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Bank Premises and Equipment - Summary (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Bank premises and equipment, gross	$ 29,530	$ 25,750
Accumulated depreciation and amortization	(21,972)	(20,831)
Bank premises and equipment, net	7,558	4,919
Leasehold improvements
Property, Plant and Equipment [Line Items]
Bank premises and equipment, gross	15,282	14,426
Furniture and equipment
Property, Plant and Equipment [Line Items]
Bank premises and equipment, gross	11,384	10,959
Buildings
Property, Plant and Equipment [Line Items]
Bank premises and equipment, gross	1,195	0
Land
Property, Plant and Equipment [Line Items]
Bank premises and equipment, gross	1,170	0
Finance lease right-of-use assets
Property, Plant and Equipment [Line Items]
Bank premises and equipment, gross	$ 499	$ 365

X

- Definition

Amount of accumulated depreciation and amortization from plant, property, and equipment and right-of-use asset from finance lease.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
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Amount, after accumulated depreciation and amortization, of property, plant, and equipment and finance lease right-of-use asset.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section 50
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-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

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Amount, before accumulated depreciation and amortization, of property, plant, and equipment and finance lease right-of-use asset.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
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-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

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