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Condensed Statements of Operations (unaudited) (Parenthetical) (USD $)
 3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Statements of Operations [Abstract]    
Shares subject to forfeiture under condition one 1,250,000clacu_SharesSubjectToForfeitureUnderConditionOne 1,250,000clacu_SharesSubjectToForfeitureUnderConditionOne
Minimum sale price of share under condition one $ 13.00clacu_MinimumSalePriceOfShareUnderConditionOne $ 13.00clacu_MinimumSalePriceOfShareUnderConditionOne