BORROWINGS (Details) - USD ($) $ in Thousands		Jun. 30, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Repurchase Agreements		$ 241,647	$ 245,868
Total short-term borrowings		241,647	270,868
Long-term Federal Home Loan Bank Advances		10,000	10,000
Total long-term borrowings		10,000	11,580
Short-term Debt [Member]
Debt Instrument [Line Items]
Repurchase Agreements		241,647	245,868
FHLBB advances less than 90 days		0	25,000
Long-term Debt [Member]
Debt Instrument [Line Items]
Capital lease obligation	[1]	$ 0	$ 1,580

[1] (1)Upon adoption of ASU 2016-02, effective January 1, 2019, lease liabilities are presented within other liabilities on the consolidated statements of condition. Refer to Notes 2 and 5 for further information.