Restrictions on Cash and Due From Banks (Details Textual) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Restrictions On Cash and Due From Banks [Line Items]
Reserve Balance With Federal Reserve Bank	$ 672,000	$ 724,000

It represents reserve balance is required to be maintained by bank with Federal Reserve bank.

No definition available.

Name:	csbq_ReserveBalanceWithFederalReserveBank
Namespace Prefix:	csbq_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant