REINSURANCE (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Premiums written
Net premiums written	$ 162,829	$ 157,046	$ 437,258	$ 415,290
Premiums earned
Net premiums earned	138,316	132,362	405,348	380,048
Losses and settlement expenses incurred
Net losses and settlement expenses incurred	106,652	88,235	301,467	249,777
Affiliated Entity [Member]
Premiums written
Assumed	137,591	128,564	362,925	338,105
Ceded	(120,275)	(121,169)	(306,337)	(305,671)
Premiums earned
Assumed	113,039	105,134	328,317	305,500
Ceded	(96,338)	(95,392)	(285,869)	(276,783)
Losses and settlement expenses incurred
Assumed	78,438	64,464	234,477	198,256
Ceded	(55,362)	(50,737)	(178,748)	(172,820)
Non Affiliated Entity [Member]
Premiums written
Direct	117,508	117,721	298,400	296,467
Assumed	39,364	44,417	113,164	119,621
Ceded	(11,359)	(12,487)	(30,894)	(33,232)
Premiums earned
Direct	93,571	91,944	277,932	267,579
Assumed	38,332	41,033	115,712	112,644
Ceded	(10,288)	(10,357)	(30,744)	(28,892)
Losses and settlement expenses incurred
Direct	55,850	50,705	179,277	171,775
Assumed	30,478	25,398	83,547	61,524
Ceded	(2,752)	(1,595)	(17,086)	(8,958)
Property and casualty insurance [Member]
Reinsurance Transactions For Insurance Companies, by Product Segment [Line Items]
Percentage of pool participation	30.00%	30.00%	30.00%	30.00%
Premiums written
Net premiums written	131,005	122,185	345,982	322,225
Premiums earned
Net premiums earned	107,952	100,085	312,716	290,607
Losses and settlement expenses incurred
Net losses and settlement expenses incurred	78,556	65,638	227,069	195,686
Property and casualty insurance [Member] | Affiliated Entity [Member]
Premiums written
Assumed	137,591	128,564	362,925	338,105
Ceded	(117,508)	(117,721)	(298,400)	(296,467)
Premiums earned
Assumed	113,039	105,134	328,317	305,500
Ceded	(93,571)	(91,944)	(277,932)	(267,579)
Losses and settlement expenses incurred
Assumed	78,147	64,168	233,649	197,525
Ceded	(55,850)	(50,705)	(179,277)	(171,775)
Property and casualty insurance [Member] | Non Affiliated Entity [Member]
Premiums written
Direct	117,508	117,721	298,400	296,467
Assumed	1,038	945	2,818	2,440
Ceded	(7,624)	(7,324)	(19,761)	(18,320)
Premiums earned
Direct	93,571	91,944	277,932	267,579
Assumed	963	814	2,698	2,238
Ceded	(6,050)	(5,863)	(18,299)	(17,131)
Losses and settlement expenses incurred
Direct	55,850	50,705	179,277	171,775
Assumed	540	1,034	1,626	1,461
Ceded	(131)	436	(8,206)	(3,300)
Reinsurance [Member]
Premiums written
Net premiums written	31,824	34,861	91,276	93,065
Premiums earned
Net premiums earned	30,364	32,277	92,632	89,441
Losses and settlement expenses incurred
Net losses and settlement expenses incurred	28,096	22,597	74,398	54,091
Reinsurance [Member] | Affiliated Entity [Member]
Premiums written
Assumed	0	0	0	0
Ceded	(2,767)	(3,448)	(7,937)	(9,204)
Premiums earned
Assumed	0	0	0	0
Ceded	(2,767)	(3,448)	(7,937)	(9,204)
Losses and settlement expenses incurred
Assumed	291	296	828	731
Ceded	488	(32)	529	(1,045)
Reinsurance [Member] | Non Affiliated Entity [Member]
Premiums written
Direct	0	0	0	0
Assumed	38,326	43,472	110,346	117,181
Ceded	(3,735)	(5,163)	(11,133)	(14,912)
Premiums earned
Direct	0	0	0	0
Assumed	37,369	40,219	113,014	110,406
Ceded	(4,238)	(4,494)	(12,445)	(11,761)
Losses and settlement expenses incurred
Direct	0	0	0	0
Assumed	29,938	24,364	81,921	60,063
Ceded	$ (2,621)	$ (2,031)	$ (8,880)	$ (5,658)