Financing Receivable Credit Quality Indicators (Details) - USD ($) $ in Thousands		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year		$ 2,812,901
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year		1,341,947
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year		896,983
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year		857,830
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year		698,323
Financing Receivable, Originated, More than Five Years before Current Fiscal Year		1,314,136
Financing Receivable, Revolving		1,447,865
Total loans		9,392,866	$ 8,873,639	$ 6,906,194
Commercial And Industrial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, before Allowance for Credit Loss		2,103,152	1,395,036
Financing Receivable, Year One, Originated, Current Fiscal Year		1,086,474
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year		145,038
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year		118,153
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year		38,425
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year		21,441
Financing Receivable, Originated, More than Five Years before Current Fiscal Year		20,615
Financing Receivable, Revolving		670,468
Total loans		2,103,152	1,395,036	1,093,629
Commercial Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, before Allowance for Credit Loss		4,173,927	4,002,359
Financing Receivable, Year One, Originated, Current Fiscal Year		1,108,100
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year		784,944
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year		514,868
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year		574,542
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year		401,380
Financing Receivable, Originated, More than Five Years before Current Fiscal Year		742,661
Financing Receivable, Revolving		32,695
Total loans		4,173,927	4,002,359	3,251,248
Construction Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, before Allowance for Credit Loss		553,929	547,293
Financing Receivable, Year One, Originated, Current Fiscal Year		273,207
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year		177,901
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year		31,226
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year		32,538
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year		0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year		6,689
Financing Receivable, Revolving		31,780
Total loans		553,929	547,293	365,165
Small Business [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, before Allowance for Credit Loss		175,023	174,497
Financing Receivable, Year One, Originated, Current Fiscal Year		42,397
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year		28,199
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year		19,634
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year		13,437
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year		13,980
Financing Receivable, Originated, More than Five Years before Current Fiscal Year		20,194
Financing Receivable, Revolving		37,182
Total loans		175,023	174,497	164,676
Residential Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, before Allowance for Credit Loss		1,296,183	1,590,569
Financing Receivable, Year One, Originated, Current Fiscal Year		219,595
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year		146,058
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year		160,849
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year		144,638
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year		219,726
Financing Receivable, Originated, More than Five Years before Current Fiscal Year		405,317
Financing Receivable, Revolving		0
Total loans		1,296,183	$ 1,590,569	$ 923,294
Home Equity Loan [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year		82,312
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year		59,409
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year		52,088
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year		53,570
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year		41,181
Financing Receivable, Originated, More than Five Years before Current Fiscal Year		111,800
Financing Receivable, Revolving		663,412
Total loans		1,068,790
Consumer Loan [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year		816
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year		398
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year		165
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year		680
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year		615
Financing Receivable, Originated, More than Five Years before Current Fiscal Year		6,860
Financing Receivable, Revolving		12,328
Total loans		21,862
Revolving converted to term [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving		22,881
Revolving converted to term [Member] | Commercial And Industrial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving		2,538
Revolving converted to term [Member] | Commercial Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving		14,737
Revolving converted to term [Member] | Construction Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving		588
Revolving converted to term [Member] | Small Business [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving		0
Revolving converted to term [Member] | Residential Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving		0
Revolving converted to term [Member] | Home Equity Loan [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving		5,018
Revolving converted to term [Member] | Consumer Loan [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving		0
Pass [Member] | Commercial And Industrial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	[1]	1,074,773
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year		141,859
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year		97,908
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year		30,431
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year		19,426
Financing Receivable, Originated, More than Five Years before Current Fiscal Year		19,749
Financing Receivable, Revolving		631,049
Total loans		2,017,733
Pass [Member] | Commercial Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year		1,054,345
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year		726,276
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year		480,725
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year		544,826
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year		372,542
Financing Receivable, Originated, More than Five Years before Current Fiscal Year		664,256
Financing Receivable, Revolving		19,085
Total loans		3,876,792
Pass [Member] | Construction Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year		255,679
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year		167,948
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year		30,706
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year		32,538
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year		0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year		6,689
Financing Receivable, Revolving		31,705
Total loans		525,853
Pass [Member] | Small Business [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year		41,713
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year		27,751
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year		19,497
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year		13,411
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year		13,837
Financing Receivable, Originated, More than Five Years before Current Fiscal Year		19,624
Financing Receivable, Revolving		35,451
Total loans		171,284
Pass [Member] | Residential Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year		219,595
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year		146,058
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year		160,422
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year		144,638
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year		215,568
Financing Receivable, Originated, More than Five Years before Current Fiscal Year		401,279
Financing Receivable, Revolving		0
Total loans		1,287,560
Pass [Member] | Home Equity Loan [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year		82,312
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year		59,409
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year		52,088
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year		53,570
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year		41,181
Financing Receivable, Originated, More than Five Years before Current Fiscal Year		111,360
Financing Receivable, Revolving		661,575
Total loans		1,066,158
Pass [Member] | Consumer Loan [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year		816
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year		398
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year		165
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year		665
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year		615
Financing Receivable, Originated, More than Five Years before Current Fiscal Year		6,749
Financing Receivable, Revolving		12,317
Total loans		21,725
Pass [Member] | Revolving converted to term [Member] | Commercial And Industrial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving		2,538
Pass [Member] | Revolving converted to term [Member] | Commercial Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving		14,737
Pass [Member] | Revolving converted to term [Member] | Construction Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving		588
Pass [Member] | Revolving converted to term [Member] | Small Business [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving		0
Pass [Member] | Revolving converted to term [Member] | Residential Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving		0
Pass [Member] | Revolving converted to term [Member] | Home Equity Loan [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving		4,663
Pass [Member] | Revolving converted to term [Member] | Consumer Loan [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving		0
Potential Weakness [Member] | Commercial And Industrial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year		9,020
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year		1,869
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year		670
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year		4,997
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year		1,539
Financing Receivable, Originated, More than Five Years before Current Fiscal Year		294
Financing Receivable, Revolving		20,766
Total loans		39,155
Potential Weakness [Member] | Commercial Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year		27,877
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year		55,166
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year		30,286
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year		19,531
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year		25,462
Financing Receivable, Originated, More than Five Years before Current Fiscal Year		71,252
Financing Receivable, Revolving		13,610
Total loans		243,184
Potential Weakness [Member] | Construction Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year		17,528
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year		9,953
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year		520
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year		0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year		0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year		0
Financing Receivable, Revolving		75
Total loans		28,076
Potential Weakness [Member] | Small Business [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year		0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year		10
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year		15
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year		15
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year		6
Financing Receivable, Originated, More than Five Years before Current Fiscal Year		217
Financing Receivable, Revolving		822
Total loans		1,085
Potential Weakness [Member] | Revolving converted to term [Member] | Commercial Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving		0
Potential Weakness [Member] | Revolving converted to term [Member] | Construction Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving		0
Potential Weakness [Member] | Revolving converted to term [Member] | Small Business [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving		0
Definite Weakness Loss Unlikely [Member] | Commercial And Industrial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year		2,009
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year		1,310
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year		19,575
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year		2,997
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year		320
Financing Receivable, Originated, More than Five Years before Current Fiscal Year		429
Financing Receivable, Revolving		6,991
Total loans		33,631
Definite Weakness Loss Unlikely [Member] | Commercial Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year		25,878
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year		3,502
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year		3,857
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year		10,185
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year		3,376
Financing Receivable, Originated, More than Five Years before Current Fiscal Year		7,153
Financing Receivable, Revolving		0
Total loans		53,951
Definite Weakness Loss Unlikely [Member] | Construction Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year		0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year		0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year		0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year		0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year		0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year		0
Definite Weakness Loss Unlikely [Member] | Small Business [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year		684
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year		438
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year		122
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year		11
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year		137
Financing Receivable, Originated, More than Five Years before Current Fiscal Year		353
Financing Receivable, Revolving		883
Total loans		2,628
Definite Weakness Loss Unlikely [Member] | Revolving converted to term [Member] | Commercial And Industrial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving		0
Definite Weakness Loss Unlikely [Member] | Revolving converted to term [Member] | Commercial Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving		0
Definite Weakness Loss Unlikely [Member] | Revolving converted to term [Member] | Construction Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving		0
Definite Weakness Loss Unlikely [Member] | Revolving converted to term [Member] | Small Business [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving		0
Partial Loss Probable [Member] | Commercial And Industrial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year		672
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year		0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year		0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year		0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year		156
Financing Receivable, Originated, More than Five Years before Current Fiscal Year		143
Financing Receivable, Revolving		11,662
Total loans		12,633
Partial Loss Probable [Member] | Commercial Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year		0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year		0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year		0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year		0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year		0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year		0
Financing Receivable, Revolving		0
Total loans		0
Partial Loss Probable [Member] | Construction Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year		0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year		0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year		0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year		0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year		0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year		0
Financing Receivable, Revolving		0
Total loans		0
Partial Loss Probable [Member] | Small Business [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year		0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year		0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year		0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year		0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year		0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year		0
Financing Receivable, Revolving		26
Total loans		26
Partial Loss Probable [Member] | Revolving converted to term [Member] | Commercial And Industrial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving		0
Partial Loss Probable [Member] | Revolving converted to term [Member] | Commercial Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving		0
Partial Loss Probable [Member] | Revolving converted to term [Member] | Construction Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving		0
Partial Loss Probable [Member] | Revolving converted to term [Member] | Small Business [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving		0
Definite Loss [Member] | Commercial And Industrial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year		0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year		0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year		0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year		0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year		0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year		0
Financing Receivable, Revolving		0
Definite Loss [Member] | Commercial Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year		0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year		0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year		0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year		0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year		0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year		0
Financing Receivable, Revolving		0
Total loans		0
Definite Loss [Member] | Construction Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year		0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year		0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year		0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year		0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year		0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year		0
Financing Receivable, Revolving		0
Total loans		0
Definite Loss [Member] | Small Business [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year		0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year		0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year		0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year		0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year		0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year		0
Financing Receivable, Revolving		0
Total loans		0
Definite Loss [Member] | Revolving converted to term [Member] | Commercial And Industrial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving		0
Definite Loss [Member] | Revolving converted to term [Member] | Commercial Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving		0
Definite Loss [Member] | Revolving converted to term [Member] | Construction Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving		0
Definite Loss [Member] | Revolving converted to term [Member] | Small Business [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving		0
Default [Member] | Residential Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year		0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year		0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year		427
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year		0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year		4,158
Financing Receivable, Originated, More than Five Years before Current Fiscal Year		4,038
Financing Receivable, Revolving		0
Total loans		8,623
Default [Member] | Home Equity Loan [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year		0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year		0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year		0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year		0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year		0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year		440
Financing Receivable, Revolving		1,837
Total loans		2,632
Default [Member] | Consumer Loan [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year		0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year		0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year		0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year		15
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year		0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year		111
Financing Receivable, Revolving		11
Total loans		137
Default [Member] | Revolving converted to term [Member] | Residential Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving		0
Default [Member] | Revolving converted to term [Member] | Home Equity Loan [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving		355
Default [Member] | Revolving converted to term [Member] | Consumer Loan [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving		$ 0

[1] Loans originated as part of the Paycheck Protection Program ("PPP") established by the CARES Act are reported as commercial and industrial under the 2020 vintage year and as"Pass" because these loans are 100% guaranteed by the U.S. Government. Funded PPP loans outstanding totaled $791.9 million at December 31, 2020.