,000		8,000
Obligations of States and Political Subdivisions [Member]
Debt securities, at market [Abstract]
Debt securities, at market	91,641,000		91,641,000		52,064,000
Percent of debt securities at market to total investments (in hundredths)			28.71%		23.59%
Debt Securities - Available-For-Sale [Abstract]
Debt Securities - Available-For-Sale, Amortized Cost	90,597,000		90,597,000		51,883,000
Debt Securities - Available-For-Sale, Gross Unrealized Gains	1,091,000		1,091,000		303,000
Debt Securities - Available-For-Sale, Gross Unrealized Losses	47,000		47,000		122,000
Debt Securities - Available-For-Sale, Estimated Fair Value	91,641,000		91,641,000		52,064,000
Continuous unrealized loss position [Abstract]
Debt/Equity securities, Unrealized (Losses)	47,000		47,000		122,000
Debt/Equity securities, Less than 12 months	39,000		39,000		122,000
Debt/Equity securities, 12 months or longer	8,000		8,000		0
Corporate [Member]
Debt securities at amortized cost [Line Items]
Debt maturities, held to maturity, at amortized cost	2,673,000		2,673,000		2,475,000
Debt securities, at market [Abstract]
Debt securities, at market	117,150,000		117,150,000		91,941,000
Percent of debt securities at market to total investments (in hundredths)			36.70%		41.66%
Debt securities, at amortized cost [Abstract]
Debt securities, at amortized cost	2,673,000		2,673,000		2,475,000
Percent of debt securities at amortized cost to total investments (in hundredths)			0.84%		1.12%
Debt Securities - Available-For-Sale [Abstract]
Debt Securities - Available-For-Sale, Amortized Cost	115,833,000		115,833,000		91,475,000
Debt Securities - Available-For-Sale, Gross Unrealized Gains	1,613,000		1,613,000		1,233,000
Debt Securities - Available-For-Sale, Gross Unrealized Losses	296,000		296,000		767,000
Debt Securities - Available-For-Sale, Estimated Fair Value	117,150,000		117,150,000		91,941,000
Debt Securities - Held-To-Maturity [Abstract]
Debt Securities - Held-To-Maturity, Amortized Cost	2,673,000		2,673,000		2,475,000
Debt Securities - Held-To-Maturity, Gross Unrealized Gains	33,000		33,000		22,000
Debt Securities - Held-To-Maturity, Gross Unrealized Losses	2,000		2,000		17,000
Debt Securities - Held-To-Maturity, Estimated Fair Value	2,704,000		2,704,000		2,480,000
Continuous unrealized loss position [Abstract]
Debt/Equity securities, Unrealized (Losses)	296,000		296,000		767,000
Debt/Equity securities, Less than 12 months	188,000		188,000		761,000
Debt/Equity securities, 12 months or longer	108,000		108,000		6,000
Debt Securities [Member]
Realized gains (losses) [Abstract]
Total realized gains	241,000	202,000	533,000	1,595,000
Fair Value at Sale of securities with realized gains	16,413,000	6,183,000	38,657,000	36,918,000
Total realized losses	(20,000)	(421,000)	(118,000)	(922,000)
Fair Value at Sale of securities with realized losses	1,627,000	14,462,000	8,333,000	37,493,000
Continuous unrealized loss position [Abstract]
Debt/Equity securities, Unrealized (Losses)	553,000		553,000		1,326,000
Debt/Equity securities, Less than 12 months	329,000		329,000		1,312,000
Debt/Equity securities, 12 months or longer	224,000		224,000		14,000
Investment income [Abstract]
Net realized gains	221,000	(219,000)	415,000	673,000
Net realized and unrealized investment gains (losses) [Abstract]
Net realized gains	221,000	(219,000)	415,000	673,000
Net unrealized gains			2,677,000		401,000
Equity Securities [Member]
Realized gains (losses) [Abstract]
Total realized gains	453,000	1,274,000	4,013,000	2,437,000
Fair Value at Sale of securities with realized gains	1,642,000	5,619,000	12,595,000	10,063,000
Total realized losses	(15,000)	(275,000)	(381,000)	(630,000)
Fair Value at Sale of securities with realized losses	118,000	1,471,000	1,639,000	3,049,000
Investment income [Abstract]
Net realized gains	438,000	999,000	3,632,000	1,807,000
Net realized and unrealized investment gains (losses) [Abstract]
Net realized gains	438,000	999,000	3,632,000	1,807,000
Net unrealized gains			7,243,000		9,161,000
International [Member]
Debt securities at amortized cost [Line Items]
Debt maturities, held to maturity, at amortized cost	246,000		246,000		109,000
Debt securities, at market [Abstract]
Debt securities, at market	10,953,000		10,953,000		3,698,000
Percent of debt securities at market to total investments (in hundredths)			3.43%		1.68%
Debt securities, at amortized cost [Abstract]
Debt securities, at amortized cost	246,000		246,000		109,000
Percent of debt securities at amortized cost to total investments (in hundredths)			0.08%		0.05%
Debt Securities - Available-For-Sale [Abstract]
Debt Securities - Available-For-Sale, Amortized Cost	10,909,000		10,909,000		3,731,000
Debt Securities - Available-For-Sale, Gross Unrealized Gains	57,000		57,000		5,000
Debt Securities - Available-For-Sale, Gross Unrealized Losses	13,000		13,000		38,000
Debt Securities - Available-For-Sale, Estimated Fair Value	10,953,000		10,953,000		3,698,000
Debt Securities - Held-To-Maturity [Abstract]
Debt Securities - Held-To-Maturity, Amortized Cost	246,000		246,000		109,000
Debt Securities - Held-To-Maturity, Gross Unrealized Gains	1,000		1,000		0
Debt Securities - Held-To-Maturity, Gross Unrealized Losses	1,000		1,000		1,000
Debt Securities - Held-To-Maturity, Estimated Fair Value	246,000		246,000		108,000
Continuous unrealized loss position [Abstract]
Debt/Equity securities, Unrealized (Losses)	13,000		13,000		38,000
Debt/Equity securities, Less than 12 months	13,000		13,000		38,000
Debt/Equity securities, 12 months or longer	0		0		0
Common Stock [Member]
Continuous unrealized loss position [Abstract]
Debt/Equity securities, Unrealized (Losses)	643,000		643,000		275,000
Debt/Equity securities, Less than 12 months	614,000		614,000		148,000
Debt/Equity securities, 12 months or longer	29,000		29,000		127,000
United States Treasury Notes [Member] | Federated National [Member]
Estimated Fair Value [Abstract]
Due after one through five years, Estimated Fair Value	61,727		61,727		62,490
Due after five through ten years, Estimated Fair Value	$ 2,220,344		$ 2,220,344		$ 2,193,814