Debt Instrument, interest rate, stated rate inclusive of interest rate swap which had expired as of end of year.

No definition available.

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- Definition

Federal Home Loan Bank Advances Weighted Average Interest Rate inclusive of interest rate Swaps

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of advances or credit lines available from the Federal Home Loan Bank (FHLB).

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Aggregate amount of interest paid or due on all long-term debt.

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The aggregate interest expense incurred on short-term borrowings including commercial paper and Federal funds purchased and securities sold under agreements to repurchase.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Carrying amount as of the balance sheet date of loans that have been pledged as collateral for borrowings. If the secured party has the right by contract or custom to sell or re-pledge the collateral, then the debtor reclassifies that asset and report that asset in its statement of financial position separately from other assets not so encumbered.

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Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount, after the effects of master netting arrangements, of funds outstanding borrowed in the form of a security repurchase agreement between the entity and another party for the sale and repurchase of identical or substantially the same securities at a date certain for a specified price. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

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Including the current and noncurrent portions, carrying value as of the balance sheet date of subordinated debt (with initial maturities beyond one year or beyond the operating cycle if longer). Subordinated debt places a lender in a lien position behind debt having a higher priority of repayment in liquidation of the entity's assets.

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BORROWINGS (Details Textual) - USD ($)	12 Months Ended
BORROWINGS (Details Textual) - USD ($)	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Subordinated Debt	$ 34,728,000	$ 34,682,000
Interest Expense, Long-term Debt	4,200,000	4,000,000.0	$ 5,800,000
Loans Pledged as Collateral	$ 1,600,000,000	$ 1,500,000,000
Federal Home Loan Bank Advances Weighted Average Interest Rate inclusive of Swaps	2.55%	2.47%
Securities Sold under Agreements to Repurchase	$ 0	$ 162,679,000
Interest expense on short-term borrowings	248,000	257,000	$ 208,000
Total Long-Term Borrowings	110,901,000	107,755,000
East Main Street Trust [Member] \| Junior Subordinated Debt [Member]
Debt Instrument [Line Items]
Total Long-Term Borrowings	3,093,000	0
Parent Company [Member]
Debt Instrument [Line Items]
Subordinated Debt	35,000,000.0	35,000,000
Capital Trust V Preferred Securities Due in 2037 [Member] \| Junior Subordinated Debt [Member]
Debt Instrument [Line Items]
Total Long-Term Borrowings	$ 51,505,000	51,503,000
Fixed rate	4.27%
Debt Instrument, interest rate, stated rate inclusive of interest rate swap - expired	2.84%
Capital Trust V Preferred Securities Due in 2037 [Member] \| Junior Subordinated Debt [Member] \| LIBOR [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	1.48%
Subordinated Debentures Due in November 2019 [Member] [Domain] \| Subordinated Debentures [Member]
Debt Instrument [Line Items]
Fixed rate	4.75%
Subordinated Debentures Due in November 2019 [Member] [Domain] \| Subordinated Debentures [Member] \| LIBOR [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	2.98%
Slades Ferry Trust I Preferred Securities Due in 2034 [Member] \| Junior Subordinated Debt [Member]
Debt Instrument [Line Items]
Total Long-Term Borrowings	$ 10,234,000	10,229,000
Fixed rate	5.59%
Slades Ferry Trust I Preferred Securities Due in 2034 [Member] \| Junior Subordinated Debt [Member] \| LIBOR [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	2.79%
Central Bancorp Capital Trust I Securities Due in 2034 [Member] \| Junior Subordinated Debt [Member]
Debt Instrument [Line Items]
Total Long-Term Borrowings	$ 5,258,000	5,258,000
Fixed rate	5.23%
Central Bancorp Capital Trust I Securities Due in 2034 [Member] \| Junior Subordinated Debt [Member] \| LIBOR [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	2.44%
Central Bancorp Capital Trust II Securities Due in 2037 [Member] \| Junior Subordinated Debt [Member]
Debt Instrument [Line Items]
Total Long-Term Borrowings	$ 6,083,000	6,083,000
Central Bancorp Capital Trust II Securities Due in 2037 [Member] \| Junior Subordinated Debt [Member] \| LIBOR [Member]
Debt Instrument [Line Items]
Fixed rate	4.44%
Basis spread on variable rate	1.65%
Federal Home Loan Bank Advances [Member]
Debt Instrument [Line Items]
Federal home loan bank unused remaining available borrowing capacity	$ 953,500,000	$ 954,800,000
Line of credit maximum borrowing capacity	$ 5,000,000.0