Investments (Details) (USD $)	3 Months Ended	9 Months Ended	12 Months Ended
Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Investments [Abstract]
Increase in total investments			$ 37,900,000
Percentage increase in investments (in hundredths)			29.20%
Ratio of available-for-sale securities to total investments (in hundredths)	96.00%		96.00%		94.00%
Net realized investment losses charged to operations	0	0	0	44,000,000
Schedule of Available-for-sale Securities [Line Items]
Debt maturities, held to maturity, at amortized cost	7,295,000		7,295,000		7,359,000
Bond portfolio reclassified between available-for-sale and held-to-maturity	0	0	100,000	0
Irrevocable letter of credit	15,000,000		15,000,000
Amount held in trust	1,000,000		1,000,000		1,000,000
Reduction in period of bond portfolio			2 years
Amount shifted from equity to bond portfolio			5,000,000
Debt securities, at market [Abstract]
Debt securities, at market	126,013,000		126,013,000		101,755,000
Percent of debt securities at market to total investments (in hundredths)			74.99%		78.22%
Debt securities, at amortized cost [Abstract]
Debt securities, at amortized cost	7,295,000		7,295,000		7,359,000
Percent of debt securities at amortized cost to total investments (in hundredths)			4.34%		5.65%
Total debt securities	133,308,000		133,308,000		109,114,000
Percent of debt securities to total investments (in hundredths)			79.33%		83.87%
Equity securities, at market	34,734,000		34,734,000		20,982,000
Percentage of equity securities to total investments (in hundredths)			20.67%		16.13%
Total investments	168,042,000		168,042,000		130,096,000
Total investments (in hundredths)			100.00%		100.00%
Realized gains (losses) [Abstract]
Total realized gains	1,476,000	555,000	4,032,000	1,763,000
Fair Value at Sale of securities with realized gains	11,802,000	11,065,000	46,981,000	33,197,000
Total realized losses	(696,000)	(410,000)	(1,552,000)	(1,846,000)
Fair Value at Sale of securities with realized losses	15,933,000	2,319,000	40,542,000	17,123,000
Net realized gains (losses) on investments	780,000	145,000	2,480,000	(83,000)
Fair Value of Investments at Sale	27,735,000	13,384,000	87,523,000	50,320,000
Debt Securities - Available-For-Sale [Abstract]
Debt Securities - Available-For-Sale, Amortized Cost	125,198,000		125,198,000		97,121,000
Debt Securities - Available-For-Sale, Gross Unrealized Gains	1,702,000		1,702,000		4,735,000
Debt Securities - Available-For-Sale, Gross Unrealized Losses	887,000		887,000		101,000
Debt Securities - Available-For-Sale, Estimated Fair Value	126,013,000		126,013,000		101,755,000
Debt Securities - Held-To-Maturity [Abstract]
Debt Securities - Held-To-Maturity, Amortized Cost	7,295,000		7,295,000		7,359,000
Debt Securities - Held-To-Maturity, Gross Unrealized Gains	94,000		94,000		210,000
Debt Securities - Held-To-Maturity, Gross Unrealized Losses	269,000		269,000		15,000
Debt Securities - Held-To-Maturity, Estimated Fair Value	7,120,000		7,120,000		7,554,000
Equity securities - common stocks, Amortized Cost	28,697,000		28,697,000		19,095,000
Equity securities - common stocks, Gross Unrealized Gains	6,433,000		6,433,000		2,505,000
Equity securities - common stocks, Gross Unrealized Losses	396,000		396,000		618,000
Equity securities - common stocks, Estimated Fair Value	34,734,000		34,734,000		20,982,000
Continuous unrealized loss position [Abstract]
Debt/Equity securities, Unrealized (Losses)	1,283,000		1,283,000		719,000
Debt/Equity securities, Less than 12 months	1,131,000		1,131,000		531,000
Debt/Equity securities, 12 months or longer	152,000		152,000		188,000
Amortized Cost [Abstract]
Due in one year or less, Amortized Cost	4,651,000		4,651,000		2,925,000
Due after one through five years, Amortized Cost	81,448,000		81,448,000		49,826,000
Due after five through ten years, Amortized Cost	45,663,000		45,663,000		35,070,000
Due after ten years, Amortized Cost	731,000		731,000		16,659,000
Total Amortized Cost	132,493,000		132,493,000		104,480,000
Estimated Fair Value [Abstract]
Due in one year or less, Estimated Fair Value	4,689,000		4,689,000		2,944,000
Due after one through five years, Estimated Fair Value	82,071,000		82,071,000		51,523,000
Due after five through ten years, Estimated Fair Value	45,626,000		45,626,000		37,182,000
Due after ten years, Estimated Fair Value	747,000		747,000		17,660,000
Total Estimated Fair Value	133,133,000		133,133,000		109,309,000
Investment income [Abstract]
Interest on debt securities	691,000	839,000	2,059,000	2,563,000
Dividends on equity securities	108,000	113,000	320,000	279,000
Interest on cash and cash equivalents	1,000	1,000	3,000	7,000
Total investment income	800,000	953,000	2,382,000	2,849,000
Net realized gains (losses)	780,000	145,000	2,480,000	(83,000)
Proceeds from sales and maturity of marketable securities	28,700,000	17,900,000	93,100,000	60,700,000
Net realized and unrealized investment gains (losses) [Abstract]
Net realized gains (losses)	780,000	145,000	2,480,000	(83,000)
Net unrealized gains	6,852,000	7,610,000	6,852,000	7,610,000
Diverse Industries Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Percentage of debt securities to total debt portfolio (in hundredths)			78.00%		69.00%
United States Government Bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Percentage of debt securities to total debt portfolio (in hundredths)			22.00%		31.00%
Diverse Industries Equity Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Percentage of equity holdings to total equity portfolio (in hundredths)			91.00%		87.00%
Mutual Funds [Member]
Schedule of Available-for-sale Securities [Line Items]
Percentage of equity holdings to total equity portfolio (in hundredths)			9.00%		13.00%
United States Government Obligations and Authorities [Member]
Schedule of Available-for-sale Securities [Line Items]
Debt maturities, held to maturity, at amortized cost	5,150,000		5,150,000		6,016,000
Debt securities, at market [Abstract]
Debt securities, at market	23,745,000		23,745,000		27,392,000
Percent of debt securities at market to total investments (in hundredths)			14.13%		21.06%
Debt securities, at amortized cost [Abstract]
Debt securities, at amortized cost	5,150,000		5,150,000		6,016,000
Percent of debt securities at amortized cost to total investments (in hundredths)			3.07%		4.62%
Debt Securities - Available-For-Sale [Abstract]
Debt Securities - Available-For-Sale, Amortized Cost	23,713,000		23,713,000		26,825,000
Debt Securities - Available-For-Sale, Gross Unrealized Gains	227,000		227,000		632,000
Debt Securities - Available-For-Sale, Gross Unrealized Losses	195,000		195,000		65,000
Debt Securities - Available-For-Sale, Estimated Fair Value	23,745,000		23,745,000		27,392,000
Debt Securities - Held-To-Maturity [Abstract]
Debt Securities - Held-To-Maturity, Amortized Cost	5,150,000		5,150,000		6,016,000
Debt Securities - Held-To-Maturity, Gross Unrealized Gains	72,000		72,000		149,000
Debt Securities - Held-To-Maturity, Gross Unrealized Losses	255,000		255,000		12,000
Debt Securities - Held-To-Maturity, Estimated Fair Value	4,967,000		4,967,000		6,153,000
Continuous unrealized loss position [Abstract]
Debt/Equity securities, Unrealized (Losses)	195,000		195,000		65,000
Debt/Equity securities, Less than 12 months	189,000		189,000		65,000
Debt/Equity securities, 12 months or longer	6,000		6,000		0
Obligations of States and Political Subdivisions [Member]
Debt securities, at market [Abstract]
Debt securities, at market	23,677,000		23,677,000		3,939,000
Percent of debt securities at market to total investments (in hundredths)			14.09%		3.03%
Debt Securities - Available-For-Sale [Abstract]
Debt Securities - Available-For-Sale, Amortized Cost	23,537,000		23,537,000		3,738,000
Debt Securities - Available-For-Sale, Gross Unrealized Gains	192,000		192,000		202,000
Debt Securities - Available-For-Sale, Gross Unrealized Losses	52,000		52,000		1,000
Debt Securities - Available-For-Sale, Estimated Fair Value	23,677,000		23,677,000		3,939,000
Continuous unrealized loss position [Abstract]
Debt/Equity securities, Unrealized (Losses)	52,000		52,000		1,000
Debt/Equity securities, Less than 12 months	52,000		52,000		1,000
Debt/Equity securities, 12 months or longer	0		0		0
Corporate [Member]
Schedule of Available-for-sale Securities [Line Items]
Debt maturities, held to maturity, at amortized cost	2,036,000		2,036,000		1,203,000
Debt securities, at market [Abstract]
Debt securities, at market	75,201,000		75,201,000		67,313,000
Percent of debt securities at market to total investments (in hundredths)			44.75%		51.74%
Debt securities, at amortized cost [Abstract]
Debt securities, at amortized cost	2,036,000		2,036,000		1,203,000
Percent of debt securities at amortized cost to total investments (in hundredths)			1.21%		0.92%
Debt Securities - Available-For-Sale [Abstract]
Debt Securities - Available-For-Sale, Amortized Cost	74,541,000		74,541,000		63,553,000
Debt Securities - Available-For-Sale, Gross Unrealized Gains	1,277,000		1,277,000		3,794,000
Debt Securities - Available-For-Sale, Gross Unrealized Losses	617,000		617,000		34,000
Debt Securities - Available-For-Sale, Estimated Fair Value	75,201,000		75,201,000		67,313,000
Debt Securities - Held-To-Maturity [Abstract]
Debt Securities - Held-To-Maturity, Amortized Cost	2,036,000		2,036,000		1,203,000
Debt Securities - Held-To-Maturity, Gross Unrealized Gains	22,000		22,000		61,000
Debt Securities - Held-To-Maturity, Gross Unrealized Losses	13,000		13,000		2,000
Debt Securities - Held-To-Maturity, Estimated Fair Value	2,045,000		2,045,000		1,262,000
Continuous unrealized loss position [Abstract]
Debt/Equity securities, Unrealized (Losses)	617,000		617,000		34,000
Debt/Equity securities, Less than 12 months	617,000		617,000		34,000
Debt/Equity securities, 12 months or longer	0		0		0
Debt Securities [Member]
Realized gains (losses) [Abstract]
Total realized gains	202,000	410,000	1,595,000	958,000
Fair Value at Sale of securities with realized gains	6,183,000	9,716,000	36,918,000	27,760,000
Total realized losses	(421,000)	(56,000)	(922,000)	(371,000)
Fair Value at Sale of securities with realized losses	14,462,000	1,637,000	37,493,000	11,050,000
Continuous unrealized loss position [Abstract]
Debt/Equity securities, Unrealized (Losses)	887,000		887,000		101,000
Debt/Equity securities, Less than 12 months	881,000		881,000		101,000
Debt/Equity securities, 12 months or longer	6,000		6,000		0
Investment income [Abstract]
Net realized gains (losses)	(219,000)	354,000	673,000	587,000
Net realized and unrealized investment gains (losses) [Abstract]
Net realized gains (losses)	(219,000)	354,000	673,000	587,000
Net unrealized gains	814,000	5,682,000	814,000	5,682,000
Equity Securities [Member]
Realized gains (losses) [Abstract]
Total realized gains	1,274,000	145,000	2,437,000	805,000
Fair Value at Sale of securities with realized gains	5,619,000	1,349,000	10,063,000	5,437,000
Total realized losses	(275,000)	(354,000)	(630,000)	(1,475,000)
Fair Value at Sale of securities with realized losses	1,471,000	682,000	3,049,000	6,073,000
Investment income [Abstract]
Net realized gains (losses)	999,000	(209,000)	1,807,000	(670,000)
Net realized and unrealized investment gains (losses) [Abstract]
Net realized gains (losses)	999,000	(209,000)	1,807,000	(670,000)
Net unrealized gains	6,038,000	1,928,000	6,038,000	1,928,000
International [Member]
Schedule of Available-for-sale Securities [Line Items]
Debt maturities, held to maturity, at amortized cost	109,000		109,000		140,000
Debt securities, at market [Abstract]
Debt securities, at market	3,390,000		3,390,000		3,111,000
Percent of debt securities at market to total investments (in hundredths)			2.02%		2.39%
Debt securities, at amortized cost [Abstract]
Debt securities, at amortized cost	109,000		109,000		140,000
Percent of debt securities at amortized cost to total investments (in hundredths)			0.06%		0.11%
Debt Securities - Available-For-Sale [Abstract]
Debt Securities - Available-For-Sale, Amortized Cost	3,407,000		3,407,000		3,005,000
Debt Securities - Available-For-Sale, Gross Unrealized Gains	6,000		6,000		107,000
Debt Securities - Available-For-Sale, Gross Unrealized Losses	23,000		23,000		1,000
Debt Securities - Available-For-Sale, Estimated Fair Value	3,390,000		3,390,000		3,111,000
Debt Securities - Held-To-Maturity [Abstract]
Debt Securities - Held-To-Maturity, Amortized Cost	109,000		109,000		140,000
Debt Securities - Held-To-Maturity, Gross Unrealized Gains	0		0		0
Debt Securities - Held-To-Maturity, Gross Unrealized Losses	1,000		1,000		1,000
Debt Securities - Held-To-Maturity, Estimated Fair Value	108,000		108,000		139,000
Continuous unrealized loss position [Abstract]
Debt/Equity securities, Unrealized (Losses)	23,000		23,000		1,000
Debt/Equity securities, Less than 12 months	23,000		23,000		1,000
Debt/Equity securities, 12 months or longer	0		0		0
Common Stock [Member]
Continuous unrealized loss position [Abstract]
Debt/Equity securities, Unrealized (Losses)	396,000		396,000		618,000
Debt/Equity securities, Less than 12 months	250,000		250,000		430,000
Debt/Equity securities, 12 months or longer	146,000		146,000		188,000
United States Treasury Notes [Member] \| Federated National [Member]
Estimated Fair Value [Abstract]
Due after one through five years, Estimated Fair Value	62,744		62,744		63,481
Due after five through ten years, Estimated Fair Value	$ 2,198,829		$ 2,198,829		$ 2,193,300

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 50

-Paragraph 6

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27290-111563

Reference 2: http://www.xbrl.org/2003/role/presentationRef

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-Name FASB Staff Position (FSP)

-Number FAS115-1/124-1

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Emerging Issues Task Force (EITF)

-Number 03-1

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