v3.8.0.1
HEALTH, SAFETY AND ENVIRONMENTAL MATTERS (Tables)
 12 Months Ended
Dec. 31, 2017
Environmental Remediation Obligations [Abstract]  
Schedule of Environmental Accrual Rollforward [Table Text Block]
The balance of and changes in the accruals for environmental matters were as follows:
 
Year Ended December 31,
 
2017
 
2016
 
(Thousands of Dollars)
Balance as of the beginning of year
$
5,120

 
$
7,667

Additions to accrual
3,186

 
870

Payments
(2,675
)
 
(3,302
)
Foreign currency translation
52

 
(115
)
Balance as of the end of year
$
5,683

 
$
5,120
Environmental Accruals By Balance Sheet Location [Table Text Block]
Accruals for environmental matters are included in the consolidated balance sheets as follows:
 
December 31,
 
2017
 
2016
 
(Thousands of Dollars)
Accrued liabilities
$
3,054

 
$
3,281

Other long-term liabilities
2,629

 
1,839

Accruals for environmental matters
$
5,683

 
$
5,120