Borrowings (Details Textual) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012
Borrowings (Textual) [Abstract]
Principal curtailment is due on the borrowings	10.00%
Additional Borrowing capacity	$ 41.1

Other borrowings portion of principal curtailment due on borrowing anniversary date.

No definition available.

Name:	csbb_OtherBorrowingsPortionOfPrincipalCurtailmentDueOnBorrowingAnniversaryDate
Namespace Prefix:	csbb_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant