REINSURANCE (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Premiums written
Net premiums written	$ 139,024	$ 136,114	$ 274,429	$ 258,244
Premiums earned
Net premiums earned	133,952	127,189	267,032	247,686
Losses and settlement expenses incurred
Net losses and settlement expenses incurred	105,846	88,968	194,815	161,542
Affiliated Entity [Member]
Premiums written
Assumed	118,286	110,140	225,334	209,541
Ceded	(93,161)	(92,909)	(186,062)	(184,502)
Premiums earned
Assumed	109,397	102,770	215,278	200,366
Ceded	(95,596)	(93,544)	(189,531)	(181,391)
Losses and settlement expenses incurred
Assumed	87,576	76,982	156,039	133,792
Ceded	(75,395)	(71,302)	(123,386)	(122,083)
Non Affiliated Entity [Member]
Premiums written
Direct	90,851	89,858	180,892	178,746
Assumed	33,499	39,878	73,800	75,204
Ceded	(10,451)	(10,853)	(19,535)	(20,745)
Premiums earned
Direct	93,286	90,493	184,361	175,635
Assumed	37,586	37,714	77,380	71,611
Ceded	(10,721)	(10,244)	(20,456)	(18,535)
Losses and settlement expenses incurred
Direct	75,417	71,466	123,427	121,070
Assumed	28,067	16,726	53,069	36,126
Ceded	(9,819)	(4,904)	(14,334)	(7,363)
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	112,464	105,259	214,977	200,040
Premiums earned
Net premiums earned	103,517	97,817	204,764	190,522
Losses and settlement expenses incurred
Net losses and settlement expenses incurred	80,787	74,080	148,513	130,048
Property and casualty insurance [Member] | Affiliated Entity [Member]
Premiums written
Assumed	118,286	110,140	225,334	209,541
Ceded	(90,851)	(89,858)	(180,892)	(178,746)
Premiums earned
Assumed	109,397	102,770	215,278	200,366
Ceded	(93,286)	(90,493)	(184,361)	(175,635)
Losses and settlement expenses incurred
Assumed	87,330	76,771	155,502	133,357
Ceded	(75,417)	(71,466)	(123,427)	(121,070)
Property and casualty insurance [Member] | Non Affiliated Entity [Member]
Premiums written
Direct	90,851	89,858	180,892	178,746
Assumed	993	882	1,780	1,495
Ceded	(6,815)	(5,763)	(12,137)	(10,996)
Premiums earned
Direct	93,286	90,493	184,361	175,635
Assumed	891	763	1,735	1,424
Ceded	(6,771)	(5,716)	(12,249)	(11,268)
Losses and settlement expenses incurred
Direct	75,417	71,466	123,427	121,070
Assumed	484	34	1,086	427
Ceded	(7,027)	(2,725)	(8,075)	(3,736)
Reinsurance [Member]
Premiums written
Net premiums written	26,560	30,855	59,452	58,204
Premiums earned
Net premiums earned	30,435	29,372	62,268	57,164
Losses and settlement expenses incurred
Net losses and settlement expenses incurred	25,059	14,888	46,302	31,494
Reinsurance [Member] | Affiliated Entity [Member]
Premiums written
Assumed	0	0	0	0
Ceded	(2,310)	(3,051)	(5,170)	(5,756)
Premiums earned
Assumed	0	0	0	0
Ceded	(2,310)	(3,051)	(5,170)	(5,756)
Losses and settlement expenses incurred
Assumed	246	211	537	435
Ceded	22	164	41	(1,013)
Reinsurance [Member] | Non Affiliated Entity [Member]
Premiums written
Direct	0	0	0	0
Assumed	32,506	38,996	72,020	73,709
Ceded	(3,636)	(5,090)	(7,398)	(9,749)
Premiums earned
Direct	0	0	0	0
Assumed	36,695	36,951	75,645	70,187
Ceded	(3,950)	(4,528)	(8,207)	(7,267)
Losses and settlement expenses incurred
Direct	0	0	0	0
Assumed	27,583	16,692	51,983	35,699
Ceded	$ (2,792)	$ (2,179)	$ (6,259)	$ (3,627)