v2.4.0.8
ALLOWANCE FOR DOUBTFUL ACCOUNTS
 12 Months Ended
Dec. 31, 2013
ALLOWANCE FOR DOUBTFUL ACCOUNTS [Abstract]  
Allowance for Doubtful Accounts [Text Block]
ALLOWANCE FOR DOUBTFUL ACCOUNTS
The changes in the allowance for doubtful accounts consisted of the following:
 
Year Ended December 31,
 
2013
 
2012
 
2011
 
(Thousands of Dollars)
Balance as of beginning of year
$
808

 
$
2,147

 
$
1,457

Increase in allowance
1,039

 
27

 
934

Accounts charged against the allowance, net of recoveries
(625
)
 
(1,367
)
 
(243
)
Foreign currency translation
2

 
1

 
(1
)
Balance as of end of year
$
1,224

 
$
808

 
$
2,147