Other Assets (Additional Information on Investments in Affordable Housing Projects) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Investments in Affordable Housing Projects [Abstract]
Investments in affordable housing projects included in other assets	$ 167,431	$ 103,214
Unfunded commitments related to affordable housing projects included in other liabilities	1,900	1,900
Investment amortization included in provision for income taxes	2,097	1,916	$ 1,844
Amount recognized as income tax benefit	540	585	$ 623
Affordable housing project
Investments in Affordable Housing Projects [Abstract]
Investments in affordable housing projects included in other assets	29,939	10,895
Unfunded commitments related to affordable housing projects included in other liabilities	20,286	1,115
Investment in affordable housing tax credits	2,042	1,885
Investment in affordable housing tax benefits	$ 540	$ 585

Represents the realization of federal tax operating losses during the period.

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Amount of affordable housing tax credits and other tax benefits recognized.

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Amount of amortization expense of investment in qualified affordable housing projects.

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A credit or adjustment for government or taxing authority authorized decrease in taxes owed as a result of meeting certain tax policy conditions.

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Amount of assets classified as other.

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