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FAIR VALUE MEASUREMENTS (Tables)
6 Months Ended
Jun. 30, 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 June 30, 2014 and December 31, 2013 were as follows:
 
 
 
June 30, 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
 
$
132,580
 
$
-
 
$
210,468
 
$
-
 
$
130,628
 
$
-
 
$
197,718
 
$
-
 
Term loan credit agreement
 
 
208,895
 
 
-
 
 
214,071
 
 
-
 
 
229,388
 
 
-
 
 
236,684
 
 
-
 
Industrial revenue bond
 
 
1,884
 
 
-
 
 
-
 
 
1,884
 
 
2,119
 
 
-
 
 
-
 
 
2,119
 
Capital lease obligations
 
 
7,971
 
 
-
 
 
-
 
 
7,971
 
 
8,460
 
 
-
 
 
-
 
 
8,460
 
 
 
$
351,330
 
$
-
 
$
424,539
 
$
9,855
 
$
370,595
 
$
-
 
$
434,402
 
$
10,579