INCOME TAXES - (Significant Components of Net Deferred Tax Liability) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Deferred income tax assets:
Unearned premiums	$ 5,611	$ 10,232
Unpaid losses and loss adjustment expenses	581	1,596
Accrued expenses	236	216
Net operating loss carryforwards	5,350	2,095
Share-based compensation	232	161
Depreciation and amortization	412	0
Lease liability	1,783	1,655
Other	69	23
Gross deferred income tax assets	14,274	15,978
Valuation allowance	(2,968)	0
Total deferred income tax assets	11,306	15,978
Deferred income tax liabilities:
Deferred acquisition costs and other	(6,387)	(12,703)
Depreciation and amortization	0	(1,679)
Unrealized gains on investment securities	(2,865)	(3,270)
Lease asset	(1,783)	(1,655)
Other	(213)	(257)
Total deferred income tax liabilities	(11,248)	(19,564)
Deferred tax assets, net	$ 58
Deferred tax liability, net		$ (3,586)