Juniata Valley Financial Corp. (Parent Company Only) Financial Information (Schedule of Condensed Statements of Cash Flows) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Net income	$ 6,604	$ 5,602
Net cash provided by operating activities	8,866	6,775
Proceeds from the maturity of available for sale investment securities	78,608	98,539
Net cash used in investing activities	(53,874)	(92,548)
Cash dividends	(4,402)	(4,465)
Purchase of treasury stock	(861)	(1,452)
Treasury stock issued for stock plans	77	70
Net cash provided by financing activities	16,913	114,654
Net decrease in cash and cash equivalents	(28,095)	28,881
Cash and cash equivalents at end of period	13,526	41,621
Cash and cash equivalents at beginning of year	41,621	12,740
Parent Company [Member]
Net income	6,604	5,602
Undistributed net (income) loss of subsidiary	(1,549)	48
Change in value of equity securities	(97)	12
Increase in other assets	39	(13)
Increase in other liabilities	11	13
Net cash provided by operating activities	5,008	5,662
Proceeds from the maturity of available for sale investment securities	118	250
Net cash used in investing activities	118	250
Cash dividends	(4,402)	(4,465)
Purchase of treasury stock	(861)	(1,452)
Treasury stock issued for stock plans	77	70
Net cash provided by financing activities	(5,186)	(5,847)
Net decrease in cash and cash equivalents	(60)	65
Cash and cash equivalents at end of period	85	145
Cash and cash equivalents at beginning of year	$ 145	$ 80