Restricted Investment In Bank Stocks (Narrative) (Details)	Mar. 31, 2013
Restricted Investment In Bank Stocks [Abstract]
Maximum percent of a member's total capital stock outstanding that can be repurchased	5.00%

Maximum Percent Of Members Total Capital Stock Outstanding Available For Repurchase

No definition available.

Name:	cvly_MaximumPercentOfMembersTotalCapitalStockOutstandingAvailableForRepurchase
Namespace Prefix:	cvly_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant