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DESCRIPTION OF ORGANIZATION AND BUSINESS OPERATIONS (Details Textual) (USD $)
1 Months Ended 3 Months Ended
Oct. 29, 2014
Mar. 31, 2015
Dec. 31, 2014
Organization Consolidation Basis Of Presentation Business Description And Accounting Policies [Line Items]      
Share Price $ 10.00us-gaap_SharePrice    
Proceeds from Issuance Initial Public Offering $ 80,000,000us-gaap_ProceedsFromIssuanceInitialPublicOffering    
Business Acquisition, Transaction Costs   5,223,296us-gaap_BusinessAcquisitionCostOfAcquiredEntityTransactionCosts  
Underwriting Fees   2,000,000hdrau_UnderwritingFees  
Other Liabilities, Noncurrent   2,800,000us-gaap_OtherLiabilitiesNoncurrent 2,800,000us-gaap_OtherLiabilitiesNoncurrent
Initial Public Offering costs   423,296hdrau_InitialPublicOfferingCosts  
Cash Available for Fund Operations   1,326,704hdrau_CashAvailableForFundOperations  
Minimum Fair Market Value Of Target Business As Percentage Of Assets Held In Trust   80.00%hdrau_MinimumFairMarketValueOfTargetBusinessAsPercentageOfAssetsHeldInTrust  
Minimum Value Of Net Tangible Assets Shares Redeemed   5,000,001hdrau_MinimumValueOfNetTangibleAssetsSharesRedeemed  
Liquidation Condition   If the Company is unable to complete a Business Combination within 24 months from the closing of the Initial Public Offering (the Combination Period), the Company will (i) cease all operations except for the purposes of winding up its affairs; (ii) distribute the aggregate amount then on deposit in the Trust Account, including a portion of the interest earned thereon (net of any taxes payable, and less up to $50,000 of interest to pay dissolution expenses), pro rata to the Companys public stockholders by way of redemption of the Companys public shares (which redemption would completely extinguish such holders rights as stockholders, including the right to receive further liquidation distributions, if any); and (iii) as promptly as possible following such redemption, dissolve and liquidate the balance of the Companys net assets to its remaining stockholders, as part of the Companys plan of dissolution and liquidation.  
Cash and Cash Equivalents, at Carrying Value   867,422us-gaap_CashAndCashEquivalentsAtCarryingValue 1,123,278us-gaap_CashAndCashEquivalentsAtCarryingValue
Lorne Weil, Inc [Member]      
Organization Consolidation Basis Of Presentation Business Description And Accounting Policies [Line Items]      
Share Price   $ 10.00us-gaap_SharePrice
/ dei_LegalEntityAxis
= hdrau_LorneWeilIncMember
 
Business Combination Contingent Consideration Liability Percentage   50.00%hdrau_BusinessCombinationContingentConsiderationLiabilityPercentage
/ dei_LegalEntityAxis
= hdrau_LorneWeilIncMember
 
Private Placement [Member]      
Organization Consolidation Basis Of Presentation Business Description And Accounting Policies [Line Items]      
Class of Warrant or Right, Outstanding   7,500,000us-gaap_ClassOfWarrantOrRightOutstanding
/ us-gaap_SubsidiarySaleOfStockAxis
= us-gaap_PrivatePlacementMember
 
Class of Warrant or Right, Exercise Price of Warrants or Rights   $ 0.50us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
/ us-gaap_SubsidiarySaleOfStockAxis
= us-gaap_PrivatePlacementMember
 
Proceeds from Issuance of Warrants   $ 3,750,000us-gaap_ProceedsFromIssuanceOfWarrants
/ us-gaap_SubsidiarySaleOfStockAxis
= us-gaap_PrivatePlacementMember
 
Public Offering [Member]      
Organization Consolidation Basis Of Presentation Business Description And Accounting Policies [Line Items]      
Stock Issued During Period, Shares, New Issues 8,000,000us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ us-gaap_SubsidiarySaleOfStockAxis
= hdrau_PublicOfferingMember