Regulatory Matters (Schedule Of Risk-Based Capital Ratios And Leverage Ratios) (Details) - USD ($) $ in Thousands		Sep. 30, 2018	Dec. 31, 2017
Common equity Tier 1, Actual, Amount		$ 175,204	$ 162,860
Common equity Tier 1, Minimum for Capital Adequacy, Amount	[1]	$ 94,493	$ 80,842
Common equity Tier 1, Actual, Ratio		11.82%	11.58%
Common equity Tier 1, Minimum for Capital Adequacy, Ratio	[1]	6.375%	5.75%
Tier 1 risk based, Actual, Amount		$ 185,204	$ 172,860
Tier 1 risk based, Minimum for Capital Adequacy, Amount	[1]	$ 116,726	$ 101,932
Tier 1 risk based, Actual, Ratio		12.49%	12.29%
Tier 1 risk based, Minimum for Capital Adequacy, Ratio	[1]	7.875%	7.25%
Total risk based, Actual, Amount		$ 203,438	$ 189,549
Total risk based, Minimum for Capital Adequacy, Amount	[1]	$ 146,371	$ 130,051
Total risk based, Actual, Ratio		13.73%	13.48%
Total risk based, Minimum for Capital Adequacy, Ratio	[1]	9.875%	9.25%
Leverage, Actual, Amount		$ 185,204	$ 172,860
Leverage, Minimum for Capital Adequacy, Amount	[1]	$ 71,335	$ 67,382
Leverage, Actual, Ratio		10.39%	10.26%
Leverage, Minimum for Capital Adequacy, Ratio	[1]	4.00%	4.00%
PeoplesBank, A Codorus Valley Company [Member]
Common equity Tier 1, Actual, Amount		$ 181,193	$ 168,879
Common equity Tier 1, Minimum for Capital Adequacy, Amount	[1]	94,260	80,630
Common equity Tier 1, Well Capitalized Minimum, Amount	[2]	$ 96,108	$ 91,147
Common equity Tier 1, Actual, Ratio		12.25%	12.04%
Common equity Tier 1, Minimum for Capital Adequacy, Ratio	[1]	6.375%	5.75%
Common equity Tier 1, Well Capitalized Minimum, Ratio	[2]	6.50%	6.50%
Tier 1 risk based, Actual, Amount		$ 181,193	$ 168,879
Tier 1 risk based, Minimum for Capital Adequacy, Amount	[1]	116,439	101,664
Tier 1 risk based, Well Capitalized Minimum, Amount	[2]	$ 118,287	$ 112,181
Tier 1 risk based, Actual, Ratio		12.25%	12.04%
Tier 1 risk based, Minimum for Capital Adequacy, Ratio	[1]	7.875%	7.25%
Tier 1 risk based, Well Capitalized Minimum, Ratio	[2]	8.00%	8.00%
Total risk based, Actual, Amount		$ 199,427	$ 185,568
Total risk based, Minimum for Capital Adequacy, Amount	[1]	146,011	129,709
Total risk based, Well Capitalized Minimum, Amount	[2]	$ 147,859	$ 140,226
Total risk based, Actual, Ratio		13.49%	13.23%
Total risk based, Minimum for Capital Adequacy, Ratio	[1]	9.875%	9.25%
Total risk based, Well Capitalized Minimum, Ratio	[2]	10.00%	10.00%
Leverage, Actual, Amount		$ 181,193	$ 168,879
Leverage, Minimum for Capital Adequacy, Amount	[1]	71,188	67,234
Leverage, Well Capitalized Minimum, Amount	[2]	$ 88,986	$ 84,043
Leverage, Actual, Ratio		10.18%	10.05%
Leverage, Minimum for Capital Adequacy, Ratio	[1]	4.00%	4.00%
Leverage, Well Capitalized Minimum, Ratio	[2]	5.00%	5.00%

[1] Minimum amounts and ratios as of September 30, 2018 include the third year phase in of the capital conservation buffer of 1.875 percent required by the Basel III framework. At December 31, 2017, the minimum amounts and ratios included the second year phase in of the capital conservation buffer of 1.25 percent required by the Basel III framework. The conservation buffer is to be 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.