Business Acquisition, Cost of Acquired Entity, Percentage Cash Paid

No definition available.

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- Definition

Business Acquisition, Cost of Acquired Entity, Percentage Stock Consideration

+ References

No definition available.

+ Details

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- Definition

Business Acquisition, Equity Interest Issued or Issuable, Number of Shares of Company Stock Issued for Each Share of Acquiree Stock

+ References

No definition available.

+ Details

Name:	indb_BusinessAcquisitionEquityInterestIssuedOrIssuableNumberOfSharesOfCompanyStockIssuedForEachShareOfAcquireeStock
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- Definition

Business Acquisition, Equity Interest Issued or Issuable, Per Share Value of Shares of Company Stock Issued for Each Share of Acquiree Stock

+ References

No definition available.

+ Details

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- Definition

Business Acquisition, Equity Interest Issued or Issuable Shareholders Option To Receive, Cash Per Share

+ References

No definition available.

+ Details

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- Definition

The total cost of the acquired entity including the cash paid to shareholders of acquired entities, fair value of debt and equity securities issued to shareholders of acquired entities, the fair value of the liabilities assumed, and direct costs of the acquisition.

+ References

No definition available.

+ Details

Name:	indb_BusinessCombinationCostofAcquiredEntityPurchasePrice
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- Definition

Business Combination, Increase in Acquirer Outstanding Shares

+ References

No definition available.

+ Details

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- Definition

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Loans Net

+ References

No definition available.

+ Details

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Balance Type:	debit
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- Details

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- Definition

This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 25

-Paragraph 23

-URI http://asc.fasb.org/extlink&oid=34752592&loc=d3e1043-128460

+ Details

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Period Type:	duration

- Definition

Amount of equity interests of the acquirer, including instruments or interests issued or issuable in consideration for the business combination.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 30

-Section 30

-Paragraph 7

-URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 30

-Section 30

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6613-128477

+ Details

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Balance Type:	credit
Period Type:	duration

- Definition

The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 13

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585

+ Details

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Balance Type:	credit
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- Definition

Price of a single share of a number of saleable stocks of a company.

+ References

No definition available.

+ Details

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Data Type:	num:perShareItemType
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Period Type:	instant

- Details

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- Details

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ACQUISITIONS (Details Textual) (USD $)	3 Months Ended		0 Months Ended
ACQUISITIONS (Details Textual) (USD $)	Mar. 31, 2015	Mar. 31, 2014	Feb. 20, 2015
Business Acquisition [Line Items]
Acquisition Related Costs	$ 10,230,000	$ 77,000
Peoples Federal Bancshares, Inc [Member]
Business Acquisition [Line Items]
Equity Interest Issued or Issuable Shareholders Option To Receive, Cash Per Share			$ 21.00
Number of shares of company stock issued for each share of Central common stock (in shares)			0.5523
Value of shares of company stock issued for each share of acquiree stock (in dollars per share)			$ 23.26
Company's closing price per share (in dollars per share)			$ 42.11
Business transaction value			141,800,000
Cost of acquired entity, percentage cash			40.00%
Business Acquisition, Cost of Acquired Entity, Percentage Stock Consideration			60.00%
Cost of acquired entity, cash paid			55,400,000
Consideration Transferred, Equity Interests Issued and Issuable			86,400,000
Increase in acquirer outstanding shares			2,052,137
Acquisition Related Costs	10,200,000
Loans acquired			463,927,000
Combination of INDB and Peoples Federal Bancshares, Inc [Member]
Business Acquisition [Line Items]
Acquisition Related Costs	$ 16,600,000