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Debt Obligations - (Tables)
 12 Months Ended
Dec. 31, 2018
Debt Disclosure [Abstract]  
Schedule of Interest Cost Recognized Relating to Notes

The following table presents the amount of interest cost recognized relating to the Notes during the years ended December 31, 2018, 2017 and 2016.

 

 

 

December 31,

 

 

 

2018

 

 

2017

 

 

2016

 

Contractual interest coupon

 

$

—

 

 

$

—

 

 

$

1,186

 

Amortization of interest discount

 

 

—

 

 

 

—

 

 

 

1,893

 

Amortization of debt issuance costs

 

 

—

 

 

 

—

 

 

 

261

 

Total interest cost recognized

 

$

—

 

 

$

—

 

 

$

3,340