BORROWINGS (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Operating Leases, Income Statement, Depreciation Expense on Property Subject to or Held-for-lease	$ 1,300,000	$ 1,300,000	$ 939,000
Subordinated Debt	49,601,000	34,728,000
Long-term Debt, Gross	187,888,000	35,000,000.0
Interest Expense, Long-term Debt	8,200,000	4,200,000	3,900,000
Loans Pledged as Collateral	$ 2,500,000,000	$ 1,600,000,000
Federal Home Loan Bank Advances Weighted Average Interest Rate inclusive of Swaps	1.88%	2.55%
Securities Sold under Agreements to Repurchase	$ 0	$ 0
Short-term Debt	50,000,000.0
Customer Repurchase Agreements and other short-term borrowings		162,700,000
Interest expense on short-term borrowings	104,000	248,000	$ 257,000
Long-term Debt	74,906,000	0
Total Long-Term Borrowings	187,355,000	110,901,000
Parent Company [Member]
Debt Instrument [Line Items]
Subordinated Debt		35,000,000
Federal Home Loan Bank Advances [Member]
Debt Instrument [Line Items]
Federal home loan bank unused remaining available borrowing capacity	1,600,000,000	$ 953,500,000
Line of credit maximum borrowing capacity	$ 5,000,000.0
Short-term Debt [Member] | Short-term Debt [Member]
Debt Instrument [Line Items]
Fixed rate	1.15%