Consolidated Statements of Cash Flows (unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Cash Flows From Operating Activities
Net income			$ 4,223	$ 3,159
Adjustments to reconcile net income to net cash provided by operating activities:
Amortization and accretion of premiums and discounts on investments, net			169	265
Net realized loss on sales and calls of securities			40	22
Provision for loan losses	$ 450	$ 525	2,010	1,575	$ 2,100
Loans originated for sale			(32,392)	(26,937)
Proceeds from sale of loans			30,807	29,146
Net gain on sale of loans			(367)	(435)
Amortization of intangible assets	10	11	32	32
Depreciation and amortization			969	866
Impairment loss on goodwill				95
Write-down of other real estate owned				387
Deferred income tax expense			(224)	(12)
Increase in cash surrender value of insurance	(100)	(101)	(300)	(300)
Increase in accrued interest receivable			(270)	(269)
Increase (decrease) in other assets			1,213	(788)
Increase in accrued expenses and other liabilities			1,258	7
Net cash provided by operating activities			7,168	6,813
Cash Flows from Investing Activities
Proceeds from sales and calls of securities			5,554	2,113
Proceeds from maturities and principal repayments of securities			11,952	11,881
Purchases of securities			(28,388)	(3,885)
Net purchases of FHLB Stock			(725)	(1,766)
Net increase in loans			(80,656)	(89,224)
Purchases of bank owned life insurance			(41)	(41)
Purchases of bank premises and equipment			(2,500)	(434)
Proceeds from sale of other real estate owned			180	108
Net cash used in investing activities			(94,624)	(81,248)
Cash Flows from Financing Activities
Net increase in demand deposits, NOW, money market and savings accounts			31,429	30,911
Net increase in time deposits			54,138	10,702
Decrease in mortgagors' escrow accounts			(4,032)	(3,763)
Net (decrease) increase in short-term debt			(13,954)	20,537
Net increase in long-term debt			25,292	18,184
Proceeds of stock subscriptions			9,814
Return of unfulfilled stock subscriptions			(41,082)
Loan to ESOP			(4,364)
Offering expenses			(1,898)
Return of capital to Rhinebeck Bancorp, MHC			(121)
Net cash provided by financing activities			55,222	76,571
Net (decrease) increase in cash and due from banks			(32,234)	2,136
Cash and Due from Banks
Beginning balance			50,590	10,460	10,460
Ending balance	$ 18,356	$ 12,596	18,356	12,596	$ 50,590
Cash paid for:
Interest			6,424	3,483
Income taxes			$ 1,040	$ 368