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Proposed Business Combination (Details Textual) - USD ($)
$ / shares in Units, $ in Millions
 1 Months Ended 6 Months Ended
Jul. 11, 2016
Jul. 18, 2016
Jun. 30, 2016
Financial Instruments Subject to Mandatory Redemption, Settlement Terms, Maximum Amount     $ 42.9
Preferred Stock, Liquidation Preference Per Share     $ 25.00
Convertible Preferred Stock, Terms of Conversion     Each share of Preferred Stock will be convertible at the holders election at any time after issuance into 2.00 shares of the Companys common stock, par value $0.0001 per share, representing a conversion price of $12.50 per share.
Minimum Amount To Be Released From Trust Account     $ 18.0
Line of Credit Facility, Current Borrowing Capacity     65.0
Minimum Amount To Be Funded     $ 40.0
Subsequent Event [Member]      
Business Acquisition Warrants Issued Or Issuable Number Of Warrants Issued   1,000,000  
First Amendment [Member] | Subsequent Event [Member]      
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares 500,000    
Business Acquisition Warrants Issued Or Issuable Number Of Warrants Issued 1,000,000    
Second Amendment [Member] | Subsequent Event [Member]      
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares   200,000  
Cummulative Dividend Rate For One To Three Year [Member]      
Preferred Stock, Dividend Rate, Percentage     8.00%
Cummulative Dividend Rate For Four To Five Year [Member]      
Preferred Stock, Dividend Rate, Percentage     10.00%
Cummulative Dividend Rate For Six Year [Member]      
Preferred Stock, Dividend Rate, Percentage     12.00%
Minimum [Member] | Second Amendment [Member] | Subsequent Event [Member]      
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable   $ 20.0  
Maximum [Member] | Second Amendment [Member] | Subsequent Event [Member]      
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable   $ 18.0  
Limbach [Member]      
Business Acquisition, Percentage of Voting Interests Acquired     80.00%
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable     $ 55.0
Business Combination, Consideration Transferred, Description     (a) between $33 million and $45 million in cash (the Cash Consideration), (b) between 1.0 million and 2.2 million shares of the Companys common stock, par value $0.0001 per share (Merger Shares), and (c) up to 666,667 warrants to purchase one share of the Companys common stock at an exercise price of $12.50 (Merger Warrants).
Stock Issued During Period, Shares, Acquisitions     1,500,000
Limbach [Member] | Cash-out Optionholders [Member]      
Options to Purchase ship Interest, Description     (a) an amount of cash equal to the aggregate implied value of the membership interests underlying such options (assuming the full exercise of all outstanding Limbach options for cash), less the exercise price of such options, less $1,000, and (b) 100 Merger Shares, each with a nominal value of $10.00 per share.
Preferred Class A [Member]      
Financial Instruments Subject to Mandatory Redemption, Settlement Terms, Maximum Amount     $ 10.0