QUARTERLY RESULTS OF OPERATIONS (Summary of Unaudited Quarterly Results of Operations) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Unaudited Quarterly Results of Operations [Abstract]
Net premiums earned	$ 75,425	$ 69,405	$ 60,045	$ 54,997	$ 53,721	$ 62,286	$ 49,227	$ 44,786	$ 259,872	$ 210,020	$ 170,905
Total Revenue	88,570	83,790	75,064	68,960	63,568	72,599	58,790	54,936	316,384	249,893	200,692
Losses and loss adjustment expenses	67,158	43,613	47,025	29,545	28,843	28,412	23,149	23,949	60,770	19,010	17,315
Total costs and expenses	104,590	82,250	73,249	53,562	49,123	54,974	40,151	40,452	313,651	184,700	143,385
Net (loss) income attributable to Federated National Holding Company shareholders	$ (12,116)	$ 1,394	$ 991	$ 9,535	$ 9,274	$ 10,593	$ 11,734	$ 9,284	$ (196)	$ 40,885	$ 37,199
Net income per share - basic (in dollars per share)	$ (0.89)	$ 0.10	$ 0.07	$ 0.69	$ 0.67	$ 0.77	$ 0.86	$ 0.68	$ (0.01)	$ 2.98	$ 3.08
Parent Company [Member]
Unaudited Quarterly Results of Operations [Abstract]
Total Revenue									$ 12,595	$ 75,003	$ 64,457
Total costs and expenses									9,862	9,810	7,150
Net (loss) income attributable to Federated National Holding Company shareholders									$ (196)	$ 40,885	$ 37,199