Annual report pursuant to Section 13 and 15(d)

Business Combination (Details 5)

v3.7.0.1
Business Combination (Details 5) - Limbach [Member] - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Business Acquisition [Line Items]    
Pro forma revenues $ 446,994 $ 331,350
Pro forma net income (loss) attributable to common shareholders $ (568) $ (3,966)