Annual report pursuant to Section 13 and 15(d)

LEEVAC Transaction - Narrative (Details)

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LEEVAC Transaction - Narrative (Details) - LEEVAC
Jan. 01, 2016
USD ($)
a
Customer
Project
Business Acquisition [Line Items]  
Purchase price $ 20,000,000
Net cash received at closing 3,000,000
Build construction backlog acquired 121,200,000
Build construction acquired, purchase price fair value allocated $ 9,200,000
Number of build construction projects in backlog acquired | Project 4
Third party customers with backlog acquired | Customer 2
Jennings  
Business Acquisition [Line Items]  
Area of leased facility (in acres) | a 180
Lake Charles  
Business Acquisition [Line Items]  
Area of leased facility (in acres) | a 10
Houma  
Business Acquisition [Line Items]  
Area of leased facility (in acres) | a 35