| Component: (Network and Table) | |
|---|---|
| Network | 41501 - Disclosure - Commitments and Contingencies (Schedule of Outstanding Commitments) (Details) (http://www.cmsbk.com/role/DisclosureCommitmentsAndContingenciesScheduleOfOutstandingCommitmentsDetails) |
| Table | Statement [Table] |
| Reporting Entity [Axis] | 0001350072 (http://www.sec.gov/CIK) |
| Statement [Line Items] | Period [Axis] | |||||||
|---|---|---|---|---|---|---|---|---|
2013-09-30 | 2012-09-30 | |||||||
| Financial Instrument [Axis] | Financial Instrument [Axis] | |||||||
| Loan Origination Commitments [Member] | Commitments Under Homeowners Equity Lending Program [Member] | Commitments To Extend Credit [Member] | Transfers And Servicing Of Financial Instruments Types Of Financial Instruments [Domain] | Loan Origination Commitments [Member] | Commitments Under Homeowners Equity Lending Program [Member] | Commitments To Extend Credit [Member] | Transfers And Servicing Of Financial Instruments Types Of Financial Instruments [Domain] | |
Other Commitment | 3,850,000 | 6,619,000 | 4,558,000 | 15,027,000 | 839,000 | 6,633,000 | 4,143,000 | 11,615,000 |