Loans and Allowance for Loan Losses - Summary of Troubled Debt Restructured Loans (Details) - USD ($) $ in Thousands |
Dec. 31, 2016 |
Dec. 31, 2015 |
|---|---|---|
| Loans And Leases Receivable Disclosure [Abstract] | ||
| Accruing troubled debt restructured loans | $ 5,572 | $ 7,049 |
| Non-accrual troubled debt restructured loans | 1,204 | 2,503 |
| Total troubled debt restructured loans | $ 6,776 | $ 9,552 |