XML 35 R24.htm IDEA: XBRL DOCUMENT v3.7.0.1
Convertible Senior Notes (Tables)
6 Months Ended
Jun. 30, 2017
Convertible Senior Notes
Convertible senior notes consist of the following (in thousands):

   
June 30, 2017
   
December 31, 2016
 
   
Principal
Amount
   
Debt
Issuance
Costs
   
Net
Amount
   
Principal
Amount
   
Debt
Issuance
Costs
   
Net
Amount
 
4.25% convertible senior notes (due 2018)
 
$
42,728
   
$
387
   
$
42,341
   
$
93,865
   
$
1,098
   
$
92,767
 
4.875% convertible senior notes (due 2020)
   
113,000
     
2,366
     
110,634
     
113,000
     
2,760
     
110,240
 
Total
 
$
155,728
   
$
2,753
   
$
152,975
   
$
206,865
   
$
3,858
   
$
203,007