Concentrations (Details)	12 Months Ended
	Dec. 31, 2015 Service_Center
Concentration [Abstract]
Concentration Risk, Labor Subject to Collective Bargaining Arrangements	.42
Multiemployer Plans, Collective-Bargaining Arrangement, Description	three
Canadian
Concentration [Abstract]
Number of service centers	3
Petroleum Industry [Member]
Concentration [Abstract]
Approximate percentage of revenue	30.00%
Chemical Industry [Member]
Concentration [Abstract]
Approximate percentage of revenue	18.00%
Transportation Industry [Member]
Concentration [Abstract]
Approximate percentage of revenue	15.00%
Steel Industry [Member]
Concentration [Abstract]
Approximate percentage of revenue	9.00%
Food/Agriculture [Member]
Concentration [Abstract]
Approximate percentage of revenue	7.00%
Customer Concentration Risk [Member]
Concentration [Abstract]
Approximate percentage of revenue	10.00%
Workforce Subject to Collective Bargaining Arrangements Expiring within One Year [Member]
Concentration [Abstract]
Concentration Risk, Labor Subject to Collective Bargaining Arrangements	.22
ASC [Member]
Concentration [Abstract]
Concentration Risk, Labor Subject to Collective Bargaining Arrangements	twelve
GERMANY
Concentration [Abstract]
Concentration Risk, Labor Subject to Collective Bargaining Arrangements	one