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Loans, Troubled Debt Restructurings Segregated by Class (Details) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2020 USD ($) Loan	Jun. 30, 2019 USD ($) Loan	Jun. 30, 2020 USD ($) Loan	Jun. 30, 2019 USD ($) Loan	Dec. 31, 2019 USD ($) Loan
Troubled Debt Restructurings Segregated by Class [Abstract]
Number of Loans | Loan	11	10	34	23	35
Pre-Modification Outstanding Recorded Investment	$ 3,619		$ 11,213
Post-Modification Outstanding Balance	3,606	$ 4,104	11,128	$ 7,299	$ 9,076
Commitment to extend additional credit on loans modified in TDRs	$ 83		$ 83		82
Defaulted restructured loans, number of loans | Loan	2		4
Defaulted restructured loans, recorded balance	$ 162		$ 435
Term Modification [Member]
Troubled Debt Restructurings Segregated by Class [Abstract]
Pre-Modification Outstanding Recorded Investment	1,275		8,869
Post-Modification Outstanding Balance	1,262	3,824	8,784	6,237	8,133
Rate Modification [Member]
Troubled Debt Restructurings Segregated by Class [Abstract]
Post-Modification Outstanding Balance		0		0	0
Combination [Member]
Troubled Debt Restructurings Segregated by Class [Abstract]
Pre-Modification Outstanding Recorded Investment	2,344		2,344
Post-Modification Outstanding Balance	$ 2,344	$ 280	$ 2,344	$ 1,062	$ 943
Commercial [Member]
Troubled Debt Restructurings Segregated by Class [Abstract]
Number of Loans | Loan	10		32
Pre-Modification Outstanding Recorded Investment	$ 3,074		$ 10,280
Post-Modification Outstanding Balance	3,073		10,207
Commercial [Member] | Term Modification [Member]
Troubled Debt Restructurings Segregated by Class [Abstract]
Pre-Modification Outstanding Recorded Investment	730		7,936
Post-Modification Outstanding Balance	729		7,863
Commercial [Member] | Combination [Member]
Troubled Debt Restructurings Segregated by Class [Abstract]
Pre-Modification Outstanding Recorded Investment	2,344		2,344
Post-Modification Outstanding Balance	$ 2,344		$ 2,344
Commercial [Member] | Commercial Real Estate Residential [Member]
Troubled Debt Restructurings Segregated by Class [Abstract]
Number of Loans | Loan	3		11
Pre-Modification Outstanding Recorded Investment	$ 2,005		$ 6,402
Post-Modification Outstanding Balance	$ 2,005		$ 6,404
Defaulted restructured loans, number of loans | Loan	1		1
Defaulted restructured loans, recorded balance	$ 67		$ 67
Commercial [Member] | Commercial Real Estate Residential [Member] | Term Modification [Member]
Troubled Debt Restructurings Segregated by Class [Abstract]
Pre-Modification Outstanding Recorded Investment	196		4,593
Post-Modification Outstanding Balance	196		4,595
Commercial [Member] | Commercial Real Estate Residential [Member] | Combination [Member]
Troubled Debt Restructurings Segregated by Class [Abstract]
Pre-Modification Outstanding Recorded Investment	1,809		1,809
Post-Modification Outstanding Balance	$ 1,809		$ 1,809
Commercial [Member] | Commercial Real Estate Nonresidential [Member]
Troubled Debt Restructurings Segregated by Class [Abstract]
Number of Loans | Loan	3		12
Pre-Modification Outstanding Recorded Investment	$ 929		$ 3,274
Post-Modification Outstanding Balance	929		3,265
Commercial [Member] | Commercial Real Estate Nonresidential [Member] | Term Modification [Member]
Troubled Debt Restructurings Segregated by Class [Abstract]
Pre-Modification Outstanding Recorded Investment	419		2,764
Post-Modification Outstanding Balance	419		2,755
Commercial [Member] | Commercial Real Estate Nonresidential [Member] | Combination [Member]
Troubled Debt Restructurings Segregated by Class [Abstract]
Pre-Modification Outstanding Recorded Investment	510		510
Post-Modification Outstanding Balance	$ 510		$ 510
Commercial [Member] | Commercial Other [Member]
Troubled Debt Restructurings Segregated by Class [Abstract]
Number of Loans | Loan	4	4	9	11	17
Pre-Modification Outstanding Recorded Investment	$ 140		$ 604
Post-Modification Outstanding Balance	$ 139	$ 138	$ 538	$ 1,400	$ 1,829
Defaulted restructured loans, number of loans | Loan	1		3
Defaulted restructured loans, recorded balance	$ 95		$ 368
Commercial [Member] | Commercial Other [Member] | Term Modification [Member]
Troubled Debt Restructurings Segregated by Class [Abstract]
Pre-Modification Outstanding Recorded Investment	115		579
Post-Modification Outstanding Balance	114	138	513	1,260	1,565
Commercial [Member] | Commercial Other [Member] | Rate Modification [Member]
Troubled Debt Restructurings Segregated by Class [Abstract]
Post-Modification Outstanding Balance		0		0	0
Commercial [Member] | Commercial Other [Member] | Combination [Member]
Troubled Debt Restructurings Segregated by Class [Abstract]
Pre-Modification Outstanding Recorded Investment	25		25
Post-Modification Outstanding Balance	$ 25	$ 0	$ 25	$ 140	$ 264
Commercial [Member] | Real Estate Mortgage [Member]
Troubled Debt Restructurings Segregated by Class [Abstract]
Number of Loans | Loan		5		10	17
Post-Modification Outstanding Balance		$ 3,723		$ 5,193	$ 6,784
Commercial [Member] | Real Estate Mortgage [Member] | Term Modification [Member]
Troubled Debt Restructurings Segregated by Class [Abstract]
Post-Modification Outstanding Balance		3,686		4,514	6,105
Commercial [Member] | Real Estate Mortgage [Member] | Rate Modification [Member]
Troubled Debt Restructurings Segregated by Class [Abstract]
Post-Modification Outstanding Balance		0		0	0
Commercial [Member] | Real Estate Mortgage [Member] | Combination [Member]
Troubled Debt Restructurings Segregated by Class [Abstract]
Post-Modification Outstanding Balance		$ 37		$ 679	$ 679
Residential [Member]
Troubled Debt Restructurings Segregated by Class [Abstract]
Number of Loans | Loan	1		2
Pre-Modification Outstanding Recorded Investment	$ 545		$ 933
Post-Modification Outstanding Balance	533		921
Residential [Member] | Term Modification [Member]
Troubled Debt Restructurings Segregated by Class [Abstract]
Pre-Modification Outstanding Recorded Investment	545		933
Post-Modification Outstanding Balance	533		921
Residential [Member] | Combination [Member]
Troubled Debt Restructurings Segregated by Class [Abstract]
Pre-Modification Outstanding Recorded Investment	0		0
Post-Modification Outstanding Balance	$ 0		$ 0
Residential [Member] | Real Estate Mortgage [Member]
Troubled Debt Restructurings Segregated by Class [Abstract]
Number of Loans | Loan	1	1	2	2	1
Pre-Modification Outstanding Recorded Investment	$ 545		$ 933
Post-Modification Outstanding Balance	533	$ 243	921	$ 706	$ 463
Residential [Member] | Real Estate Mortgage [Member] | Term Modification [Member]
Troubled Debt Restructurings Segregated by Class [Abstract]
Pre-Modification Outstanding Recorded Investment	545		933
Post-Modification Outstanding Balance	533	0	921	463	463
Residential [Member] | Real Estate Mortgage [Member] | Rate Modification [Member]
Troubled Debt Restructurings Segregated by Class [Abstract]
Post-Modification Outstanding Balance		0		0	0
Residential [Member] | Real Estate Mortgage [Member] | Combination [Member]
Troubled Debt Restructurings Segregated by Class [Abstract]
Pre-Modification Outstanding Recorded Investment	0		0
Post-Modification Outstanding Balance	$ 0	$ 243	$ 0	$ 243	$ 0

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