Regulatory Matters (Schedule Of Risk-Based Capital Ratios And Leverage Ratios) (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018
Loans and advances by PeoplesBank to affiliates threshold		10.00%
Common equity Tier 1, Actual, Amount		$ 187,312	$ 178,656
Common equity Tier 1, Minimum for Basel III Capital Adequacy, Amount	[1]	$ 105,359	$ 93,708
Common equity Tier 1, Actual, Ratio		12.45%	12.15%
Common equity Tier 1, Minimum for Basel III Capital Adequacy, Ratio	[1]	7.00%	6.375%
Tier 1 risk based, Actual, Amount		$ 197,312	$ 188,656
Tier 1 risk based, Minimum for Basel III Capital Adequacy, Amount	[1]	$ 127,936	$ 115,757
Tier 1 risk based, Actual, Ratio		13.11%	12.83%
Tier 1 risk based, Minimum for Basel III Capital Adequacy, Ratio	[1]	8.50%	7.875%
Total risk based, Actual, Amount		$ 216,154	$ 207,040
Total risk based, Minimum for Basel III Capital Adequacy, Amount	[1]	$ 158,039	$ 145,155
Total risk based, Actual, Ratio		14.36%	14.08%
Total risk based, Minimum for Basel III Capital Adequacy, Ratio	[1]	10.50%	9.875%
Leverage, Actual, Amount		$ 197,312	$ 188,656
Leverage, Minimum for Basel III Capital Adequacy, Amount	[1]	$ 74,820	$ 72,119
Leverage, Actual, Ratio		10.55%	10.46%
Leverage, Minimum for Basel III Capital Adequacy, Ratio	[1]	4.00%	4.00%
PeoplesBank, A Codorus Valley Company [Member]
Common equity Tier 1, Actual, Amount		$ 193,421	$ 184,420
Common equity Tier 1, Minimum for Basel III Capital Adequacy, Amount	[1]	105,118	93,466
Common equity Tier 1, Well Capitalized Minimum, Amount	[2]	$ 97,610	$ 95,298
Common equity Tier 1, Actual, Ratio		12.88%	12.58%
Common equity Tier 1, Minimum for Basel III Capital Adequacy, Ratio	[1]	7.00%	6.375%
Common equity Tier 1, Well Capitalized Minimum, Ratio	[2]	6.50%	6.50%
Tier 1 risk based, Actual, Amount		$ 193,421	$ 184,420
Tier 1 risk based, Minimum for Basel III Capital Adequacy, Amount	[1]	127,643	115,457
Tier 1 risk based, Well Capitalized Minimum, Amount	[2]	$ 120,135	$ 117,290
Tier 1 risk based, Actual, Ratio		12.88%	12.58%
Tier 1 risk based, Minimum for Basel III Capital Adequacy, Ratio	[1]	8.50%	7.875%
Tier 1 risk based, Well Capitalized Minimum, Ratio	[2]	8.00%	8.00%
Total risk based, Actual, Amount		$ 212,220	$ 202,757
Total risk based, Minimum for Basel III Capital Adequacy, Amount	[1]	157,677	144,780
Total risk based, Well Capitalized Minimum, Amount	[2]	$ 150,169	$ 146,613
Total risk based, Actual, Ratio		14.13%	13.83%
Total risk based, Minimum for Basel III Capital Adequacy, Ratio	[1]	10.50%	9.875%
Total risk based, Well Capitalized Minimum, Ratio	[2]	10.00%	10.00%
Leverage, Actual, Amount		$ 193,421	$ 184,420
Leverage, Minimum for Basel III Capital Adequacy, Amount	[1]	74,673	71,968
Leverage, Well Capitalized Minimum, Amount	[2]	$ 93,341	$ 89,960
Leverage, Actual, Ratio		10.36%	10.25%
Leverage, Minimum for Basel III Capital Adequacy, Ratio	[1]	4.00%	4.00%
Leverage, Well Capitalized Minimum, Ratio	[2]	5.00%	5.00%

[1] Minimum Basel III capital adequacy requirements in order to avoid limitations on distributions, including dividend payments, and certain discretionary bonus payments to executive officers. Minimum amounts and ratios as of December 31, 2019 include the full phase in of the capital conservation buffer of 2.5 percent required by the Basel III framework. At December 31, 2018, the minimum amounts and ratios included the third year phase in of the capital conservation buffer of 1.875 percent required by the Basel III framework. The conservation buffer was phased in over a four year period beginning January 1, 2016, with the full 2.5 percent required as of January 1, 2019.

[2] To be "well capitalized" under the prompt corrective action provisions in the Basel III framework. "Well capitalized" applies to PeoplesBank only.