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Convertible Senior Notes (Tables)
 6 Months Ended
Jun. 30, 2016
Debt Disclosure [Abstract]  
Components of consolidated balance sheets associated with convertible senior notes
The following summarizes (in thousands) components of our consolidated balance sheets associated with our convertible senior notes:
 
As of
 
June 30, 2016
 
December 31, 2015
Face amount of 5.875% convertible senior notes
88,780


93,280

Discount
(26,877
)

(28,497
)
Net carrying value
$
61,903


$
64,783

Carrying amount of equity component included in additional paid-in capital
$
108,714


$
108,714

Excess of instruments’ if-converted values over face principal amounts
$
—


$
—