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Loans - Major Classifications - Loan Concentrations (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Oct. 28, 2016
Loans |  |  |
Growth in loan balance | $ 138,800 |  |
Total real estate |  |  |
Loans |  |  |
Loans receivable as a percentage of total portfolio | 78.00% | 79.70% |
Talmer |  |  |
Loans |  |  |
Loans |  |  | $ 220,988

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