XML 56 R32.htm IDEA: XBRL DOCUMENT v3.8.0.1
Borrowings (Tables)
 12 Months Ended
Dec. 31, 2017
Debt Disclosure [Abstract]  
Summary of Borrowings

Borrowings consist of the following (in thousands):

 

 

 

December 31,

 

 

 

2017

 

 

2016

 

Facility Financing Obligation (2019 Notes and

   Tranche B Notes)

 

 

 

 

 

 

 

 

Principal amount

 

$

54,407

 

 

$

75,000

 

Unamortized debt issuance costs and debt discount

 

 

(1,662

)

 

 

(3,661

)

Net carrying amount

 

$

52,745

 

 

$

71,339

 

Senior Convertible Notes (2021 Notes)

 

 

 

 

 

 

 

 

Principal amount

 

$

23,690

 

 

$

27,690

 

Unamortized premium

 

 

721

 

 

 

426

 

Unaccreted debt issuance costs

 

 

—

 

 

 

(481

)

Net carrying amount

 

$

24,411

 

 

$

27,635

 

Note payable to principal stockholder - net carrying

   amount

 

$

79,666

 

 

$

49,521

 

 
Accretion of Debt Issuance Cost and Debt Discount

Accretion of debt issuance cost and debt discount in connection with the Facility Agreement does not include the acceleration of the debt discount and issuance costs related to the transactions disclosed above as the amounts were included in the loss on extinguishment of debt in the consolidated statement of operations. Accretion of debt issuance cost and debt discount during the years ended December 31, 2017, 2016 and 2015 were as follows (in thousands):

 

 

 

December 31,

 

 

 

2017

 

 

2016

 

 

2015

 

Accretion expense - debt issuance cost

 

$

31

 

 

$

35

 

 

 

35

 

Accretion expense - debt discount

 

$

1,700

 

 

$

1,722

 

 

 

1,553