REINSURANCE (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Premiums written
Net premiums written	$ 135,405	$ 122,130
Premiums earned
Net premiums earned	133,080	120,497
Losses and settlement expenses incurred
Net losses and settlement expenses incurred	88,969	72,574
Affiliated Entity [Member]
Premiums written
Assumed	107,048	99,401
Ceded	(92,901)	(91,593)
Premiums earned
Assumed	105,881	97,596
Ceded	(93,935)	(87,847)
Losses and settlement expenses incurred
Assumed	68,463	56,810
Ceded	(47,991)	(50,781)
Non Affiliated Entity [Member]
Premiums written
Direct	90,040	88,888
Assumed	40,302	35,326
Ceded	(9,084)	(9,892)
Premiums earned
Direct	91,075	85,142
Assumed	39,794	33,897
Ceded	(9,735)	(8,291)
Losses and settlement expenses incurred
Direct	48,010	49,604
Assumed	25,002	19,400
Ceded	(4,515)	(2,459)
Property and casualty insurance [Member]
Reinsurance Transactions For Insurance Companies, by Product Segment [Line Items]
Percentage of pool participation	30.00%	30.00%
Premiums written
Net premiums written	102,513	94,781
Premiums earned
Net premiums earned	101,247	92,705
Losses and settlement expenses incurred
Net losses and settlement expenses incurred	67,726	55,968
Property and casualty insurance [Member] | Affiliated Entity [Member]
Premiums written
Assumed	107,048	99,401
Ceded	(90,041)	(88,888)
Premiums earned
Assumed	105,881	97,596
Ceded	(91,075)	(85,142)
Losses and settlement expenses incurred
Assumed	68,172	56,586
Ceded	(48,010)	(49,604)
Property and casualty insurance [Member] | Non Affiliated Entity [Member]
Premiums written
Direct	90,040	88,888
Assumed	788	613
Ceded	(5,322)	(5,233)
Premiums earned
Direct	91,075	85,142
Assumed	844	661
Ceded	(5,478)	(5,552)
Losses and settlement expenses incurred
Direct	48,010	49,604
Assumed	602	393
Ceded	(1,048)	(1,011)
Reinsurance [Member]
Premiums written
Net premiums written	32,892	27,349
Premiums earned
Net premiums earned	31,833	27,792
Losses and settlement expenses incurred
Net losses and settlement expenses incurred	21,243	16,606
Reinsurance [Member] | Affiliated Entity [Member]
Premiums written
Assumed	0	0
Ceded	(2,860)	(2,705)
Premiums earned
Assumed	0	0
Ceded	(2,860)	(2,705)
Losses and settlement expenses incurred
Assumed	291	224
Ceded	19	(1,177)
Reinsurance [Member] | Non Affiliated Entity [Member]
Premiums written
Direct	0	0
Assumed	39,514	34,713
Ceded	(3,762)	(4,659)
Premiums earned
Direct	0	0
Assumed	38,950	33,236
Ceded	(4,257)	(2,739)
Losses and settlement expenses incurred
Direct	0	0
Assumed	24,400	19,007
Ceded	$ (3,467)	$ (1,448)