SECURITIES (Textual) (Details)	6 Months Ended
	Jun. 30, 2019 USD ($) security	Jun. 30, 2018 USD ($) security	Dec. 31, 2018 security
Investments, Debt and Equity Securities [Abstract]
Trading Securities, Sale Proceeds	$ 0	$ 1,300,000
Trading Securities, Realized Gain (Loss)	0	28,000
Trading Securities, OTTI (Recovery) Charges	$ 0	$ 0
Trading Securities, Number of Securities on Nonaccrual Status | security	0	0
Trading Securities, Unrealized Holding Loss	$ 103,000
Trading Securities, Unrealized Holding Gain		$ 3,400,000
Debt Securities, Available-for-sale [Abstract]
Available-for-sale Securities, Number of Securities in Unrealized Loss Position | security	105		271
Available-for-sale Securities, Gross Realized Gains (Losses), Number of Securities Sold | security	36
Available-for-sale Securities, Sale Proceeds	$ 40,800,000	0
Available-for-sale Securities, Gross Realized Gain (Loss)	(26,000)	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	14		90
Held-to-maturity Securities, Number of Securities Sold | security	1	0
Held-to-maturity Securities, OTTI Charges	$ 0	$ 0
Held-to-maturity Securities, Number of Securities in Nonaccrual Status | security	0	0