XML 131 R116.htm IDEA: XBRL DOCUMENT v3.7.0.1
Employee Retirement Plans - DBM Global (Details)
$ in Thousands
 1 Months Ended 12 Months Ended
Sep. 30, 2015
USD ($)
Dec. 31, 2016
USD ($)
$ / h
Dec. 31, 2015
USD ($)
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Defined benefit pension plan contribution made by employer   $ 8 $ 32
Defined benefit, matching contribution amount   100 100
United States Postretirement Benefit Plan of US Entity      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Defined benefit pension plan contribution made by employer   $ 100 200
Profit share contributions, probationary period   640 hours  
Discretionary matching contributions vested percentage   100.00%  
Discretionary matching contributions vested period   3 years  
Profit share contributions rate for each hour | $ / h   0.55  
Schuff      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Defined benefit, matching contribution amount   $ 1,100 1,100
Schuff | Other Pension Plan      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Pension withdrawal liability     2,400
Defined benefit pension plan contribution made by employer $ 200    
Schuff | United States Pension Plan of US Entity      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Defined benefit pension plan contribution made by employer   $ 6,900 $ 6,100
Schuff | Maximum | United States Pension Plan of US Entity      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Percentage of employees covered under plan   5.00%