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FAIR VALUE MEASUREMENTS (Tables)
 12 Months Ended
Dec. 31, 2014
Fair Value Disclosures [Abstract]  
Financial Assets and Liabilities Accounted For at Fair Value on Recurring Basis
The Company’s carrying and estimated fair value of debt, at December 31, 2014 and 2013 were as follows:
 
 
 
December 31, 2014
 
December 31, 2013
 
 
 
Carrying
 
Fair Value
 
Carrying
 
Fair Value
 
 
 
Value
 
Level 1
 
Level 2
 
Level 3
 
Value
 
Level 1
 
Level 2
 
Level 3
 
Instrument
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Convertible senior notes
 
$
134,601
 
$
-
 
$
188,490
 
$
-
 
$
130,628
 
$
-
 
$
197,718
 
$
-
 
Term loan credit agreement
 
 
189,027
 
 
-
 
 
192,845
 
 
-
 
 
229,388
 
 
-
 
 
236,684
 
 
-
 
Industrial revenue bond
 
 
1,645
 
 
-
 
 
-
 
 
1,645
 
 
2,119
 
 
-
 
 
-
 
 
2,119
 
Capital lease obligations
 
 
7,254
 
 
-
 
 
-
 
 
7,254
 
 
8,460
 
 
-
 
 
-
 
 
8,460
 
 
 
$
332,527
 
$
-
 
$
381,335
 
$
8,899
 
$
370,595
 
$
-
 
$
434,402
 
$
10,579