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Loans, Loans Modified in a Troubled Debt Restructuring (Details) $ in Thousands | 6 Months Ended
--- | ---
Jun. 30, 2018 USD ($) loan | Jun. 30, 2017 USD ($) loan
Financing Receivable, Modifications [Line Items] |  |
Number of Loans | loan | 23 | 88
Recorded Investment | $ 4,035 | $ 35,020
Unpaid Principal Balance | $ 4,099 | $ 56,700
Commercial and industrial |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Loans | loan | 1 | 24
Recorded Investment | $ 47 | $ 30,935
Unpaid Principal Balance | $ 47 | $ 52,260
Commercial real estate — owner occupied |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Loans | loan | 0 | 2
Recorded Investment | $ 0 | $ 716
Unpaid Principal Balance | $ 0 | $ 716
Commercial real estate — investor |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Loans | loan | 1 | 0
Recorded Investment | $ 984 | $ 0
Unpaid Principal Balance | $ 1,031 | $ 0
Residential mortgage |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Loans | loan | 10 | 36
Recorded Investment | $ 2,064 | $ 2,695
Unpaid Principal Balance | $ 2,064 | $ 2,805
Home equity |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Loans | loan | 10 | 26
Recorded Investment | $ 935 | $ 674
Unpaid Principal Balance | $ 949 | $ 919
Other consumer |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Loans | loan | 1 | 0
Recorded Investment | $ 5 | $ 0
Unpaid Principal Balance | $ 8 | $ 0

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