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FAIR VALUE MEASUREMENTS (Tables)
6 Months Ended
Jun. 30, 2018
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, 2018 and December 31, 2017 were as follows (in thousands):
 
 
 
June 30, 2018
 
 
December 31, 2017
 
 
 
Carrying
 
 
Fair Value
 
 
Carrying
 
 
Fair Value
 
 
 
Value
 
 
Level 1
 
 
Level 2
 
 
Level 3
 
 
Value
 
 
Level 1
 
 
Level 2
 
 
Level 3
 
Instrument
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Convertible senior notes due 2018
 
$
-
 
 
$
-
 
 
$
-
 
 
$
-
 
 
$
44,046
 
 
$
-
 
 
$
83,605
 
 
$
-
 
Senior notes due 2025
 
 
319,669
 
 
 
-
 
 
 
314,438
 
 
 
-
 
 
 
319,377
 
 
 
-
 
 
 
328,250
 
 
 
-
 
Term loan credit agreement
 
 
185,788
 
 
 
-
 
 
 
186,639
 
 
 
-
 
 
 
186,620
 
 
 
-
 
 
 
188,048
 
 
 
-
 
Other debt
 
 
-
 
 
 
-
 
 
 
-
 
 
 
-
 
 
 
67
 
 
 
-
 
 
 
-
 
 
 
67
 
Capital lease obligations
 
 
1,160
 
 
 
-
 
 
 
-
 
 
 
1,160
 
 
 
1,302
 
 
 
-
 
 
 
-
 
 
 
1,302
 
 
 
$
506,617
 
 
$
-
 
 
$
501,077
 
 
$
1,160
 
 
$
551,412
 
 
$
-
 
 
$
599,903
 
 
$
1,369