XML 37 R23.htm IDEA: XBRL DOCUMENT v3.3.1.900
Debt Tables (Tables)
 12 Months Ended
Dec. 31, 2015
Debt Disclosure [Abstract]  
Schedule of Long-term Debt Instruments
The following table summarizes information about the equity and liability components of the Convertible Senior Notes (dollars in thousands). The fair values of the respective notes outstanding were measured based on quoted market prices.
 
December 31,
 
2015
 
2014
Principal amount of Convertible Senior Notes outstanding
$
172,500

 
$
172,500

Unamortized discount of liability component
(25,703
)
 
(30,403
)
Unamortized deferred issuance costs (1)
(3,500
)
 
(4,139
)
Net carrying amount of liability component
143,297

 
137,958

Less: current portion
—

 
—

Long-term debt
$
143,297

 
$
137,958

Carrying value of equity component, net of issuance costs
$
29,758

 
$
29,758

Fair value of outstanding Convertible Senior Notes (2)
$
170,120

 
$
190,613

Remaining amortization period of discount on the liability component
5 years

 
6 years