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Financial Instruments with Off-Balance Sheet Risk and Derivative Transactions - Commitments (Details) - USD ($) $ in Thousands | Sep. 30, 2015 | Dec. 31, 2014
--- | --- | ---
Company's contractual commitments due to letters of credit |  |
Total letters of credit | $ 11,928 | $ 11,527
Fixed |  |
Company's contractual commitments due to letters of credit |  |
Total letters of credit | 459 | 471
Variable |  |
Company's contractual commitments due to letters of credit |  |
Total letters of credit | 11,469 | 11,056
Borrower |  |
Company's contractual commitments due to letters of credit |  |
Total letters of credit | 11,353 | 10,955
Borrower | Fixed |  |
Company's contractual commitments due to letters of credit |  |
Total letters of credit | 459 | 471
Borrower | Variable |  |
Company's contractual commitments due to letters of credit |  |
Total letters of credit | 10,894 | 10,484
Borrower | Financial standby |  |
Company's contractual commitments due to letters of credit |  |
Total letters of credit | 3,552 | 4,800
Borrower | Financial standby | Fixed |  |
Company's contractual commitments due to letters of credit |  |
Total letters of credit | 55 | 55
Borrower | Financial standby | Variable |  |
Company's contractual commitments due to letters of credit |  |
Total letters of credit | 3,497 | 4,745
Borrower | Commercial standby |  |
Company's contractual commitments due to letters of credit |  |
Total letters of credit | 47 | 49
Borrower | Commercial standby | Variable |  |
Company's contractual commitments due to letters of credit |  |
Total letters of credit | 47 | 49
Borrower | Performance standby |  |
Company's contractual commitments due to letters of credit |  |
Total letters of credit | 7,754 | 6,106
Borrower | Performance standby | Fixed |  |
Company's contractual commitments due to letters of credit |  |
Total letters of credit | 404 | 416
Borrower | Performance standby | Variable |  |
Company's contractual commitments due to letters of credit |  |
Total letters of credit | 7,350 | 5,690
Nonborrower |  |
Company's contractual commitments due to letters of credit |  |
Total letters of credit | 575 | 572
Nonborrower | Variable |  |
Company's contractual commitments due to letters of credit |  |
Total letters of credit | 575 | 572
Nonborrower | Performance standby |  |
Company's contractual commitments due to letters of credit |  |
Total letters of credit | 575 | 572
Nonborrower | Performance standby | Variable |  |
Company's contractual commitments due to letters of credit |  |
Total letters of credit | $ 575 | $ 572

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. + References No definition available. + Details
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