Employee Benefit Plans (Options Outstanding by Exercise Price Range) (Details) - Officer and Employee Plans [Member] - $ / shares	3 Months Ended
Mar. 31, 2021	Dec. 31, 2020
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Prices (in dollars per share)	$ 10.37	$ 10.19
Number Outstanding (in shares)	83,652	99,617
Options Outstanding, Weighted Average Remaining Life	2 years 6 months 7 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 10.37
Exercisable (in shares)	83,652
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 10.37
6.60 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Prices (in dollars per share)	$ 6.60
Number Outstanding (in shares)	19,250
Options Outstanding, Weighted Average Remaining Life	11 months 12 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 6.60
Exercisable (in shares)	19,250
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 6.60
9.48 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Prices (in dollars per share)	$ 9.48
Number Outstanding (in shares)	18,000
Options Outstanding, Weighted Average Remaining Life	1 year 11 months 12 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 9.48
Exercisable (in shares)	18,000
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 9.48
9.60 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Prices (in dollars per share)	$ 9.60
Number Outstanding (in shares)	22,250
Options Outstanding, Weighted Average Remaining Life	2 years 9 months
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 9.60
Exercisable (in shares)	22,250
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 9.60
11.76 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Prices (in dollars per share)	$ 11.76
Number Outstanding (in shares)	2,266
Options Outstanding, Weighted Average Remaining Life	1 year 2 months 30 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 11.76
Exercisable (in shares)	2,266
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 11.76
15.05 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Prices (in dollars per share)	$ 15.05
Number Outstanding (in shares)	21,886
Options Outstanding, Weighted Average Remaining Life	4 years 3 months 11 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 15.05
Exercisable (in shares)	21,886
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 15.05

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iii)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

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Number of options outstanding, including both vested and non-vested options.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
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-Section 50
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-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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Weighted average exercise price as of the balance sheet date for those equity-based payment arrangements exercisable and outstanding.

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The weighted average price as of the balance sheet date at which grantees could acquire the underlying shares with respect to all outstanding stock options which are in the customized range of exercise prices.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition

Weighted average remaining contractual term of outstanding stock options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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