Quarterly report pursuant to Section 13 or 15(d)

Notes Payable (Details)

v3.19.3
Notes Payable (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2019
Mar. 29, 2019
Dec. 31, 2018
Debt Instrument [Line Items]      
Horizon Notes [1],[2] $ 15,750   $ 0
Less: Discount on notes payable 2,565   0
Notes Payable $ 13,185   $ 0
Interest Rate 2.50% 9.00%  
Final payment fee $ 750 $ 750  
Horizon Notes      
Debt Instrument [Line Items]      
Interest Rate [1],[2] 9.00%    
Debt Instrument, Maturity Date [1],[2] Oct. 31, 2022    
LIBOR Rate      
Debt Instrument [Line Items]      
Interest Rate 9.00%    
[1] Balance includes $0.75 million final payment fee
[2] Interest rate is 9.00% plus one-month LIBOR Rate in excess of 2.5%