INCOME TAXES - (Significant Components of Net Deferred Tax Liability) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Components of Deferred Tax Assets [Abstract]
Unearned premiums	$ 9,543	$ 13,975
Unpaid loss and loss adjustment expenses	1,050	1,869
Accrued expenses	689	692
Net operating loss carryforwards	1,567	7
Deferred revenue	0	2,637
Share-based compensation	255	0
Other	123	152
Total	13,227	19,332
Components of Deferred Tax Liabilities [Abstract]
Deferred acquisition costs	(11,742)	(17,493)
Deferred revenue related to reinsurance	(600)	(1,277)
Other	(30)	(97)
Depreciation and amortization	(548)	(718)
Total	(12,920)	(19,585)
Deferred Tax Assets, Net	$ 307
Deferred income taxes, net		$ (253)