Goodwill and Other Intangible Assets (Narrative) (Details) - USD ($)				3 Months Ended		9 Months Ended
	Apr. 30, 2018	Nov. 30, 2015	Sep. 08, 2006	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Goodwill included in acquisition price				$ 9,047,000		$ 9,047,000		$ 9,047,000
Amortization of intangible assets				16,000	$ 19,000	49,000	$ 57,000
Other intangible assets				128,000		128,000		$ 158,000
Goodwill impairment loss				0	$ 0	0	$ 0
Branch Office in Richfield, PA [Member]
Acquisition date			Sep. 08, 2006
Goodwill included in acquisition price			$ 2,046,000
FNBPA Bancorp, Inc [Member]
Acquisition date		Nov. 30, 2015
Goodwill included in acquisition price		$ 3,402,000
Intangible assets included in purchase price		$ 303,000
Intangible assets amortization period		10 years
Amortization of intangible assets				6,000		20,000
Liverpool Community Bank [Member]
Acquisition date	Apr. 30, 2018
Goodwill included in acquisition price	$ 3,599,000
Intangible assets included in purchase price	$ 289,000
Intangible assets amortization period	10 years
Amortization of intangible assets				$ 10,000		$ 29,000