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Loans and Allowance for Credit Losses - Schedule of Classes of the Loan Portfolio Summarized by the Aggregate Risk Rating (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	$ 196,645		$ 196,645
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	300,366		300,366
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	245,509		245,509
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	117,772		117,772
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	112,273		112,273
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	503,694		503,694
Financing Receivable, Revolving	139,707		139,707
Financing receivable, before allowance for credit loss	1,615,966	$ 1,527,128	1,615,966	$ 1,527,128	$ 1,538,610
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff			14
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff			68
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff			35
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff			45
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff			20
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff			174
Financing Receivable, Revolving, Writeoff			33
Financing Receivable, Allowance for Credit Loss, Writeoff	190	1,014	389	1,134
Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	195,680		195,680
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	293,722		293,722
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	243,083		243,083
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	113,301		113,301
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	105,807		105,807
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	477,197		477,197
Financing Receivable, Revolving	136,142		136,142
Financing receivable, before allowance for credit loss	1,564,932		1,564,932		1,489,259
Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	957		957
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	6,626		6,626
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	2,281		2,281
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	2,914		2,914
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	5,734		5,734
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	19,440		19,440
Financing Receivable, Revolving	3,256		3,256
Financing receivable, before allowance for credit loss	41,208		41,208		41,908
Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	8		8
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	18		18
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	145		145
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	1,557		1,557
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	732		732
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	7,057		7,057
Financing Receivable, Revolving	309		309
Financing receivable, before allowance for credit loss	9,826		9,826		7,443
Doubtful
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss					0
Performing Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	196,645		196,645
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	300,366		300,366
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	245,509		245,509
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	117,772		117,772
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	111,952		111,952
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	500,705		500,705
Financing Receivable, Revolving	139,423		139,423
Financing receivable, before allowance for credit loss	1,612,372		1,612,372		1,534,753
Nonperforming Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0		0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0		0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0		0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0		0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	321		321
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	2,989		2,989
Financing Receivable, Revolving	284		284
Financing receivable, before allowance for credit loss	3,594		3,594		3,857
Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	4,822		4,822
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	25,920		25,920
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	36,558		36,558
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	16,891		16,891
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	14,574		14,574
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	25,392		25,392
Financing Receivable, Revolving	29,870		29,870
Financing receivable, before allowance for credit loss	154,027	176,692	154,027	176,692	178,762
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff			0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff			0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff			0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff			0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff			0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff			110
Financing Receivable, Revolving, Writeoff			0
Financing Receivable, Allowance for Credit Loss, Writeoff	81	70	110	167
Commercial and industrial | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	4,701		4,701
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	25,535		25,535
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	36,090		36,090
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	16,390		16,390
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	14,406		14,406
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	24,086		24,086
Financing Receivable, Revolving	28,544		28,544
Financing receivable, before allowance for credit loss	149,752		149,752		173,437
Commercial and industrial | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	113		113
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	367		367
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	323		323
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	484		484
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	157		157
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	558		558
Financing Receivable, Revolving	1,042		1,042
Financing receivable, before allowance for credit loss	3,044		3,044		4,035
Commercial and industrial | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	8		8
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	18		18
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	145		145
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	17		17
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	11		11
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	748		748
Financing Receivable, Revolving	284		284
Financing receivable, before allowance for credit loss	1,231		1,231		1,290
Commercial and industrial | Doubtful
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss					0
Commercial and industrial | Performing Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	4,822		4,822
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	25,920		25,920
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	36,558		36,558
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	16,891		16,891
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	14,574		14,574
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	25,206		25,206
Financing Receivable, Revolving	29,586		29,586
Financing receivable, before allowance for credit loss	153,557		153,557		177,981
Commercial and industrial | Nonperforming Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0		0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0		0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0		0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0		0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0		0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	186		186
Financing Receivable, Revolving	284		284
Financing receivable, before allowance for credit loss	470		470		781
Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	114,084		114,084
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	150,850		150,850
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	144,563		144,563
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	66,947		66,947
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	76,137		76,137
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	322,371		322,371
Financing Receivable, Revolving	17,413		17,413
Financing receivable, before allowance for credit loss	892,365	823,827	892,365	823,827	821,805
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff			0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff			0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff			0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff			0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff			0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff			0
Financing Receivable, Revolving, Writeoff			0
Financing Receivable, Allowance for Credit Loss, Writeoff	0	831	0	831
Commercial real estate | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	113,782		113,782
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	145,145		145,145
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	143,203		143,203
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	63,474		63,474
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	70,536		70,536
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	302,565		302,565
Financing Receivable, Revolving	16,004		16,004
Financing receivable, before allowance for credit loss	854,709		854,709		786,711
Commercial real estate | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	302		302
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	5,705		5,705
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	1,360		1,360
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	1,933		1,933
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	4,880		4,880
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	15,023		15,023
Financing Receivable, Revolving	1,409		1,409
Financing receivable, before allowance for credit loss	30,612		30,612		29,540
Commercial real estate | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0		0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0		0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0		0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	1,540		1,540
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	721		721
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	4,783		4,783
Financing Receivable, Revolving	0		0
Financing receivable, before allowance for credit loss	7,044		7,044		5,554
Commercial real estate | Doubtful
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss					0
Commercial real estate | Performing Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	114,084		114,084
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	150,850		150,850
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	144,563		144,563
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	66,947		66,947
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	75,816		75,816
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	321,004		321,004
Financing Receivable, Revolving	17,413		17,413
Financing receivable, before allowance for credit loss	890,677		890,677		819,932
Commercial real estate | Nonperforming Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0		0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0		0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0		0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0		0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	321		321
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	1,367		1,367
Financing Receivable, Revolving	0		0
Financing receivable, before allowance for credit loss	1,688		1,688		1,873
Commercial real estate construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	19,757		19,757
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	46,857		46,857
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	6,392		6,392
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	1,020		1,020
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	338		338
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	4,423		4,423
Financing Receivable, Revolving	7,721		7,721
Financing receivable, before allowance for credit loss	86,508	66,189	86,508	66,189	80,470
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff			0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff			0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff			0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff			0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff			0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff			0
Financing Receivable, Revolving, Writeoff			0
Financing Receivable, Allowance for Credit Loss, Writeoff	0	0	0	0
Commercial real estate construction | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	19,757		19,757
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	46,386		46,386
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	6,392		6,392
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	927		927
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	338		338
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	3,612		3,612
Financing Receivable, Revolving	7,721		7,721
Financing receivable, before allowance for credit loss	85,133		85,133		78,652
Commercial real estate construction | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0		0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	471		471
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0		0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	93		93
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0		0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	741		741
Financing Receivable, Revolving	0		0
Financing receivable, before allowance for credit loss	1,305		1,305		1,818
Commercial real estate construction | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0		0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0		0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0		0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0		0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0		0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	70		70
Financing Receivable, Revolving	0		0
Financing receivable, before allowance for credit loss	70		70		0
Commercial real estate construction | Doubtful
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss					0
Commercial real estate construction | Performing Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	19,757		19,757
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	46,857		46,857
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	6,392		6,392
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	1,020		1,020
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	338		338
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	4,423		4,423
Financing Receivable, Revolving	7,721		7,721
Financing receivable, before allowance for credit loss	86,508		86,508		80,470
Commercial real estate construction | Nonperforming Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0		0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0		0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0		0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0		0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0		0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0		0
Financing Receivable, Revolving	0		0
Financing receivable, before allowance for credit loss	0		0		0
Residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	54,695		54,695
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	73,839		73,839
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	57,124		57,124
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	32,319		32,319
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	20,817		20,817
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	144,962		144,962
Financing Receivable, Revolving	548		548
Financing receivable, before allowance for credit loss	384,304	360,661	384,304	360,661	362,098
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff			0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff			0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff			0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff			0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff			0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff			0
Financing Receivable, Revolving, Writeoff			0
Financing Receivable, Allowance for Credit Loss, Writeoff	0	0	0	3
Residential mortgage | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	54,153		54,153
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	73,756		73,756
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	56,526		56,526
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	31,915		31,915
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	20,120		20,120
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	140,911		140,911
Financing Receivable, Revolving	486		486
Financing receivable, before allowance for credit loss	377,867		377,867		356,081
Residential mortgage | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	542		542
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	83		83
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	598		598
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	404		404
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	697		697
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	3,083		3,083
Financing Receivable, Revolving	62		62
Financing receivable, before allowance for credit loss	5,469		5,469		5,803
Residential mortgage | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0		0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0		0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0		0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0		0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0		0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	968		968
Financing Receivable, Revolving	0		0
Financing receivable, before allowance for credit loss	968		968		214
Residential mortgage | Doubtful
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss					0
Residential mortgage | Performing Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	54,695		54,695
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	73,839		73,839
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	57,124		57,124
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	32,319		32,319
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	20,817		20,817
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	143,962		143,962
Financing Receivable, Revolving	548		548
Financing receivable, before allowance for credit loss	383,304		383,304		361,393
Residential mortgage | Nonperforming Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0		0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0		0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0		0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0		0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0		0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	1,000		1,000
Financing Receivable, Revolving	0		0
Financing receivable, before allowance for credit loss	1,000		1,000		705
Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	953		953
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	39		39
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0		0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0		0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	97		97
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	5,298		5,298
Financing Receivable, Revolving	82,300		82,300
Financing receivable, before allowance for credit loss	88,687	87,555	88,687	87,555	84,141
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff			0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff			0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff			0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff			0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff			0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff			0
Financing Receivable, Revolving, Writeoff			0
Financing Receivable, Allowance for Credit Loss, Writeoff	0	33	0	33
Home equity lines of credit | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	953		953
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	39		39
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0		0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0		0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	97		97
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	4,775		4,775
Financing Receivable, Revolving	81,557		81,557
Financing receivable, before allowance for credit loss	87,421		87,421		83,044
Home equity lines of credit | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0		0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0		0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0		0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0		0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0		0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	35		35
Financing Receivable, Revolving	743		743
Financing receivable, before allowance for credit loss	778		778		712
Home equity lines of credit | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0		0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0		0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0		0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0		0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0		0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	488		488
Financing Receivable, Revolving	0		0
Financing receivable, before allowance for credit loss	488		488		385
Home equity lines of credit | Doubtful
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss					0
Home equity lines of credit | Performing Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	953		953
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	39		39
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0		0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0		0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	97		97
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	4,888		4,888
Financing Receivable, Revolving	82,300		82,300
Financing receivable, before allowance for credit loss	88,277		88,277		83,643
Home equity lines of credit | Nonperforming Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0		0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0		0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0		0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0		0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0		0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	410		410
Financing Receivable, Revolving	0		0
Financing receivable, before allowance for credit loss	410		410		498
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	2,334		2,334
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	2,861		2,861
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	872		872
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	595		595
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	310		310
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	1,248		1,248
Financing Receivable, Revolving	1,855		1,855
Financing receivable, before allowance for credit loss	10,075	12,204	10,075	12,204	11,334
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff			14
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff			68
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff			35
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff			45
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff			20
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff			64
Financing Receivable, Revolving, Writeoff			33
Financing Receivable, Allowance for Credit Loss, Writeoff	109	$ 80	279	$ 100
Consumer | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	2,334		2,334
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	2,861		2,861
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	872		872
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	595		595
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	310		310
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	1,248		1,248
Financing Receivable, Revolving	1,830		1,830
Financing receivable, before allowance for credit loss	10,050		10,050		11,334
Consumer | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0		0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0		0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0		0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0		0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0		0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0		0
Financing Receivable, Revolving	0		0
Financing receivable, before allowance for credit loss	0		0		0
Consumer | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0		0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0		0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0		0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0		0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0		0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0		0
Financing Receivable, Revolving	25		25
Financing receivable, before allowance for credit loss	25		25		0
Consumer | Doubtful
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, before allowance for credit loss					0
Consumer | Performing Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	2,334		2,334
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	2,861		2,861
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	872		872
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	595		595
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	310		310
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	1,222		1,222
Financing Receivable, Revolving	1,855		1,855
Financing receivable, before allowance for credit loss	10,049		10,049		11,334
Consumer | Nonperforming Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0		0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0		0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0		0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0		0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0		0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	26		26
Financing Receivable, Revolving	0		0
Financing receivable, before allowance for credit loss	$ 26		$ 26		$ 0

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