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Organization and Business Operations (Details) (USD $)
0 Months Ended 3 Months Ended 15 Months Ended
Mar. 13, 2014
Feb. 19, 2014
Mar. 31, 2015
Mar. 31, 2015
Organization and Business Operations        
Aggregate gross proceeds from public offering and private placement of warrants   $ 216,000,000blvdu_ProceedsFromIssuanceOfCommonStockAndWarrants    
Additional gross proceeds from underwriter's partial exercise of over-allotment option and purchase of additional warrants in private placement by sponsor 10,700,000blvdu_ProceedsFromPartialExerciseOfOverAllotmentOptionByUnderwriterAndAdditionalWarrantsIssuedInPrivatePlacementToSponsor      
Amount placed in trust account with Continental Stock Transfer & Trust Company acting as trustee (the "Trust Account")     220,500,000blvdu_AmountPlacedInTrustAccount 220,500,000blvdu_AmountPlacedInTrustAccount
Number of business days prior to consummation of initial business combination that balance in trust account may be used to redeem shares of stockholders     2 days  
Number of business days prior to commencement of tender offer that balance in trust account may be used to redeem shares of stockholders     2 days  
Minimum net tangible assets required to be maintained to redeem the shares of common stock included in units sold in public offering     5,000,001blvdu_MinimumNetTangibleAssetsRequiredToBeMaintainedToRedeemSharesOfCommonStockIncludedInUnitsSoldInPublicOffering 5,000,001blvdu_MinimumNetTangibleAssetsRequiredToBeMaintainedToRedeemSharesOfCommonStockIncludedInUnitsSoldInPublicOffering
Period from closing of public offering initial business combination required to be complete     21 months  
Alternative period, as applicable, from closing of public offering initial business combination required to be complete     24 months  
Maximum number of business days from the required period that the entity is allowed to complete business combinations that the entity must redeem public shares of common stock if business combination is not complete     10 days  
Maximum amount interest earned on funds held in the trust account required to keep in trust account to pay dissolution expenses     $ 100,000blvdu_BusinessCombinationMaximumAmountOfInterestEarnedRequiredToKeepInTrustAccountToPayDissolutionExpensesOnFailureToCompleteInitialBusinessCombination $ 100,000blvdu_BusinessCombinationMaximumAmountOfInterestEarnedRequiredToKeepInTrustAccountToPayDissolutionExpensesOnFailureToCompleteInitialBusinessCombination