Loans - Restructured in Troubled Debt (Details) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2019 USD ($) loan	Sep. 30, 2019 USD ($) loan	Sep. 30, 2018 USD ($) loan	Dec. 31, 2018 USD ($) loan
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loans at a point in time \| loan	23	23		25
Loan Balance	$ 10,199	$ 10,199		$ 14,626
Specific Reserve	$ 574	$ 574		$ 4,554
Number of loans, period of time \| loan	1	1	4
Pre-Modification Outstanding Recorded Investment	$ 383		$ 1,091
Post-Modification Outstanding Recorded Investment	$ 383		$ 1,091
Commercial, industrial, and agricultural
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loans at a point in time \| loan	10	10		10
Loan Balance	$ 3,197	$ 3,197		$ 4,577
Specific Reserve	$ 38	$ 38		$ 104
Number of loans, period of time \| loan	0		0
Pre-Modification Outstanding Recorded Investment	$ 0		$ 0
Post-Modification Outstanding Recorded Investment	$ 0		$ 0
Commercial mortgages
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loans at a point in time \| loan	13	13		15
Loan Balance	$ 7,002	$ 7,002		$ 10,049
Specific Reserve	$ 536	$ 536		$ 4,450
Number of loans, period of time \| loan	1		4
Pre-Modification Outstanding Recorded Investment	$ 383		$ 1,091
Post-Modification Outstanding Recorded Investment	$ 383		$ 1,091
Residential real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loans at a point in time \| loan	0	0		0
Loan Balance	$ 0	$ 0		$ 0
Specific Reserve	$ 0	$ 0		$ 0
Number of loans, period of time \| loan	0		0
Pre-Modification Outstanding Recorded Investment	$ 0		$ 0
Post-Modification Outstanding Recorded Investment	$ 0		$ 0
Consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loans at a point in time \| loan	0	0		0
Loan Balance	$ 0	$ 0		$ 0
Specific Reserve	$ 0	$ 0		$ 0
Number of loans, period of time \| loan	0		0
Pre-Modification Outstanding Recorded Investment	$ 0		$ 0
Post-Modification Outstanding Recorded Investment	$ 0		$ 0
Credit cards
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loans at a point in time \| loan	0	0		0
Loan Balance	$ 0	$ 0		$ 0
Specific Reserve	$ 0	$ 0		$ 0
Number of loans, period of time \| loan	0		0
Pre-Modification Outstanding Recorded Investment	$ 0		$ 0
Post-Modification Outstanding Recorded Investment	$ 0		$ 0

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Financing receivable modifications specific reserve.

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Amount of financing receivable modified as troubled debt restructuring.

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-Publisher FASB
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