INVESTMENTS (Narrative) (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020 USD ($) security	Jun. 30, 2020 USD ($)	Sep. 30, 2020 USD ($) security	Dec. 31, 2019 USD ($) security
Investments, Debt and Equity Securities [Abstract]
Debt securities, available-for-sale, unrealized loss position, number of positions | security	103		103	203
Debt securities, available-for-sale, continuous unrealized loss position, 12 months or longer, number of positions | security	3		3	24
Fair value of investments deposited with governmental authorities required by law	$ 9,500		$ 9,500	$ 11,200
Debt Securities, Held-to-maturity, Sold, Amount		$ 70
Debt Securities, Held-to-maturity, Sold, Realized Gain (Loss)		$ 1
Debt Securities, Held-to-maturity, Transfer, Amount			4,200
Held-to-maturity securities, fair value	4,300		4,300
Debt Securities, Held-to-maturity, Transfer, Unrealized Gain (Loss)	$ 0		$ 58