cm:Level3TextBlock: us-gaap:RegistrationPaymentArrangementTextBlock
| Registration Payment Arrangement [Table Text Block] |
| us-gaap:RegistrationPaymentArrangementTextBlock |
| Tabular disclosure of contingent obligations arising from commitments made to the recipient of the entity's financial instruments to endeavor (a) to file a registration statement for the resale of those financial instruments (demand or "piggyback" rights granted to the recipient) or for the resale of equity shares that are issuable upon exercise or conversion of those financial instruments and (b) for the registration statement to be declared effective by the SEC within a specified grace period. This disclosure does not include information about the contingent obligation to make future payments or otherwise transfer consideration under a registration payment arrangement. |
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| us-gaap:RegistrationPaymentArrangementTextBlock |