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LOANS - Composition of loans receivable by delinquency status (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Business Activities Loans - Current    
Residential 1-4 family $ 241,567us-gaap_LoansAndLeasesReceivableConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusCurrentMember
$ 222,356us-gaap_LoansAndLeasesReceivableConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusCurrentMember
Residential 5+ multifamily 5,467us-gaap_LoansAndLeasesReceivableConsumerOther
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusCurrentMember
4,749us-gaap_LoansAndLeasesReceivableConsumerOther
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusCurrentMember
Construction of residential 1-4 family 2,004us-gaap_LoansAndLeasesReceivableConsumerConstruction
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusCurrentMember
1,876us-gaap_LoansAndLeasesReceivableConsumerConstruction
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusCurrentMember
Home equity credit 33,488us-gaap_LoansAndLeasesReceivableConsumerHomeEquity
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusCurrentMember
33,391us-gaap_LoansAndLeasesReceivableConsumerHomeEquity
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusCurrentMember
Residential real estate 282,526us-gaap_LoansAndLeasesReceivableConsumerRealEstate
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusCurrentMember
262,372us-gaap_LoansAndLeasesReceivableConsumerRealEstate
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusCurrentMember
Commercial 94,598us-gaap_LoansAndLeasesReceivableCommercial
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusCurrentMember
89,434us-gaap_LoansAndLeasesReceivableCommercial
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusCurrentMember
Construction of commercial 18,602us-gaap_LoansReceivableCommercialConstruction
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusCurrentMember
9,784us-gaap_LoansReceivableCommercialConstruction
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusCurrentMember
Commercial real estate 113,200us-gaap_LoansReceivableCommercialRealEstate
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusCurrentMember
99,218us-gaap_LoansReceivableCommercialRealEstate
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusCurrentMember
Farm land 2,119us-gaap_LoansReceivableCommercialAgricultural
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusCurrentMember
2,995us-gaap_LoansReceivableCommercialAgricultural
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusCurrentMember
Vacant land 6,422us-gaap_LoansReceivableCommercialDevelopment
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusCurrentMember
6,058us-gaap_LoansReceivableCommercialDevelopment
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusCurrentMember
Real estate secured 404,267us-gaap_LoansAndLeasesReceivableCollateralForSecuredBorrowings
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusCurrentMember
370,643us-gaap_LoansAndLeasesReceivableCollateralForSecuredBorrowings
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusCurrentMember
Commercial and industrial 48,478us-gaap_LoansReceivableCommercialAndIndustrial
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusCurrentMember
45,897us-gaap_LoansReceivableCommercialAndIndustrial
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusCurrentMember
Municipal 6,083us-gaap_LoansAndLeasesReceivableCommercialGovernments
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusCurrentMember
4,252us-gaap_LoansAndLeasesReceivableCommercialGovernments
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusCurrentMember
Consumer 4,274us-gaap_LoansAndLeasesReceivableGrossCarryingAmountCommercial
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusCurrentMember
3,746us-gaap_LoansAndLeasesReceivableGrossCarryingAmountCommercial
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusCurrentMember
Loans receivable, gross 463,102us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusCurrentMember
424,538us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusCurrentMember
Business Activities Loans - Past due 1-29 days    
Residential 1-4 family 7,299us-gaap_LoansAndLeasesReceivableConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodOneMember
3,853us-gaap_LoansAndLeasesReceivableConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodOneMember
Residential 5+ multifamily      
Construction of residential 1-4 family      
Home equity credit 387us-gaap_LoansAndLeasesReceivableConsumerHomeEquity
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodOneMember
129us-gaap_LoansAndLeasesReceivableConsumerHomeEquity
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodOneMember
Residential real estate 7,686us-gaap_LoansAndLeasesReceivableConsumerRealEstate
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodOneMember
3,982us-gaap_LoansAndLeasesReceivableConsumerRealEstate
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodOneMember
Commercial 2,079us-gaap_LoansAndLeasesReceivableCommercial
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodOneMember
566us-gaap_LoansAndLeasesReceivableCommercial
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodOneMember
Construction of commercial    1,025us-gaap_LoansReceivableCommercialConstruction
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodOneMember
Commercial real estate 2,079us-gaap_LoansReceivableCommercialRealEstate
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodOneMember
1,591us-gaap_LoansReceivableCommercialRealEstate
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodOneMember
Farm land    23us-gaap_LoansReceivableCommercialAgricultural
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodOneMember
Vacant land 51us-gaap_LoansReceivableCommercialDevelopment
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodOneMember
139us-gaap_LoansReceivableCommercialDevelopment
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodOneMember
Real estate secured 9,816us-gaap_LoansAndLeasesReceivableCollateralForSecuredBorrowings
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodOneMember
5,735us-gaap_LoansAndLeasesReceivableCollateralForSecuredBorrowings
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodOneMember
Commercial and industrial 582us-gaap_LoansReceivableCommercialAndIndustrial
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodOneMember
262us-gaap_LoansReceivableCommercialAndIndustrial
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodOneMember
Municipal      
Consumer 47us-gaap_LoansAndLeasesReceivableGrossCarryingAmountCommercial
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodOneMember
113us-gaap_LoansAndLeasesReceivableGrossCarryingAmountCommercial
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodOneMember
Loans receivable, gross 10,445us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodOneMember
6,110us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodOneMember
Business Activities Loans - Past due 30-59 days    
Residential 1-4 family 1,250us-gaap_LoansAndLeasesReceivableConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodTwoMember
1,795us-gaap_LoansAndLeasesReceivableConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodTwoMember
Residential 5+ multifamily      
Construction of residential 1-4 family      
Home equity credit 122us-gaap_LoansAndLeasesReceivableConsumerHomeEquity
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodTwoMember
361us-gaap_LoansAndLeasesReceivableConsumerHomeEquity
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodTwoMember
Residential real estate 1,372us-gaap_LoansAndLeasesReceivableConsumerRealEstate
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodTwoMember
2,156us-gaap_LoansAndLeasesReceivableConsumerRealEstate
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodTwoMember
Commercial 602us-gaap_LoansAndLeasesReceivableCommercial
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodTwoMember
371us-gaap_LoansAndLeasesReceivableCommercial
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodTwoMember
Construction of commercial      
Commercial real estate 602us-gaap_LoansReceivableCommercialRealEstate
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodTwoMember
371us-gaap_LoansReceivableCommercialRealEstate
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodTwoMember
Farm land 13us-gaap_LoansReceivableCommercialAgricultural
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodTwoMember
  
Vacant land 7us-gaap_LoansReceivableCommercialDevelopment
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodTwoMember
  
Real estate secured 1,994us-gaap_LoansAndLeasesReceivableCollateralForSecuredBorrowings
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodTwoMember
2,527us-gaap_LoansAndLeasesReceivableCollateralForSecuredBorrowings
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodTwoMember
Commercial and industrial 91us-gaap_LoansReceivableCommercialAndIndustrial
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodTwoMember
112us-gaap_LoansReceivableCommercialAndIndustrial
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodTwoMember
Municipal      
Consumer 8us-gaap_LoansAndLeasesReceivableGrossCarryingAmountCommercial
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodTwoMember
29us-gaap_LoansAndLeasesReceivableGrossCarryingAmountCommercial
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodTwoMember
Loans receivable, gross 2,093us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodTwoMember
2,668us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodTwoMember
Business Activities Loans - Past due 60-89 days    
Residential 1-4 family 555us-gaap_LoansAndLeasesReceivableConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodThreeMember
2,622us-gaap_LoansAndLeasesReceivableConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodThreeMember
Residential 5+ multifamily    99us-gaap_LoansAndLeasesReceivableConsumerOther
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodThreeMember
Construction of residential 1-4 family      
Home equity credit 528us-gaap_LoansAndLeasesReceivableConsumerHomeEquity
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodThreeMember
125us-gaap_LoansAndLeasesReceivableConsumerHomeEquity
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodThreeMember
Residential real estate 1,083us-gaap_LoansAndLeasesReceivableConsumerRealEstate
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodThreeMember
2,846us-gaap_LoansAndLeasesReceivableConsumerRealEstate
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodThreeMember
Commercial    108us-gaap_LoansAndLeasesReceivableCommercial
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodThreeMember
Construction of commercial    139us-gaap_LoansReceivableCommercialConstruction
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodThreeMember
Commercial real estate    247us-gaap_LoansReceivableCommercialRealEstate
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodThreeMember
Farm land 723us-gaap_LoansReceivableCommercialAgricultural
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodThreeMember
  
Vacant land      
Real estate secured 1,806us-gaap_LoansAndLeasesReceivableCollateralForSecuredBorrowings
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodThreeMember
3,093us-gaap_LoansAndLeasesReceivableCollateralForSecuredBorrowings
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodThreeMember
Commercial and industrial 17us-gaap_LoansReceivableCommercialAndIndustrial
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodThreeMember
  
Municipal      
Consumer 5us-gaap_LoansAndLeasesReceivableGrossCarryingAmountCommercial
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodThreeMember
1us-gaap_LoansAndLeasesReceivableGrossCarryingAmountCommercial
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodThreeMember
Loans receivable, gross 1,828us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodThreeMember
3,094us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodThreeMember
Business Activities Loans - Past due 90-179 days    
Residential 1-4 family 976us-gaap_LoansAndLeasesReceivableConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodFourMember
353us-gaap_LoansAndLeasesReceivableConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodFourMember
Residential 5+ multifamily 89us-gaap_LoansAndLeasesReceivableConsumerOther
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodFourMember
  
Construction of residential 1-4 family      
Home equity credit 39us-gaap_LoansAndLeasesReceivableConsumerHomeEquity
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodFourMember
  
Residential real estate 1,104us-gaap_LoansAndLeasesReceivableConsumerRealEstate
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodFourMember
353us-gaap_LoansAndLeasesReceivableConsumerRealEstate
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodFourMember
Commercial    235us-gaap_LoansAndLeasesReceivableCommercial
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodFourMember
Construction of commercial      
Commercial real estate    235us-gaap_LoansReceivableCommercialRealEstate
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodFourMember
Farm land      
Vacant land 39us-gaap_LoansReceivableCommercialDevelopment
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodFourMember
  
Real estate secured 1,143us-gaap_LoansAndLeasesReceivableCollateralForSecuredBorrowings
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodFourMember
588us-gaap_LoansAndLeasesReceivableCollateralForSecuredBorrowings
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodFourMember
Commercial and industrial 36us-gaap_LoansReceivableCommercialAndIndustrial
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodFourMember
  
Municipal      
Consumer      
Loans receivable, gross 1,179us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodFourMember
588us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodFourMember
Business Activities Loans - Past due 180 days and over    
Residential 1-4 family 611us-gaap_LoansAndLeasesReceivableConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodFiveMember
134us-gaap_LoansAndLeasesReceivableConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodFiveMember
Residential 5+ multifamily      
Construction of residential 1-4 family      
Home equity credit 63us-gaap_LoansAndLeasesReceivableConsumerHomeEquity
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodFiveMember
133us-gaap_LoansAndLeasesReceivableConsumerHomeEquity
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodFiveMember
Residential real estate 674us-gaap_LoansAndLeasesReceivableConsumerRealEstate
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodFiveMember
267us-gaap_LoansAndLeasesReceivableConsumerRealEstate
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodFiveMember
Commercial 1,219us-gaap_LoansAndLeasesReceivableCommercial
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodFiveMember
1,139us-gaap_LoansAndLeasesReceivableCommercial
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodFiveMember
Construction of commercial      
Commercial real estate 1,219us-gaap_LoansReceivableCommercialRealEstate
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodFiveMember
1,139us-gaap_LoansReceivableCommercialRealEstate
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodFiveMember
Farm land 384us-gaap_LoansReceivableCommercialAgricultural
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodFiveMember
384us-gaap_LoansReceivableCommercialAgricultural
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodFiveMember
Vacant land 2,823us-gaap_LoansReceivableCommercialDevelopment
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodFiveMember
2,870us-gaap_LoansReceivableCommercialDevelopment
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodFiveMember
Real estate secured 5,100us-gaap_LoansAndLeasesReceivableCollateralForSecuredBorrowings
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodFiveMember
4,660us-gaap_LoansAndLeasesReceivableCollateralForSecuredBorrowings
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodFiveMember
Commercial and industrial    21us-gaap_LoansReceivableCommercialAndIndustrial
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodFiveMember
Municipal      
Consumer      
Loans receivable, gross 5,100us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodFiveMember
4,681us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodFiveMember
Business Activities Loans - Past due 30 days and over    
Residential 1-4 family 3,392us-gaap_LoansAndLeasesReceivableConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodSixMember
4,904us-gaap_LoansAndLeasesReceivableConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodSixMember
Residential 5+ multifamily 89us-gaap_LoansAndLeasesReceivableConsumerOther
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodSixMember
99us-gaap_LoansAndLeasesReceivableConsumerOther
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodSixMember
Construction of residential 1-4 family      
Home equity credit 752us-gaap_LoansAndLeasesReceivableConsumerHomeEquity
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodSixMember
619us-gaap_LoansAndLeasesReceivableConsumerHomeEquity
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodSixMember
Residential real estate 4,233us-gaap_LoansAndLeasesReceivableConsumerRealEstate
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodSixMember
5,622us-gaap_LoansAndLeasesReceivableConsumerRealEstate
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodSixMember
Commercial 1,821us-gaap_LoansAndLeasesReceivableCommercial
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodSixMember
1,853us-gaap_LoansAndLeasesReceivableCommercial
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodSixMember
Construction of commercial    139us-gaap_LoansReceivableCommercialConstruction
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodSixMember
Commercial real estate 1,821us-gaap_LoansReceivableCommercialRealEstate
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodSixMember
1,992us-gaap_LoansReceivableCommercialRealEstate
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodSixMember
Farm land 1,120us-gaap_LoansReceivableCommercialAgricultural
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodSixMember
384us-gaap_LoansReceivableCommercialAgricultural
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodSixMember
Vacant land 2,869us-gaap_LoansReceivableCommercialDevelopment
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodSixMember
2,870us-gaap_LoansReceivableCommercialDevelopment
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodSixMember
Real estate secured 10,043us-gaap_LoansAndLeasesReceivableCollateralForSecuredBorrowings
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodSixMember
10,868us-gaap_LoansAndLeasesReceivableCollateralForSecuredBorrowings
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodSixMember
Commercial and industrial 144us-gaap_LoansReceivableCommercialAndIndustrial
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodSixMember
133us-gaap_LoansReceivableCommercialAndIndustrial
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodSixMember
Municipal      
Consumer 13us-gaap_LoansAndLeasesReceivableGrossCarryingAmountCommercial
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodSixMember
30us-gaap_LoansAndLeasesReceivableGrossCarryingAmountCommercial
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodSixMember
Loans receivable, gross 10,200us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodSixMember
11,031us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodSixMember
Business Activities Loans - Accruing 90 days and over    
Residential 1-4 family      
Residential 5+ multifamily      
Construction of residential 1-4 family      
Home equity credit      
Residential real estate      
Commercial      
Construction of commercial      
Commercial real estate      
Farm land      
Vacant land      
Real estate secured      
Commercial and industrial 17us-gaap_LoansReceivableCommercialAndIndustrial
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyAccrualMember
  
Municipal      
Consumer      
Loans receivable, gross 17us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyAccrualMember
  
Business Activities Loans - Non-accrual    
Residential 1-4 family 2,445us-gaap_LoansAndLeasesReceivableConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyNonAccrualMember
1,525us-gaap_LoansAndLeasesReceivableConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyNonAccrualMember
Residential 5+ multifamily 89us-gaap_LoansAndLeasesReceivableConsumerOther
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyNonAccrualMember
  
Construction of residential 1-4 family      
Home equity credit 348us-gaap_LoansAndLeasesReceivableConsumerHomeEquity
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyNonAccrualMember
402us-gaap_LoansAndLeasesReceivableConsumerHomeEquity
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyNonAccrualMember
Residential real estate 2,882us-gaap_LoansAndLeasesReceivableConsumerRealEstate
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyNonAccrualMember
1,927us-gaap_LoansAndLeasesReceivableConsumerRealEstate
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyNonAccrualMember
Commercial 1,219us-gaap_LoansAndLeasesReceivableCommercial
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyNonAccrualMember
1,857us-gaap_LoansAndLeasesReceivableCommercial
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyNonAccrualMember
Construction of commercial      
Commercial real estate 1,219us-gaap_LoansReceivableCommercialRealEstate
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyNonAccrualMember
1,857us-gaap_LoansReceivableCommercialRealEstate
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyNonAccrualMember
Farm land 384us-gaap_LoansReceivableCommercialAgricultural
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyNonAccrualMember
384us-gaap_LoansReceivableCommercialAgricultural
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyNonAccrualMember
Vacant land 2,862us-gaap_LoansReceivableCommercialDevelopment
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyNonAccrualMember
2,870us-gaap_LoansReceivableCommercialDevelopment
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyNonAccrualMember
Real estate secured 7,347us-gaap_LoansAndLeasesReceivableCollateralForSecuredBorrowings
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyNonAccrualMember
7,038us-gaap_LoansAndLeasesReceivableCollateralForSecuredBorrowings
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyNonAccrualMember
Commercial and industrial 33us-gaap_LoansReceivableCommercialAndIndustrial
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyNonAccrualMember
134us-gaap_LoansReceivableCommercialAndIndustrial
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyNonAccrualMember
Municipal      
Consumer      
Loans receivable, gross 7,380us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyNonAccrualMember
7,172us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyNonAccrualMember
Acquired Loans - Current    
Residential 1-4 family 8,661us-gaap_LoansAndLeasesReceivableConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusCurrentAcquiredMember
 
Residential 5+ multifamily 8,735us-gaap_LoansAndLeasesReceivableConsumerOther
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusCurrentAcquiredMember
 
Construction of residential 1-4 family     
Home equity credit     
Residential real estate 17,396us-gaap_LoansAndLeasesReceivableConsumerRealEstate
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusCurrentAcquiredMember
 
Commercial 95,695us-gaap_LoansAndLeasesReceivableCommercial
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusCurrentAcquiredMember
 
Construction of commercial 3,045us-gaap_LoansReceivableCommercialConstruction
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusCurrentAcquiredMember
 
Commercial real estate 104,740us-gaap_LoansReceivableCommercialRealEstate
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusCurrentAcquiredMember
 
Farm land     
Vacant land     
Real estate secured 122,136us-gaap_LoansAndLeasesReceivableCollateralForSecuredBorrowings
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusCurrentAcquiredMember
 
Commercial and industrial 67,665us-gaap_LoansReceivableCommercialAndIndustrial
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusCurrentAcquiredMember
 
Municipal     
Consumer 117us-gaap_LoansAndLeasesReceivableGrossCarryingAmountCommercial
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusCurrentAcquiredMember
 
Loans receivable, gross 189,918us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusCurrentAcquiredMember
 
Acquired Loans - Past due 1-29 days    
Residential 1-4 family     
Residential 5+ multifamily     
Construction of residential 1-4 family     
Home equity credit     
Residential real estate     
Commercial 1,109us-gaap_LoansAndLeasesReceivableCommercial
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodOneAcquiredMember
 
Construction of commercial     
Commercial real estate 1,109us-gaap_LoansReceivableCommercialRealEstate
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodOneAcquiredMember
 
Farm land     
Vacant land     
Real estate secured 1,109us-gaap_LoansAndLeasesReceivableCollateralForSecuredBorrowings
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodOneAcquiredMember
 
Commercial and industrial 740us-gaap_LoansReceivableCommercialAndIndustrial
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodOneAcquiredMember
 
Municipal     
Consumer 5us-gaap_LoansAndLeasesReceivableGrossCarryingAmountCommercial
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodOneAcquiredMember
 
Loans receivable, gross 1,854us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodOneAcquiredMember
 
Acquired Loans - Past due 30-59 days    
Residential 1-4 family     
Residential 5+ multifamily     
Construction of residential 1-4 family     
Home equity credit     
Residential real estate     
Commercial 167us-gaap_LoansAndLeasesReceivableCommercial
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodTwoAcquiredMember
 
Construction of commercial     
Commercial real estate 167us-gaap_LoansReceivableCommercialRealEstate
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodTwoAcquiredMember
 
Farm land     
Vacant land     
Real estate secured 167us-gaap_LoansAndLeasesReceivableCollateralForSecuredBorrowings
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodTwoAcquiredMember
 
Commercial and industrial 89us-gaap_LoansReceivableCommercialAndIndustrial
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodTwoAcquiredMember
 
Municipal     
Consumer     
Loans receivable, gross 256us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodTwoAcquiredMember
 
Acquired Loans - Past due 60-89 days    
Residential 1-4 family     
Residential 5+ multifamily     
Construction of residential 1-4 family     
Home equity credit     
Residential real estate     
Commercial     
Construction of commercial     
Commercial real estate     
Farm land     
Vacant land     
Real estate secured     
Commercial and industrial 220us-gaap_LoansReceivableCommercialAndIndustrial
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodThreeAcquiredMember
 
Municipal     
Consumer     
Loans receivable, gross 220us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodThreeAcquiredMember
 
Acquired Loans - Past due 90-179 days    
Residential 1-4 family     
Residential 5+ multifamily     
Construction of residential 1-4 family     
Home equity credit     
Residential real estate     
Commercial 285us-gaap_LoansAndLeasesReceivableCommercial
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodFourAcquiredMember
 
Construction of commercial     
Commercial real estate 285us-gaap_LoansReceivableCommercialRealEstate
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodFourAcquiredMember
 
Farm land     
Vacant land     
Real estate secured 285us-gaap_LoansAndLeasesReceivableCollateralForSecuredBorrowings
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodFourAcquiredMember
 
Commercial and industrial     
Municipal     
Consumer     
Loans receivable, gross 285us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodFourAcquiredMember
 
Acquired Loans - Past due 180 days and over    
Residential 1-4 family 562us-gaap_LoansAndLeasesReceivableConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodFiveAcquiredMember
 
Residential 5+ multifamily     
Construction of residential 1-4 family     
Home equity credit     
Residential real estate 562us-gaap_LoansAndLeasesReceivableConsumerRealEstate
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodFiveAcquiredMember
 
Commercial 643us-gaap_LoansAndLeasesReceivableCommercial
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodFiveAcquiredMember
 
Construction of commercial     
Commercial real estate 643us-gaap_LoansReceivableCommercialRealEstate
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodFiveAcquiredMember
 
Farm land     
Vacant land     
Real estate secured 1,205us-gaap_LoansAndLeasesReceivableCollateralForSecuredBorrowings
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodFiveAcquiredMember
 
Commercial and industrial     
Municipal     
Consumer     
Loans receivable, gross 1,205us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodFiveAcquiredMember
 
Acquired Loans - Past due 30 days and over    
Residential 1-4 family 562us-gaap_LoansAndLeasesReceivableConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodSixAcquiredMember
 
Residential 5+ multifamily     
Construction of residential 1-4 family     
Home equity credit     
Residential real estate 562us-gaap_LoansAndLeasesReceivableConsumerRealEstate
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodSixAcquiredMember
 
Commercial 1,095us-gaap_LoansAndLeasesReceivableCommercial
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodSixAcquiredMember
 
Construction of commercial     
Commercial real estate 1,095us-gaap_LoansReceivableCommercialRealEstate
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodSixAcquiredMember
 
Farm land     
Vacant land     
Real estate secured 1,657us-gaap_LoansAndLeasesReceivableCollateralForSecuredBorrowings
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodSixAcquiredMember
 
Commercial and industrial 309us-gaap_LoansReceivableCommercialAndIndustrial
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodSixAcquiredMember
 
Municipal     
Consumer     
Loans receivable, gross 1,966us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyStatusPeriodSixAcquiredMember
 
Acquired Loans - Accruing 90 days and over    
Residential 1-4 family     
Residential 5+ multifamily     
Construction of residential 1-4 family     
Home equity credit     
Residential real estate     
Commercial     
Construction of commercial     
Commercial real estate     
Farm land     
Vacant land     
Real estate secured     
Commercial and industrial     
Municipal     
Consumer     
Loans receivable, gross     
Acquired Loans - Non-accrual    
Residential 1-4 family 562us-gaap_LoansAndLeasesReceivableConsumer
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyNonAccrualAcquiredMember
 
Residential 5+ multifamily     
Construction of residential 1-4 family     
Home equity credit     
Residential real estate 562us-gaap_LoansAndLeasesReceivableConsumerRealEstate
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyNonAccrualAcquiredMember
 
Commercial 1,931us-gaap_LoansAndLeasesReceivableCommercial
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyNonAccrualAcquiredMember
 
Construction of commercial     
Commercial real estate 1,931us-gaap_LoansReceivableCommercialRealEstate
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyNonAccrualAcquiredMember
 
Farm land     
Vacant land     
Real estate secured 2,493us-gaap_LoansAndLeasesReceivableCollateralForSecuredBorrowings
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyNonAccrualAcquiredMember
 
Commercial and industrial     
Municipal     
Consumer     
Loans receivable, gross $ 2,493us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis
= SAL_LoansReceivableDelinquencyNonAccrualAcquiredMember