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Net Income (Loss) Per Common Share Attributable to CBI (Details Textual) - shares
3 Months Ended 6 Months Ended
Aug. 31, 2019
Aug. 31, 2019
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Antidilutive shares 3,304,955 3,367,943
Class B Convertible Common Stock [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Antidilutive shares 23,316,411 23,316,505