cm:Level2TextBlock: us-gaap:InvestmentBankingFeesPolicy
| Investment Banking Fees, Policy [Policy Text Block] |
| us-gaap:InvestmentBankingFeesPolicy |
| Disclosure of accounting policy for recognition of revenue for securities underwriting, acting as agent, services in merger acquisition and financial advisory services. Revenues would include gains, losses and fees, net of syndicate expenses arising from securities offerings. |
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| us-gaap:InvestmentBankingFeesPolicy |