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Borrowings (Tables)
 3 Months Ended
Mar. 31, 2013
Borrowings [Abstract]  
Principal Amounts And Related Unamortized Discount On Convertible Notes

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

   (in thousands)

 

2013

 

 

2012

 

Principal amount of convertible notes

 

$
48,340

 

 

$
90,960

 

Unamortized discount on convertible notes

 

 
(5,250

)

 

 
(10,429

)

Net carrying value

 

$
43,090

 

 

$
80,531