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Acquisitions (Details) - Talmer - USD ($) | Dec. 31, 2016 | Oct. 28, 2016
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Business Acquisition [Line Items] |  |
Loans |  | $ 223,800,000
Deposits | $ 48,900,000 | 48,900,000
Assets qcquired: |  |
Cash on hand |  | 122,000
Loans, net of purchase accounting adjustments |  | 220,988,000
Premises and equipment, net |  | 230,000
Goodwill |  | 8,375,000
Core deposit intangible |  | 659,000
Other assets acquired, including accrued interest, prepaids |  | 573,000
Liabilities assumed: |  |
Deposits- noninterest bearing demand |  | 28,850,000
Deposits- interest bearing - Savings, NOW, Moneymarket |  | 17,941,000
Deposits - Time |  | 2,103,000
Other liabilities assumed, including escrow deposits and payables |  | 574,000
Net assets acquired, or total cash paid for acquisition |  | $ 181,479,000
Acquisition expenses | $ 269,000 |

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