SECURITIES (Textual) (Details)	9 Months Ended
	Sep. 30, 2019 USD ($) security	Sep. 30, 2018 USD ($) security	Dec. 31, 2018 security
Investments, Debt and Equity Securities [Abstract]
Trading Securities, Sale Proceeds	$ 0	$ 0
Trading Securities, Realized Gain (Loss)	0	0
Trading Securities, OTTI (Recovery) Charges	$ 0	$ 0
Trading Securities, Number of Securities on Nonaccrual Status | security	0	0
Trading Securities, Unrealized Holding Loss	$ 172,000
Trading Securities, Unrealized Holding Gain		$ 3,500,000
Debt Securities, Available-for-sale [Abstract]
Available-for-sale Securities, Number of Securities in Unrealized Loss Position | security	90		271
Available-for-sale Securities, Gross Realized Gains (Losses), Number of Securities Sold | security	45
Available-for-sale Securities, Sale Proceeds	$ 43,300,000	0
Available-for-sale Securities, Gross Realized Gain (Loss)	(28,000)	51,000,000
Available-for-sale Securities, OTTI Charges	$ 0	$ 0
Available-for-sale Securities, Number of Securities in Nonaccrual Status | security	0	0
Debt Securities, Held-to-maturity, Sold, Realized Gain (Loss), Excluding Other-than-temporary Impairment	$ 1,000	$ 2,000,000
Held-to-maturity Securities [Abstract]
Held-to-maturity Securities, Number of Securities in Unrealized Loss Position | security	16		90
Held-to-maturity Securities, Number of Securities Sold | security	0	0
Held-to-maturity Securities, OTTI Charges	$ 0	$ 0
Held-to-maturity Securities, Number of Securities in Nonaccrual Status | security	0	0