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Segment Reporting (Business Segment Assets) (Details) - USD ($) $ in Thousands | Jun. 30, 2018 | Dec. 31, 2017
--- | --- | ---
Segment Reporting Information [Line Items] |  |
Goodwill | $ 68,412 | $ 65,840
Other intangible assets, net | 10,776 | 8,863
Total assets | 4,191,315 | 4,105,210
Banking [Member] |  |
Segment Reporting Information [Line Items] |  |
Goodwill | 48,536 | 48,536
Other intangible assets, net | 288 | 373
Total assets | 4,150,789 | 4,069,086
Non-Banking [Member] |  |
Segment Reporting Information [Line Items] |  |
Goodwill | 19,876 | 17,304
Other intangible assets, net | 10,488 | 8,490
Total assets | 35,907 | 31,466
Holding Company and Other [Member] |  |
Segment Reporting Information [Line Items] |  |
Total assets | $ 4,619 | $ 4,658

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