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
Mar. 31, 2017
Dec. 31, 2016
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 $ 12.50
Additional Merger Warrants [Member]      
Business Acquisition [Line Items]      
Class of Warrant or Right, Exercise Price of Warrants or Rights   $ 11.50 $ 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