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Backlog (Unaudited)
12 Months Ended
Dec. 31, 2016
Backlog [Abstract]  
Backlog Disclosure [Text Block]
Note 18 – Backlog (Unaudited)
 
At December 31, 2016 and December 31, 2015, the Company's contractual Construction backlog, which represents the amount of revenue the Company expects to realize from work to be performed on uncompleted construction contracts in progress, was $390.2 million and $355.4 million, respectively. In addition, Service backlog as of December 31, 2016 and December 31, 2015 was $44.1 million and $22.7 million, respectively.