Loans and Allowance for Loan Losses - Summary of loan delinquencies at recorded investment (Details 3) - Loans receivable $ in Thousands | Mar. 31, 2016USD ($)Securities | Dec. 31, 2015USD ($)Securities |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Number of loan receivable, recorded investment, past due | Securities | 53 | 67 |
Loan receivable, recorded investment, past due | $ 13,100 | $ 14,945 |
Loan receivable, recorded investment, past due 90 days or more and still accruing | | |
30-59 Days Past Due | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Number of loan receivable, recorded investment, past due | Securities | 23 | 38 |
Loan receivable, recorded investment, past due | $ 3,654 | $ 4,265 |
60-89 Days Past Due | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Number of loan receivable, recorded investment, past due | Securities | 9 | 7 |
Loan receivable, recorded investment, past due | $ 1,154 | $ 1,223 |
> 90 Days Past Due | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Number of loan receivable, recorded investment, past due | Securities | 21 | 22 |
Loan receivable, recorded investment, past due | $ 8,292 | $ 9,457 |
Real estate Residential | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Number of loan receivable, recorded investment, past due | Securities | 34 | 38 |
Loan receivable, recorded investment, past due | $ 9,899 | $ 10,546 |
Loan receivable, recorded investment, past due 90 days or more and still accruing | | |
Real estate Residential | 30-59 Days Past Due | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Number of loan receivable, recorded investment, past due | Securities | 14 | 18 |
Loan receivable, recorded investment, past due | $ 2,952 | $ 3,379 |
Real estate Residential | 60-89 Days Past Due | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Number of loan receivable, recorded investment, past due | Securities | 7 | 5 |
Loan receivable, recorded investment, past due | $ 1,045 | $ 863 |
Real estate Residential | > 90 Days Past Due | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Number of loan receivable, recorded investment, past due | Securities | 13 | 15 |
Loan receivable, recorded investment, past due | $ 5,902 | $ 6,304 |
Real estate Commercial | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Number of loan receivable, recorded investment, past due | Securities | 2 | 3 |
Loan receivable, recorded investment, past due | $ 1,076 | $ 1,312 |
Loan receivable, recorded investment, past due 90 days or more and still accruing | | |
Real estate Commercial | 30-59 Days Past Due | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Number of loan receivable, recorded investment, past due | Securities | | 2 |
Loan receivable, recorded investment, past due | | $ 318 |
Real estate Commercial | 60-89 Days Past Due | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Number of loan receivable, recorded investment, past due | Securities | 1 | |
Loan receivable, recorded investment, past due | $ 108 | |
Real estate Commercial | > 90 Days Past Due | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Number of loan receivable, recorded investment, past due | Securities | 1 | 1 |
Loan receivable, recorded investment, past due | $ 968 | $ 994 |
Real estate Construction | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Number of loan receivable, recorded investment, past due | Securities | 1 | 1 |
Loan receivable, recorded investment, past due | $ 187 | $ 187 |
Loan receivable, recorded investment, past due 90 days or more and still accruing | | |
Real estate Construction | 30-59 Days Past Due | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Number of loan receivable, recorded investment, past due | Securities | | |
Loan receivable, recorded investment, past due | | |
Real estate Construction | 60-89 Days Past Due | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Number of loan receivable, recorded investment, past due | Securities | | |
Loan receivable, recorded investment, past due | | |
Real estate Construction | > 90 Days Past Due | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Number of loan receivable, recorded investment, past due | Securities | 1 | 1 |
Loan receivable, recorded investment, past due | $ 187 | $ 187 |
Installment | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Number of loan receivable, recorded investment, past due | Securities | 1 | 3 |
Loan receivable, recorded investment, past due | $ 1 | $ 38 |
Loan receivable, recorded investment, past due 90 days or more and still accruing | | |
Installment | 30-59 Days Past Due | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Number of loan receivable, recorded investment, past due | Securities | | 3 |
Loan receivable, recorded investment, past due | | $ 38 |
Installment | 60-89 Days Past Due | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Number of loan receivable, recorded investment, past due | Securities | 1 | |
Loan receivable, recorded investment, past due | $ 1 | |
Installment | > 90 Days Past Due | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Number of loan receivable, recorded investment, past due | Securities | | |
Loan receivable, recorded investment, past due | | |
Commercial | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Number of loan receivable, recorded investment, past due | Securities | 5 | 6 |
Loan receivable, recorded investment, past due | $ 1,302 | $ 1,905 |
Loan receivable, recorded investment, past due 90 days or more and still accruing | | |
Commercial | 30-59 Days Past Due | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Number of loan receivable, recorded investment, past due | Securities | 2 | 4 |
Loan receivable, recorded investment, past due | $ 207 | $ 153 |
Commercial | 60-89 Days Past Due | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Number of loan receivable, recorded investment, past due | Securities | | |
Loan receivable, recorded investment, past due | | |
Commercial | > 90 Days Past Due | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Number of loan receivable, recorded investment, past due | Securities | 3 | 2 |
Loan receivable, recorded investment, past due | $ 1,095 | $ 1,752 |
Collateral | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Number of loan receivable, recorded investment, past due | Securities | 4 | 8 |
Loan receivable, recorded investment, past due | $ 40 | $ 78 |
Loan receivable, recorded investment, past due 90 days or more and still accruing | | |
Collateral | 30-59 Days Past Due | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Number of loan receivable, recorded investment, past due | Securities | 3 | 7 |
Loan receivable, recorded investment, past due | $ 29 | $ 68 |
Collateral | 60-89 Days Past Due | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Number of loan receivable, recorded investment, past due | Securities | | |
Loan receivable, recorded investment, past due | | |
Collateral | > 90 Days Past Due | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Number of loan receivable, recorded investment, past due | Securities | 1 | 1 |
Loan receivable, recorded investment, past due | $ 11 | $ 10 |
Home equity line of credit | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Number of loan receivable, recorded investment, past due | Securities | 5 | 7 |
Loan receivable, recorded investment, past due | $ 564 | $ 850 |
Loan receivable, recorded investment, past due 90 days or more and still accruing | | |
Home equity line of credit | 30-59 Days Past Due | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Number of loan receivable, recorded investment, past due | Securities | 3 | 3 |
Loan receivable, recorded investment, past due | $ 435 | $ 280 |
Home equity line of credit | 60-89 Days Past Due | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Number of loan receivable, recorded investment, past due | Securities | | 2 |
Loan receivable, recorded investment, past due | | $ 360 |
Home equity line of credit | > 90 Days Past Due | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Number of loan receivable, recorded investment, past due | Securities | 2 | 2 |
Loan receivable, recorded investment, past due | $ 129 | $ 210 |
Demand | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Number of loan receivable, recorded investment, past due | Securities | 1 | 1 |
Loan receivable, recorded investment, past due | $ 31 | $ 29 |
Loan receivable, recorded investment, past due 90 days or more and still accruing | | |
Demand | 30-59 Days Past Due | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Number of loan receivable, recorded investment, past due | Securities | 1 | 1 |
Loan receivable, recorded investment, past due | $ 31 | $ 29 |
Demand | 60-89 Days Past Due | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Number of loan receivable, recorded investment, past due | Securities | | |
Loan receivable, recorded investment, past due | | |
Demand | > 90 Days Past Due | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Number of loan receivable, recorded investment, past due | Securities | | |
Loan receivable, recorded investment, past due | | |
Revolving credit | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Number of loan receivable, recorded investment, past due | Securities | | |
Loan receivable, recorded investment, past due | | |
Loan receivable, recorded investment, past due 90 days or more and still accruing | | |
Revolving credit | 30-59 Days Past Due | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Number of loan receivable, recorded investment, past due | Securities | | |
Loan receivable, recorded investment, past due | | |
Revolving credit | 60-89 Days Past Due | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Number of loan receivable, recorded investment, past due | Securities | | |
Loan receivable, recorded investment, past due | | |
Revolving credit | > 90 Days Past Due | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Number of loan receivable, recorded investment, past due | Securities | | |
Loan receivable, recorded investment, past due | | |
Resort | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Number of loan receivable, recorded investment, past due | Securities | | |
Loan receivable, recorded investment, past due | | |
Loan receivable, recorded investment, past due 90 days or more and still accruing | | |
Resort | 30-59 Days Past Due | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Number of loan receivable, recorded investment, past due | Securities | | |
Loan receivable, recorded investment, past due | | |
Resort | 60-89 Days Past Due | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Number of loan receivable, recorded investment, past due | Securities | | |
Loan receivable, recorded investment, past due | | |
Resort | > 90 Days Past Due | | |
Accounts, Notes, Loans and Financing Receivable [Line Items] | | |
Number of loan receivable, recorded investment, past due | Securities | | |
Loan receivable, recorded investment, past due | | |