POLICY AND CLAIM RESERVES (Property and Casualty Reserve) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018	Dec. 31, 2017
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]
Less reinsurance recoverable on unpaid losses	$ 1,396		$ 1,772
Net losses:
Estimated claims and claim adjustment expenses for claims arising in prior years	(604)	$ (1,097)
Consolidated Property and Casualty Insurance Entity
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]
Balance, beginning of year	7,963	6,927	8,208	$ 7,075
Less reinsurance recoverable on unpaid losses	1,264	185	1,384	327
Net balances at beginning of year	6,699	6,742	$ 6,824	$ 6,748
Net losses:
Provision for claims and claim adjustment expenses for claims arising in current year	8,585	9,185
Estimated claims and claim adjustment expenses for claims arising in prior years	(604)	(1,097)
Total increases	7,981	8,088
Claims and claim adjustment expense payments for claims arising in:
Current year	5,596	5,527
Prior years	2,510	2,567
Total payments	$ 8,106	$ 8,094