v3.3.1.900
INTANGIBLE ASSETS AND OTHER LONG-TERM ASSETS (Tables)
 12 Months Ended
Dec. 31, 2015
Intangible asset and Other long-term assets [Abstract]  
Schedule of Finite-Lived Intangible Assets by Major Class [Table Text Block]
Intangible assets are recorded at cost and are amortized on a straight-line basis over 10 to 47 years. Intangible assets consisted of the following:
 
December 31, 2015
 
December 31, 2014
 
Cost
 
Accumulated
Amortization
 
Cost
 
Accumulated
Amortization
 
(Thousands of Dollars)
Customer relationships
$
196,616

 
$
(86,370
)
 
$
126,566

 
$
(69,711
)
Other
2,359

 
(594
)
 
2,359

 
(544
)
Total
$
198,975

 
$
(86,964
)
 
$
128,925

 
$
(70,255
)
Schedule of Other Long-Term Assets [Table Text Block]
Other long-term assets, net consisted of the following:
 
December 31,
 
2015
 
2014
 
(Thousands of Dollars)
Axeon Term Loan
$
170,352

 
$
169,235

Amount remaining in trust for the Gulf Opportunity Zone revenue bonds (Note 13)
54,822

 
72,240

Ammonia pipeline linefill and tank heel inventory
35,178

 
35,686

Deferred financing costs
29,939

 
32,957

Other
30,043

 
4,048

Other long-term assets, net
$
320,334

 
$
314,166