XML 44 R127.htm IDEA: XBRL DOCUMENT v2.4.1.9
FAIR VALUE MEASUREMENTS (Details 2) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Fair Value, Assets, Quantitative Information [Line Items]    
Available-for-sale Securities 348,554us-gaap_AvailableForSaleSecurities 356,862us-gaap_AvailableForSaleSecurities
Weighted Average [Member] | Discounted cash flow methodology [Member] | Significant Unobservable Inputs (Level 3) [Member]    
Fair Value, Assets, Quantitative Information [Line Items]    
Cumulative Prepayment 7.00%us-gaap_FairValueInputsPrepaymentRate
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_RangeAxis
= us-gaap_WeightedAverageMember
/ us-gaap_ValuationTechniqueAxis
= us-gaap_IncomeApproachValuationTechniqueMember		 7.20%us-gaap_FairValueInputsPrepaymentRate
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_RangeAxis
= us-gaap_WeightedAverageMember
/ us-gaap_ValuationTechniqueAxis
= us-gaap_IncomeApproachValuationTechniqueMember
Cumulative Default 13.90%indb_FairValueInputsCumulativeDefault
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_RangeAxis
= us-gaap_WeightedAverageMember
/ us-gaap_ValuationTechniqueAxis
= us-gaap_IncomeApproachValuationTechniqueMember		 18.10%indb_FairValueInputsCumulativeDefault
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_RangeAxis
= us-gaap_WeightedAverageMember
/ us-gaap_ValuationTechniqueAxis
= us-gaap_IncomeApproachValuationTechniqueMember
Loss Given Default 96.10%indb_FairValueInputsLossGivenDefault
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_RangeAxis
= us-gaap_WeightedAverageMember
/ us-gaap_ValuationTechniqueAxis
= us-gaap_IncomeApproachValuationTechniqueMember		 95.70%indb_FairValueInputsLossGivenDefault
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_RangeAxis
= us-gaap_WeightedAverageMember
/ us-gaap_ValuationTechniqueAxis
= us-gaap_IncomeApproachValuationTechniqueMember
Cure Given Default 46.70%indb_FairValueInputsCureGivenDefault
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_RangeAxis
= us-gaap_WeightedAverageMember
/ us-gaap_ValuationTechniqueAxis
= us-gaap_IncomeApproachValuationTechniqueMember		 39.90%indb_FairValueInputsCureGivenDefault
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_RangeAxis
= us-gaap_WeightedAverageMember
/ us-gaap_ValuationTechniqueAxis
= us-gaap_IncomeApproachValuationTechniqueMember
Pooled Trust Preferred Securities [Member] | Significant Unobservable Inputs (Level 3) [Member]    
Fair Value, Assets, Quantitative Information [Line Items]    
Available-for-sale Securities 6,321us-gaap_AvailableForSaleSecurities
/ us-gaap_EligibleItemOrGroupForFairValueOptionAxis
= indb_PooledTrustPreferredSecuritiesMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member		 3,841us-gaap_AvailableForSaleSecurities
/ us-gaap_EligibleItemOrGroupForFairValueOptionAxis
= indb_PooledTrustPreferredSecuritiesMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
Pooled Trust Preferred Securities [Member] | Minimum [Member] | Discounted cash flow methodology [Member] | Significant Unobservable Inputs (Level 3) [Member]    
Fair Value, Assets, Quantitative Information [Line Items]    
Cumulative Prepayment 0.00%us-gaap_FairValueInputsPrepaymentRate
/ us-gaap_EligibleItemOrGroupForFairValueOptionAxis
= indb_PooledTrustPreferredSecuritiesMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
/ us-gaap_ValuationTechniqueAxis
= us-gaap_IncomeApproachValuationTechniqueMember		 0.00%us-gaap_FairValueInputsPrepaymentRate
/ us-gaap_EligibleItemOrGroupForFairValueOptionAxis
= indb_PooledTrustPreferredSecuritiesMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
/ us-gaap_ValuationTechniqueAxis
= us-gaap_IncomeApproachValuationTechniqueMember
Cumulative Default 3.00%indb_FairValueInputsCumulativeDefault
/ us-gaap_EligibleItemOrGroupForFairValueOptionAxis
= indb_PooledTrustPreferredSecuritiesMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
/ us-gaap_ValuationTechniqueAxis
= us-gaap_IncomeApproachValuationTechniqueMember		 3.00%indb_FairValueInputsCumulativeDefault
/ us-gaap_EligibleItemOrGroupForFairValueOptionAxis
= indb_PooledTrustPreferredSecuritiesMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
/ us-gaap_ValuationTechniqueAxis
= us-gaap_IncomeApproachValuationTechniqueMember
Loss Given Default 85.00%indb_FairValueInputsLossGivenDefault
/ us-gaap_EligibleItemOrGroupForFairValueOptionAxis
= indb_PooledTrustPreferredSecuritiesMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
/ us-gaap_ValuationTechniqueAxis
= us-gaap_IncomeApproachValuationTechniqueMember		 85.00%indb_FairValueInputsLossGivenDefault
/ us-gaap_EligibleItemOrGroupForFairValueOptionAxis
= indb_PooledTrustPreferredSecuritiesMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
/ us-gaap_ValuationTechniqueAxis
= us-gaap_IncomeApproachValuationTechniqueMember
Cure Given Default 0.00%indb_FairValueInputsCureGivenDefault
/ us-gaap_EligibleItemOrGroupForFairValueOptionAxis
= indb_PooledTrustPreferredSecuritiesMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
/ us-gaap_ValuationTechniqueAxis
= us-gaap_IncomeApproachValuationTechniqueMember		 0.00%indb_FairValueInputsCureGivenDefault
/ us-gaap_EligibleItemOrGroupForFairValueOptionAxis
= indb_PooledTrustPreferredSecuritiesMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
/ us-gaap_ValuationTechniqueAxis
= us-gaap_IncomeApproachValuationTechniqueMember
Pooled Trust Preferred Securities [Member] | Maximum [Member] | Discounted cash flow methodology [Member] | Significant Unobservable Inputs (Level 3) [Member]    
Fair Value, Assets, Quantitative Information [Line Items]    
Cumulative Prepayment 75.00%us-gaap_FairValueInputsPrepaymentRate
/ us-gaap_EligibleItemOrGroupForFairValueOptionAxis
= indb_PooledTrustPreferredSecuritiesMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_ValuationTechniqueAxis
= us-gaap_IncomeApproachValuationTechniqueMember		 76.00%us-gaap_FairValueInputsPrepaymentRate
/ us-gaap_EligibleItemOrGroupForFairValueOptionAxis
= indb_PooledTrustPreferredSecuritiesMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_ValuationTechniqueAxis
= us-gaap_IncomeApproachValuationTechniqueMember
Cumulative Default 100.00%indb_FairValueInputsCumulativeDefault
/ us-gaap_EligibleItemOrGroupForFairValueOptionAxis
= indb_PooledTrustPreferredSecuritiesMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_ValuationTechniqueAxis
= us-gaap_IncomeApproachValuationTechniqueMember		 100.00%indb_FairValueInputsCumulativeDefault
/ us-gaap_EligibleItemOrGroupForFairValueOptionAxis
= indb_PooledTrustPreferredSecuritiesMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_ValuationTechniqueAxis
= us-gaap_IncomeApproachValuationTechniqueMember
Loss Given Default 100.00%indb_FairValueInputsLossGivenDefault
/ us-gaap_EligibleItemOrGroupForFairValueOptionAxis
= indb_PooledTrustPreferredSecuritiesMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_ValuationTechniqueAxis
= us-gaap_IncomeApproachValuationTechniqueMember		 100.00%indb_FairValueInputsLossGivenDefault
/ us-gaap_EligibleItemOrGroupForFairValueOptionAxis
= indb_PooledTrustPreferredSecuritiesMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_ValuationTechniqueAxis
= us-gaap_IncomeApproachValuationTechniqueMember
Cure Given Default 75.00%indb_FairValueInputsCureGivenDefault
/ us-gaap_EligibleItemOrGroupForFairValueOptionAxis
= indb_PooledTrustPreferredSecuritiesMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_ValuationTechniqueAxis
= us-gaap_IncomeApproachValuationTechniqueMember		 75.00%indb_FairValueInputsCureGivenDefault
/ us-gaap_EligibleItemOrGroupForFairValueOptionAxis
= indb_PooledTrustPreferredSecuritiesMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_ValuationTechniqueAxis
= us-gaap_IncomeApproachValuationTechniqueMember
Impaired Loans [Member] | Significant Unobservable Inputs (Level 3) [Member]    
Fair Value, Assets, Quantitative Information [Line Items]    
Assets, Fair Value Disclosure, Recurring 8,196us-gaap_AssetsFairValueDisclosureRecurring
/ us-gaap_EligibleItemOrGroupForFairValueOptionAxis
= indb_ImpairedLoansMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member		 10,328us-gaap_AssetsFairValueDisclosureRecurring
/ us-gaap_EligibleItemOrGroupForFairValueOptionAxis
= indb_ImpairedLoansMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
Other real estate owned and other foreclosed assets | Significant Unobservable Inputs (Level 3) [Member]    
Fair Value, Assets, Quantitative Information [Line Items]    
Assets, Fair Value Disclosure, Recurring 7,743us-gaap_AssetsFairValueDisclosureRecurring
/ us-gaap_EligibleItemOrGroupForFairValueOptionAxis
= indb_OtherRealEstateOwnedMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member		 7,633us-gaap_AssetsFairValueDisclosureRecurring
/ us-gaap_EligibleItemOrGroupForFairValueOptionAxis
= indb_OtherRealEstateOwnedMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member