cm:Concept: us-gaap:EarningsPerShareSubsequentEvents
| Earnings Per Share, Subsequent Events |
| us-gaap:EarningsPerShareSubsequentEvents |
| For the latest period for which an income statement is presented, this element represents a description of any transaction that occurs after the end of the most recent period but before issuance of the financial statements that would have changed materially the number of common shares or potential common shares outstanding at the end of the period, if the transaction had occurred before the end of the period. Examples of those transactions include the issuance or acquisition of common shares (including stock splits and stock dividends); the issuance of warrants, options, or convertible securities; the resolution of a contingency pursuant to a contingent stock agreement; and the conversion or exercise of potential common shares outstanding at the end of the period into common shares. |
| cm:Concept |
| Text/String (xbrli:stringItemType) |
| For Period (duration) |
| (no balance type) |
| false |
| us-gaap:EarningsPerShareSubsequentEvents |