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Allowance for Credit Losses - Average Recorded Investment and Interest Income (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 | Jun. 30, 2019
Originated |  |
Financing Receivable, Impaired [Line Items] |  |
Average Recorded Investment With No Related Allowance | $ 9,058 | $ 11,746
Interest Income Recognized With No Related Allowance | 0 | 0
Average Recorded Investment With Related Allowance | 2,272 | 1,193
Interest Income Recognized With Related Allowance | 0 | 0
Total Average Recorded Investment | 11,330 | 12,939
Total Interest Income Recognized | 0 | 0
Originated | Commercial and industrial | Commercial and industrial other |  |
Financing Receivable, Impaired [Line Items] |  |
Average Recorded Investment With No Related Allowance | 1,331 | 2,352
Interest Income Recognized With No Related Allowance | 0 | 0
Average Recorded Investment With Related Allowance | 693 | 487
Interest Income Recognized With Related Allowance | 0 | 0
Originated | Commercial real estate | Commercial and industrial other |  |
Financing Receivable, Impaired [Line Items] |  |
Average Recorded Investment With No Related Allowance | 3,718 | 5,400
Interest Income Recognized With No Related Allowance | 0 | 0
Average Recorded Investment With Related Allowance | 1,579 | 706
Interest Income Recognized With Related Allowance | 0 | 0
Originated | Residential real estate | Home equity |  |
Financing Receivable, Impaired [Line Items] |  |
Average Recorded Investment With No Related Allowance | 4,009 | 3,994
Interest Income Recognized With No Related Allowance | 0 | 0
Acquired |  |
Financing Receivable, Impaired [Line Items] |  |
Total Average Recorded Investment | 3,420 | 3,522
Total Interest Income Recognized | 0 | 0
Acquired | Commercial and industrial | Commercial and industrial other |  |
Financing Receivable, Impaired [Line Items] |  |
Average Recorded Investment With No Related Allowance | 12 | 35
Interest Income Recognized With No Related Allowance | 0 | 0
Acquired | Commercial real estate | Commercial and industrial other |  |
Financing Receivable, Impaired [Line Items] |  |
Average Recorded Investment With No Related Allowance | 851 | 896
Interest Income Recognized With No Related Allowance | 0 | 0
Acquired | Residential real estate | Home equity |  |
Financing Receivable, Impaired [Line Items] |  |
Average Recorded Investment With No Related Allowance | 2,557 | 2,591
Interest Income Recognized With No Related Allowance | $ 0 | $ 0

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