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Share-Based Compensation Plans (Narrative) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense	$ 0
Stock options awarded	0	0
Stock options activity	$ 0
Restricted Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options awarded granted	0
Unrecognized compensation expense	$ 3,500,000
Expected recognition expense period, weighted average period in years	2 years 4 months 24 days
PSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options awarded granted	23,170
Management Stock Incentive Plan [Member] | ROAE Return on Average Equity [Member] | PSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage upon achievement of targets	50.00%
Required service period	3 years
Share-based vesting description	The shares earned based on the achievement of the ROAE performance requirement, if any, will vest on the third anniversary of the grant date assuming the recipient’s continuous service to the Company.
Management Stock Incentive Plan [Member] | ROAA Performance Requirement [Member] | PSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage upon achievement of targets	50.00%
Required service period	3 years
Share-based vesting description	The shares earned based on the achievement of the ROAA performance requirement, if any, will vest on the third anniversary of the grant date assuming the recipient’s continuous service to the Company.

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- Definition

Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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