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Debt (Tables)
12 Months Ended
Dec. 31, 2016
Debt Disclosure [Abstract]  
Debt
Debt consists of:
 
At Year-End
 
2016
 
2015
 
(In thousands)
8.50% senior secured notes due 2022
5,200

 
224,647

3.75% convertible senior notes due 2020, net of discount
104,673

 
104,719

6.00% tangible equity units, net

 
8,666

Secured promissory notes — average interest rates of 3.42% at year-end 2015

 
15,400

Other indebtedness due through 2018 at variable and fixed interest rates ranging from 5.0% to 5.50%
485

 
28,083

 
$
110,358

 
$
381,515