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Restructuring Charges (Summary of Consolidated Statements of Income Classification of Restructuring Charges) (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2020
Restructuring Cost And Reserve [Line Items]
Total	$ 1,586	$ 1,586
Salaries and Employee Benefits [Member]
Restructuring Cost And Reserve [Line Items]
Severance costs	224	224
Restructuring Charges [Member]
Restructuring Cost And Reserve [Line Items]
Lease termination costs	454	454
Valuation adjustments	$ 908	$ 908

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Valuation adjustments on restructuring charges.

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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Includes, but is not limited to, one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, and relocating employees, and termination benefits associated with an ongoing benefit arrangement. Excludes expenses associated with special or contractual termination benefits, a discontinued operation or an asset retirement obligation.

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Amount, after cash payment, of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation.

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