Premises and Equipment, Net (Depreciation and Amortization Expense Included in Consolidated Statements of Income) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Depreciation and amortization	$ 7,893	$ 8,213	$ 6,477
Premises and Equipment, Net [Member]
Property, Plant and Equipment [Line Items]
Depreciation and amortization	4,746	4,981	5,148
Premises and Equipment, Net [Member] \| Occupancy and Equipment Expense [Member]
Property, Plant and Equipment [Line Items]
Depreciation and amortization	4,109	4,382	4,473
Premises and Equipment, Net [Member] \| Computer and Data Processing Expense [Member]
Property, Plant and Equipment [Line Items]
Depreciation and amortization	$ 637	$ 599	$ 675

The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration