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Fair Value Measurements (Details) - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Investment securities | $ 589,268 | $ 538,108
Loans held for sale | 25,096 | 51,629
Other equity investments | 218 | 218
Assets measured at a fair value on a recurring basis | 616,663 | 589,851
Derivative liability | 10 | 692
Liabilities measured at a fair value on a recurring basis | 10 | 747
Interest Rate Swap [Member] |  |
Derivative asset | 2,201 |
Derivative liability |  | 692
Interest Rate Swap [Member] | Derivative Financial Instruments, Assets [Member] |  |
Derivative asset | 2,256 |
US Agency Securities [Member] |  |
Investment securities | 195,984 | 106,142
Residential Mortgage Backed Securities [Member] |  |
Investment securities | 317,836 | 326,239
Loans held for sale | 25,096 | 51,629
Municipal Bonds [Member] |  |
Investment securities | 62,057 | 95,930
Corporate Bonds [Member] |  |
Investment securities | 13,173 | 9,579
Mortgage Banking Derivative [Member] |  |
Derivative asset | 43 | 114
Derivative liability |  | 55
Fair Value, Inputs, Level 2 [Member] |  |
Investment securities | 587,550 |
Loans held for sale | 25,096 | 51,629
Assets measured at a fair value on a recurring basis | 614,902 | 588,019
Fair Value, Inputs, Level 2 [Member] | Interest Rate Swap [Member] |  |
Derivative asset | 2,256 |
Derivative liability |  | 692
Liabilities measured at a fair value on a recurring basis |  | 692
Fair Value, Inputs, Level 2 [Member] | US Agency Securities [Member] |  |
Investment securities | 195,984 | 106,142
Fair Value, Inputs, Level 2 [Member] | Residential Mortgage Backed Securities [Member] |  |
Investment securities | 317,836 | 326,239
Loans held for sale |  | 51,629
Fair Value, Inputs, Level 2 [Member] | Municipal Bonds [Member] |  |
Investment securities | 62,057 | 95,930
Fair Value, Inputs, Level 2 [Member] | Corporate Bonds [Member] |  |
Investment securities | 11,673 | 8,079
Fair Value, Inputs, Level 3 [Member] |  |
Investment securities | 1,718 |
Other equity investments | 218 | 218
Assets measured at a fair value on a recurring basis | 1,761 | 1,832
Derivative liability | 10 |
Liabilities measured at a fair value on a recurring basis | 10 | 55
Fair Value, Inputs, Level 3 [Member] | Corporate Bonds [Member] |  |
Investment securities | 1,500 | 1,500
Fair Value, Inputs, Level 3 [Member] | Mortgage Banking Derivative [Member] |  |
Derivative asset | $ 43 | 114
Derivative liability |  | $ 55

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