Annual report pursuant to Section 13 and 15(d)

Debt (Tables)

v3.10.0.1
Debt (Tables)
 12 Months Ended
Dec. 31, 2018
Debt Disclosure [Abstract]  
Schedule of convertible debt obligations
The Company’s outstanding debt obligations as of December 31, 2018 and 2017 were as follows:

 
 
December 31,
 
 
2018
 
2017
Convertible Notes due 2019
 
$
172,500

 
$
172,500

Unaccreted discount on Convertible Notes due 2019
 
(5,890
)
 
(11,677
)
Unamortized issuance costs on Convertible Notes due 2019
 
(899
)
 
(1,833
)
Convertible Notes due 2019 carrying value
 
$
165,711

 
$
158,990

 
 
 
 
 
Convertible Notes due 2023
 
$
345,000

 
$
—

Unaccreted discount on Convertible Notes due 2023
 
(42,641
)
 
—

Unamortized issuance costs on Convertible Notes due 2023
 
(7,634
)
 
—

Convertible Notes due 2023 carrying value
 
$
294,725

 
$
—

 
 
 
 
 
Revolving credit facility balance
 
$
—

 
$
81,168

Schedule of interest expense
Interest expense on the Convertible Notes due 2019 and 2023 and the Second Amended and Restated Credit agreement was comprised of the following:

 
 
Year Ended December 31,
 
 
2018
 
2017
 
2016
Coupon interest
 
$
6,650

 
$
3,019

 
$
3,019

Amortization of issuance costs
 
2,771

 
3,279

 
2,875

Accretion of debt discount
 
11,134

 
5,472

 
5,237

Interest on revolving credit facility
 
3,994

 
4,153

 
5,128

Undrawn and other fees
 
654

 
424

 
341

Total
 
$
25,203

 
$
16,347

 
$
16,600