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FAIR VALUE MEASUREMENTS (Tables)
 3 Months Ended
Mar. 31, 2016
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 March 31, 2016 and December 31, 2015 were as follows:
 
 
 
March 31, 2016
 
December 31, 2015
 
 
 
Carrying
 
Fair Value
 
Carrying
 
Fair Value
 
 
 
Value
 
Level 1
 
Level 2
 
Level 3
 
Value
 
Level 1
 
Level 2
 
Level 3
 
Instrument
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Convertible senior notes
 
$
89,322
 
$
-
 
$
122,103
 
$
-
 
$
121,112
 
$
-
 
$
155,694
 
$
-
 
Term loan credit agreement
 
 
189,867
 
 
-
 
 
189,723
 
 
-
 
 
190,311
 
 
-
 
 
190,442
 
 
-
 
Industrial revenue bond
 
 
984
 
 
-
 
 
-
 
 
984
 
 
1,106
 
 
-
 
 
-
 
 
1,106
 
Capital lease obligations
 
 
2,424
 
 
-
 
 
-
 
 
2,424
 
 
2,648
 
 
-
 
 
-
 
 
2,648
 
 
 
$
282,597
 
$
-
 
$
311,826
 
$
3,408
 
$
315,177
 
$
-
 
$
346,136
 
$
3,754