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Debt (Tables)
3 Months Ended
Mar. 31, 2019
Debt Disclosure [Abstract]  
Schedule of Debt
Total debt consists of the following:
 
March 31, 2019
 
December 31, 2018
Convertible Senior Notes
$
97,429

 
$
113,980

Unamortized debt issuance cost (1)
(224
)
 
(438
)
Total debt, carrying value
$
97,205

 
$
113,542

Total short-term debt, carrying value
$
97,205

 
$
113,542

________________________________
(1)
Unamortized debt issuance cost is related to Convertible Senior Notes.
Schedule of Long-term Debt Instruments
The following table summarizes the Company’s interest expense:
 
 
Three Months Ended March 31,
 
 
2019
 
2018
Convertible Senior Notes
 
 
 
 
Amortization of debt issuance costs
 
155

 
353

Interest on borrowings
 
191

 
431

Additional interest on default
 

 
129

Capital leases
 

 
242

Other
 
239

 
92

Total
 
$
585

 
$
1,247