Investments (Details) (USD $)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Investments [Abstract]
Increase in total investments			$ 71,400,000
Percentage increase in investments (in hundredths)			32.30%
Increase in gross premiums written			70,300,000
Percentage increase in gross premiums written (in hundredths)			68.70%
Homeowners' Gross Premiums Written	98,600,000	62,600,000	172,600,000	102,300,000
Increase in homeowners gross written transferred to investment accounts			59,000,000
Ratio of available-for-sale securities to total investments (in hundredths)	97.00%		97.00%		97.00%
Schedule of Available-for-sale Securities [Line Items]
Debt maturities, held to maturity, at amortized cost	7,498,000		7,498,000		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	247,947,000		247,947,000		174,912,000
Percent of debt securities at market to total investments (in hundredths)			84.89%		79.26%
Debt securities, at amortized cost [Abstract]
Debt securities, at amortized cost	7,498,000		7,498,000		7,214,000
Percent of debt securities at amortized cost to total investments (in hundredths)			2.57%		3.27%
Total debt securities	255,445,000		255,445,000		182,126,000
Percent of debt securities to total investments (in hundredths)			87.46%		82.53%
Equity securities, at market	36,630,000		36,630,000		38,584,000
Percentage of equity securities to total investments (in hundredths)			12.54%		17.47%
Total investments	292,075,000		292,075,000		220,710,000
Total investments (in hundredths)			100.00%		100.00%
Realized gains (losses) [Abstract]
Total realized gains	2,106,000	1,233,000	3,852,000	2,555,000
Fair Value at Sale of securities with realized gains	18,714,000	11,499,000	33,197,000	35,179,000
Total realized losses	(50,000)	(346,000)	(464,000)	(855,000)
Fair Value at Sale of securities with realized losses	3,190,000	7,510,000	8,227,000	24,609,000
Net realized gains (losses) on investments	2,056,000	887,000	3,388,000	1,700,000
Fair Value of Investments at Sale	21,904,000	19,009,000	41,424,000	59,788,000
Debt Securities - Available-For-Sale [Abstract]
Debt Securities - Available-For-Sale, Amortized Cost	244,286,000		244,286,000		174,511,000
Debt Securities - Available-For-Sale, Gross Unrealized Gains	3,894,000		3,894,000		1,727,000
Debt Securities - Available-For-Sale, Gross Unrealized Losses	233,000		233,000		1,326,000
Debt Securities - Available-For-Sale, Estimated Fair Value	247,947,000		247,947,000		174,912,000
Debt Securities - Held-To-Maturity [Abstract]
Debt Securities - Held-To-Maturity, Amortized Cost	7,498,000		7,498,000		7,214,000
Debt Securities - Held-To-Maturity, Gross Unrealized Gains	91,000		91,000		54,000
Debt Securities - Held-To-Maturity, Gross Unrealized Losses	178,000		178,000		344,000
Debt Securities - Held-To-Maturity, Estimated Fair Value	7,411,000		7,411,000		6,924,000
Equity securities - common stocks, Amortized Cost	28,487,000		28,487,000		29,423,000
Equity securities - common stocks, Gross Unrealized Gains	8,407,000		8,407,000		9,436,000
Equity securities - common stocks, Gross Unrealized Loss	264,000		264,000		275,000
Equity securities - common stocks, Estimated Fair Value	36,630,000		36,630,000		38,584,000
Continuous unrealized loss position [Abstract]
Debt/Equity securities, Unrealized (Losses)	497,000		497,000		1,601,000
Debt/Equity securities, Less than 12 months	299,000		299,000		1,460,000
Debt/Equity securities, 12 months or longer	198,000		198,000		141,000
Amortized Cost [Abstract]
Due in one year or less, Amortized Cost	14,999,000		14,999,000		5,161,000
Due after one through five years, Amortized Cost	153,641,000		153,641,000		113,027,000
Due after five through ten years, Amortized Cost	83,118,000		83,118,000		62,656,000
Due after ten years, Amortized Cost	26,000		26,000		881,000
Total Amortized Cost	251,784,000		251,784,000		181,725,000
Estimated Fair Value [Abstract]
Due in one year or less, Estimated Fair Value	15,060,000		15,060,000		5,181,000
Due after one through five years, Estimated Fair Value	155,455,000		155,455,000		113,561,000
Due after five through ten years, Estimated Fair Value	84,810,000		84,810,000		62,220,000
Due after ten years, Estimated Fair Value	33,000		33,000		874,000
Total Estimated Fair Value	255,358,000		255,358,000		181,836,000
Investment income [Abstract]
Interest on debt securities	1,209,000	654,000	2,104,000	1,369,000
Dividends on equity securities	92,000	132,000	203,000	211,000
Interest on cash and cash equivalents	1,000	2,000	1,000	2,000
Total investment income	1,302,000	788,000	2,308,000	1,582,000
Net realized gains	2,056,000	887,000	3,388,000	1,700,000
Proceeds from sales and maturity of marketable securities	23,100,000	20,200,000	44,081,000	64,354,000
Net realized and unrealized investment gains (losses) [Abstract]
Net realized gains	2,056,000	887,000	3,388,000	1,700,000
Net unrealized gains			11,804,000		9,562,000
Diverse Industries Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Percentage of debt securities to total debt portfolio (in hundredths)			81.00%		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)			19.00%		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)			87.00%		91.00%
Mutual Funds [Member]
Schedule of Available-for-sale Securities [Line Items]
Percentage of equity holdings to total equity portfolio (in hundredths)			13.00%		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	4,257,000		4,257,000		4,630,000
Debt securities, at market [Abstract]
Debt securities, at market	43,823,000		43,823,000		27,209,000
Percent of debt securities at market to total investments (in hundredths)			15.00%		12.33%
Debt securities, at amortized cost [Abstract]
Debt securities, at amortized cost	4,257,000		4,257,000		4,630,000
Percent of debt securities at amortized cost to total investments (in hundredths)			1.46%		2.10%
Debt Securities - Available-For-Sale [Abstract]
Debt Securities - Available-For-Sale, Amortized Cost	43,322,000		43,322,000		27,422,000
Debt Securities - Available-For-Sale, Gross Unrealized Gains	591,000		591,000		186,000
Debt Securities - Available-For-Sale, Gross Unrealized Losses	90,000		90,000		399,000
Debt Securities - Available-For-Sale, Estimated Fair Value	43,823,000		43,823,000		27,209,000
Debt Securities - Held-To-Maturity [Abstract]
Debt Securities - Held-To-Maturity, Amortized Cost	4,257,000		4,257,000		4,630,000
Debt Securities - Held-To-Maturity, Gross Unrealized Gains	36,000		36,000		32,000
Debt Securities - Held-To-Maturity, Gross Unrealized Losses	176,000		176,000		326,000
Debt Securities - Held-To-Maturity, Estimated Fair Value	4,117,000		4,117,000		4,336,000
Continuous unrealized loss position [Abstract]
Debt/Equity securities, Unrealized (Losses)	90,000		90,000		399,000
Debt/Equity securities, Less than 12 months	1,000		1,000		391,000
Debt/Equity securities, 12 months or longer	89,000		89,000		8,000
Obligations of States and Political Subdivisions [Member]
Debt securities, at market [Abstract]
Debt securities, at market	78,100,000		78,100,000		52,064,000
Percent of debt securities at market to total investments (in hundredths)			26.74%		23.59%
Debt Securities - Available-For-Sale [Abstract]
Debt Securities - Available-For-Sale, Amortized Cost	77,191,000		77,191,000		51,883,000
Debt Securities - Available-For-Sale, Gross Unrealized Gains	937,000		937,000		303,000
Debt Securities - Available-For-Sale, Gross Unrealized Losses	28,000		28,000		122,000
Debt Securities - Available-For-Sale, Estimated Fair Value	78,100,000		78,100,000		52,064,000
Continuous unrealized loss position [Abstract]
Debt/Equity securities, Unrealized (Losses)	28,000		28,000		122,000
Debt/Equity securities, Less than 12 months	12,000		12,000		122,000
Debt/Equity securities, 12 months or longer	16,000		16,000		0
Corporate [Member]
Schedule of Available-for-sale Securities [Line Items]
Debt maturities, held to maturity, at amortized cost	2,979,000		2,979,000		2,475,000
Debt securities, at market [Abstract]
Debt securities, at market	115,187,000		115,187,000		91,941,000
Percent of debt securities at market to total investments (in hundredths)			39.44%		41.66%
Debt securities, at amortized cost [Abstract]
Debt securities, at amortized cost	2,979,000		2,979,000		2,475,000
Percent of debt securities at amortized cost to total investments (in hundredths)			1.02%		1.12%
Debt Securities - Available-For-Sale [Abstract]
Debt Securities - Available-For-Sale, Amortized Cost	113,018,000		113,018,000		91,475,000
Debt Securities - Available-For-Sale, Gross Unrealized Gains	2,275,000		2,275,000		1,233,000
Debt Securities - Available-For-Sale, Gross Unrealized Losses	106,000		106,000		767,000
Debt Securities - Available-For-Sale, Estimated Fair Value	115,187,000		115,187,000		91,941,000
Debt Securities - Held-To-Maturity [Abstract]
Debt Securities - Held-To-Maturity, Amortized Cost	2,979,000		2,979,000		2,475,000
Debt Securities - Held-To-Maturity, Gross Unrealized Gains	53,000		53,000		22,000
Debt Securities - Held-To-Maturity, Gross Unrealized Losses	1,000		1,000		17,000
Debt Securities - Held-To-Maturity, Estimated Fair Value	3,031,000		3,031,000		2,480,000
Continuous unrealized loss position [Abstract]
Debt/Equity securities, Unrealized (Losses)	106,000		106,000		767,000
Debt/Equity securities, Less than 12 months	23,000		23,000		761,000
Debt/Equity securities, 12 months or longer	83,000		83,000		6,000
Debt Securities [Member]
Realized gains (losses) [Abstract]
Total realized gains	157,000	260,000	292,000	1,393,000
Fair Value at Sale of securities with realized gains	12,576,000	8,134,000	22,244,000	30,735,000
Total realized losses	(28,000)	(91,000)	(98,000)	(500,000)
Fair Value at Sale of securities with realized losses	3,007,000	6,555,000	6,706,000	23,031,000
Continuous unrealized loss position [Abstract]
Debt/Equity securities, Unrealized (Losses)	233,000		233,000		1,326,000
Debt/Equity securities, Less than 12 months	45,000		45,000		1,312,000
Debt/Equity securities, 12 months or longer	188,000		188,000		14,000
Investment income [Abstract]
Net realized gains	129,000	169,000	194,000	893,000
Net realized and unrealized investment gains (losses) [Abstract]
Net realized gains	129,000	169,000	194,000	893,000
Net unrealized gains			3,661,000		401,000
Equity Securities [Member]
Realized gains (losses) [Abstract]
Total realized gains	1,949,000	973,000	3,560,000	1,162,000
Fair Value at Sale of securities with realized gains	6,138,000	3,365,000	10,953,000	4,444,000
Total realized losses	(22,000)	(255,000)	(366,000)	(355,000)
Fair Value at Sale of securities with realized losses	183,000	955,000	1,521,000	1,578,000
Investment income [Abstract]
Net realized gains	1,927,000	718,000	3,194,000	807,000
Net realized and unrealized investment gains (losses) [Abstract]
Net realized gains	1,927,000	718,000	3,194,000	807,000
Net unrealized gains			8,143,000		9,161,000
International [Member]
Schedule of Available-for-sale Securities [Line Items]
Debt maturities, held to maturity, at amortized cost	262,000		262,000		109,000
Debt securities, at market [Abstract]
Debt securities, at market	10,837,000		10,837,000		3,698,000
Percent of debt securities at market to total investments (in hundredths)			3.71%		1.68%
Debt securities, at amortized cost [Abstract]
Debt securities, at amortized cost	262,000		262,000		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	10,755,000		10,755,000		3,731,000
Debt Securities - Available-For-Sale, Gross Unrealized Gains	91,000		91,000		5,000
Debt Securities - Available-For-Sale, Gross Unrealized Losses	9,000		9,000		38,000
Debt Securities - Available-For-Sale, Estimated Fair Value	10,837,000		10,837,000		3,698,000
Debt Securities - Held-To-Maturity [Abstract]
Debt Securities - Held-To-Maturity, Amortized Cost	262,000		262,000		109,000
Debt Securities - Held-To-Maturity, Gross Unrealized Gains	2,000		2,000		0
Debt Securities - Held-To-Maturity, Gross Unrealized Losses	1,000		1,000		1,000
Debt Securities - Held-To-Maturity, Estimated Fair Value	263,000		263,000		108,000
Continuous unrealized loss position [Abstract]
Debt/Equity securities, Unrealized (Losses)	9,000		9,000		38,000
Debt/Equity securities, Less than 12 months	9,000		9,000		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)	264,000		264,000		275,000
Debt/Equity securities, Less than 12 months	254,000		254,000		148,000
Debt/Equity securities, 12 months or longer	10,000		10,000		127,000
United States Treasury Notes [Member] | Federated National [Member]
Estimated Fair Value [Abstract]
Due after one through five years, Estimated Fair Value	61,984		61,984		62,490
Due after five through ten years, Estimated Fair Value	$ 2,214,639		$ 2,214,639		$ 2,193,814