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Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

Weighted average interest rate of debt outstanding.

+ References

No definition available.

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- Definition

Federal Home Loan Bank borrowings due within one year of the latest balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

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- Definition

The amount of cash paid for interest during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

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-SubTopic 10

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-Paragraph 25

-Subparagraph (e)

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- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

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-Subparagraph (SX 210.7-03.16)

-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

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- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

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-Number 210

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- Definition

Cash and investments whose use in whole or in part is restricted for the long-term, generally by contractual agreements or regulatory requirements. For use in an unclassified balance sheet.

+ References

No definition available.

+ Details

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- Definition

Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

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-Number 210

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-Subparagraph 2, 3

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- Definition

Repurchase Agreements, Weighted Average Interest Rate

+ References

No definition available.

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Short-Term Borrowings - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Debt Instrument [Line Items]
Short-term borrowings	$ 48,197,000	$ 69,934,000
Collateralized Debt Obligations
Debt Instrument [Line Items]
Repurchase agreement weighted average interest rate	3.49%	3.41%
Federal Home Loan Bank Certificates and Obligations (FHLB)
Debt Instrument [Line Items]
Short-term borrowings	20,000,000	41,700,000
Weighted average rate	0.30%	0.24%
Federal Home Loan Bank Certificates and Obligations (FHLB) \| Maximum
Debt Instrument [Line Items]
Original maturity period of debt	1 year	1 year
Federal Home Loan Bank of Boston Ideal Way Line of Credit
Debt Instrument [Line Items]
Line of credit	9,500,000	9,500,000
Outstanding advance under line of credit	0	8,700,000
Bankers Bank Northeast
Debt Instrument [Line Items]
Outstanding advance under line of credit	0	4,000,000
Total amount available to borrow from BBN	4,000,000
Required cash reserve	300,000
Short-term Debt Borrowing
Debt Instrument [Line Items]
Cash paid for interest	$ 111,000	$ 114,000	$ 154,000