Regulatory Matters (Schedule of actual capital amounts and ratios) (Details) - Rhinebeck Bank $ in Thousands	Sep. 30, 2022 USD ($)	Dec. 31, 2021 USD ($)
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Total capital (to risk-weighted assets) Actual Amount	$ 138,827	$ 130,217
Total capital (to risk-weighted assets) Actual Ratio	0.1257	0.1354
Total capital (to risk-weighted assets) For Capital Adequacy Purposes Amount	$ 88,372	$ 76,917
Total capital (to risk-weighted assets) For Capital Adequacy Purposes Ratio	0.0800	0.0800
Total capital (to risk-weighted assets) To be Well Capitalized under Prompt Corrective Action Provisions Amount	$ 110,464	$ 96,146
Total capital (to risk-weighted assets) To be Well Capitalized under Prompt Corrective Action Provisions Ratio	0.1000	0.1000
Tier 1 capital (to risk-weighted assets) Actual Amount	$ 130,335	$ 122,658
Tier 1 capital (to risk-weighted assets) Actual Ratio	0.1180	0.1276
Tier 1 capital (to risk-weighted assets) For Capital Adequacy Purposes Amount	$ 66,279	$ 57,687
Tier 1 capital (to risk-weighted assets) For Capital Adequacy Purposes Ratio	0.0600	0.0600
Tier 1 capital (to risk-weighted assets) To be Well Capitalized under Prompt Corrective Action Provisions Amount	$ 88,372	$ 76,917
Tier 1 capital (to risk-weighted assets) To be Well Capitalized under Prompt Corrective Action Provisions Ratio	0.0800	0.0800
Common equity tier one capital (to risk weighted assets) Actual Amount	$ 130,335	$ 122,658
Common equity tier one capital (to risk weighted assets) Actual Ratio	0.1180	0.1276
Common equity tier one capital (to risk weighted assets) For Capital Adequacy Purposes Amount	$ 49,709	$ 43,266
Common equity tier one capital (to risk weighted assets) For Capital Adequacy Purposes Ratio	0.0450	0.0450
Common equity tier one capital (to risk weighted assets) To be Well Capitalized under Prompt Corrective Action Provisions Amount	$ 71,802	$ 62,495
Common equity tier one capital (to risk weighted assets) To be Well Capitalized under Prompt Corrective Action Provisions Ratio	0.0650	0.0650
Tier 1 capital (to average assets) Actual Amount	$ 130,335	$ 122,658
Tier 1 capital (to average assets) Actual Ratio	0.0983	0.0965
Tier 1 capital (to average assets) For Capital Adequacy Purposes Amount	$ 53,058	$ 50,865
Tier 1 capital (to average assets) For Capital Adequacy Purposes Ratio	0.0400	0.0400
Tier 1 capital (to average assets) To be Well Capitalized under Prompt Corrective Action Provisions Amount	$ 66,322	$ 63,582
Tier 1 capital (to average assets) To be Well Capitalized under Prompt Corrective Action Provisions Ratio	0.0500	0.0500