VARIABLE INTEREST ENTITY (Carrying Amount of VIE Consolidated Assets and Liabilities) (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016	Jun. 30, 2016	Dec. 31, 2015
Investments
Debt securities, available-for-sale, at fair value	$ 383,910	$ 374,756
Equity securities, available-for-sale, at fair value	45,445	29,375
Total investments	434,776	409,682
Cash and cash equivalents	99,529	74,593	$ 80,073	$ 53,038
Reinsurance recoverable	41,090	48,530
Prepaid reinsurance premiums	120,589	156,932
Premiums receivable, net	59,422	54,854
Deferred acquisition costs	41,299	37,477
Other asset	11,250	11,509
TOTAL ASSETS	825,721	811,642
LIABILITIES
Loss and loss adjustment expense reserves	156,973	158,476	$ 120,723	$ 97,340
Unearned premiums	310,224	294,022
Reinsurance Payable	69,782	79,154
Debt	4,919	4,909
Other liabilities	36,589	35,792
Total liabilities	585,884	573,786
Monarch Delaware - Variable Interest Entity [Member]
Investments
Debt securities, available-for-sale, at fair value	29,245	27,100
Equity securities, available-for-sale, at fair value	1,195	1,604
Total investments	30,440	28,704
Cash and cash equivalents	12,438	15,668
Reinsurance recoverable	350
Prepaid reinsurance premiums	1,855	1,070
Premiums receivable, net	711	1,584
Deferred acquisition costs	1,096	1,539
Other asset	765	635
TOTAL ASSETS	47,655	49,200
LIABILITIES
Loss and loss adjustment expense reserves	2,722	1,659
Unearned premiums	6,108	8,406
Reinsurance Payable	2,434	863
Debt	4,919	4,909
Other liabilities	833	1,026
Total liabilities	$ 17,016	$ 16,863