INVESTMENTS (Major Categories of Investment Gains and Losses) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Gain (Loss) on Securities [Line Items]
Net investment gains (losses)	$ (117)	$ 456	$ 2,120	$ (8)
Gains on trading securities	1	0	9	0
Realized gains (losses) on fixed maturities
Gain (Loss) on Securities [Line Items]
Net investment gains (losses)	(24)	27	(9)	156
Change in fair value of equity securities
Gain (Loss) on Securities [Line Items]
Net investment gains (losses)	(80)	426	72	57
Change in surrender value of company owned life insurance
Gain (Loss) on Securities [Line Items]
Net investment gains (losses)	(14)	3	256	(133)
Realized gain on company owned life insurance
Gain (Loss) on Securities [Line Items]
Net investment gains (losses)	0	0	1,792	0
Other, principally real estate
Gain (Loss) on Securities [Line Items]
Net investment gains (losses)	$ 0	$ 0	$ 0	$ (88)