Quarterly report pursuant to Section 13 or 15(d)

Business Combination (Details Textual)

v3.7.0.1
Business Combination (Details Textual) - USD ($)
$ / shares in Units, $ in Millions
1 Months Ended
Jul. 20, 2016
Jun. 30, 2017
Business Acquisition [Line Items]    
Class of Warrant or Right, Exercise Price of Warrants or Rights   $ 15.00
Merger Warrants [Member]    
Business Acquisition [Line Items]    
Class of Warrant or Right, Exercise Price of Warrants or Rights   12.50
Additional Merger Warrants [Member]    
Business Acquisition [Line Items]    
Class of Warrant or Right, Exercise Price of Warrants or Rights   $ 11.50
Limbach [Member]    
Business Acquisition [Line Items]    
Payments to Acquire Businesses, Gross $ 32.4  
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares 2,200,005  
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned $ 17.5  
Limbach [Member] | Merger Warrants [Member]    
Business Acquisition [Line Items]    
Class of Warrant or Right, Exercise Price of Warrants or Rights $ 12.50  
Business Acquisition, Number Of Warrants Issued 666,670  
Business Acquisition, Value Of Warrants Issued $ 0.5  
Limbach [Member] | Additional Merger Warrants [Member]    
Business Acquisition [Line Items]    
Class of Warrant or Right, Exercise Price of Warrants or Rights $ 11.50  
Business Acquisition, Number Of Warrants Issued 1,000,006  
Business Acquisition, Value Of Warrants Issued $ 0.6  
Limbach [Member] | Predecessor [Member]    
Business Acquisition [Line Items]    
Additional Cash Paid For Consideration 0.6  
Additional Share Based Compensation 0.6  
Payments to Acquire Businesses, Gross $ 33.0