INVESTMENTS (Narrative) (Details) - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2019	Dec. 31, 2018
Gain (Loss) on Securities [Line Items]
Held-to-maturity securities, unrealized losses	$ 0	$ 22,000
Other-than-temporary impairments, available-for-sale securities	0	16,000
Single largest loss position	40,000	145,000
Second largest loss position	27,000	99,000
Third largest loss position	$ 25,000	$ 94,000
Maximum
Gain (Loss) on Securities [Line Items]
Percent of investment portfolio below investment grade	5.46%