Annual report pursuant to Section 13 and 15(d)

Discontinued Operations - Schedule of Current and Long Term Accrued Environmental Liability (Details)

v3.8.0.1
Discontinued Operations - Schedule of Current and Long Term Accrued Environmental Liability (Details)
$ in Thousands
Dec. 31, 2017
USD ($)
Current Accrual $ 632
Long-term Accrual 239
Total 871
PFD [Member]  
Current Accrual 25
Long-term Accrual 60
Total 85
PFM [Member]  
Current Accrual
Long-term Accrual 15
Total 15
PFSG [Member]  
Current Accrual 607
Long-term Accrual 164
Total $ 771