Concentrations (Details)	12 Months Ended
	Dec. 31, 2020 union Service_Center
POLAND
Concentration [Abstract]
Number Of Unions | union	1
Canadian
Concentration [Abstract]
Number of service centers | Service_Center	3
Petroleum Industry [Member]
Concentration [Abstract]
Approximate percentage of revenue	28.00%
Chemical Industry [Member]
Concentration [Abstract]
Approximate percentage of revenue	22.00%
Transportation Industry [Member]
Concentration [Abstract]
Approximate percentage of revenue	21.00%
Mining [Member] [Member]
Concentration [Abstract]
Approximate percentage of revenue	10.00%
Food/Agriculture [Member]
Concentration [Abstract]
Approximate percentage of revenue	11.00%
Customer Concentration Risk [Member]
Concentration [Abstract]
Approximate percentage of revenue	10.00%
Workforce Subject to Collective Bargaining Arrangements [Member] | Unionized Employees Concentration Risk [Member]
Concentration [Abstract]
Approximate percentage of revenue	35.00%
Workforce Subject to Collective Bargaining Arrangements Expiring within One Year [Member] | Unionized Employees Concentration Risk [Member]
Concentration [Abstract]
Approximate percentage of revenue	2.00%