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Investments Held in Trust Account (Details) (USD $)
 3 Months Ended 15 Months Ended
Mar. 31, 2015
Mar. 31, 2015
Investments held in trust account    
Amount placed in trust account $ 220,500,000blvdu_AmountPlacedInTrustAccount $ 220,500,000blvdu_AmountPlacedInTrustAccount
United States Treasury Securities    
Investments held in trust account    
Investment securities in trust account $ 220,500,000us-gaap_HeldToMaturitySecuritiesFairValue
/ us-gaap_DebtSecurityAxis
= us-gaap_USTreasurySecuritiesMember		 $ 220,500,000us-gaap_HeldToMaturitySecuritiesFairValue
/ us-gaap_DebtSecurityAxis
= us-gaap_USTreasurySecuritiesMember
United States Treasury Securities | Maximum    
Investments held in trust account    
Maturity period   180 days