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Borrowings (Tables)
 12 Months Ended
Dec. 31, 2018
Debt Disclosure [Abstract]  
Schedule of Notes Payable

As of December 31, 2018, note payable consist of the following:

 

(in thousands)

 

December 31, 2018

 

Note payable

 

$

15,000

 

Less: current portion

 

 

—

 

Note payable, net of current portion

 

 

15,000

 

Debt discount, net of accretion

 

 

(293

)

Accretion related to final payment

 

 

166

 

Note payable net of discount, long-term

 

$

14,873

 
Summary of Estimated Future Principal Payments Due Under Loan Agreement

Estimated future principal payments due under the Loan Agreement are as follows:

 

(in thousands)

 

Note Principal Payments

 

2019

 

$

—

 

2020

 

 

8,402

 

2021

 

 

6,598

 

Total

 

$

15,000