Quarterly report pursuant to Section 13 or 15(d)

CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY (unaudited)

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CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY (unaudited) - USD ($)
$ in Thousands
Series A Convertible Preferred Stock [Member]
Common Stock [Member]
Additional Paid-in Capital [Member]
Accumulated Other Comprehensive Gain (loss) [Member]
Accumulated Deficit [Member]
Total
Balance, at beginning at Dec. 31, 2017     $ 186,991 $ (12) $ (162,363) $ 24,616
Balance, at beginning (in shares) at Dec. 31, 2017   82,064        
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Issuance of common stock related to restricted stock units (in shares)   8        
Issuance of common stock in March ($321.00 per share), net of transaction expenses of $45     532     532
Issuance of common stock in March ($321.00 per share), net of transaction expenses of $45 (in shares)   1,800        
Stock-based compensation     399     399
Foreign currency translation gain (loss)       (1)   (1)
Net loss         (6,935) (6,935)
Balance, at end at Mar. 31, 2018     187,922 (13) (169,298) 18,611
Balance, at end (in shares) at Mar. 31, 2018   83,872        
Balance, at beginning at Dec. 31, 2017     186,991 (12) (162,363) 24,616
Balance, at beginning (in shares) at Dec. 31, 2017   82,064        
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net loss           (18,501)
Balance, at end at Sep. 30, 2018     194,602 (29) (180,864) 13,709
Balance, at end (in shares) at Sep. 30, 2018   108,579        
Balance, at beginning at Mar. 31, 2018     187,922 (13) (169,298) 18,611
Balance, at beginning (in shares) at Mar. 31, 2018   83,872        
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Issuance of common stock in April ($321.00 per share)     1,315     1,315
Issuance of common stock in April ($321.00 per share) (in shares)   4,500        
Issuance of common stock in June 2018 under At-the-market offering, net of transaction expenses of $50     1,615     1,615
Issuance of common stock in June 2018 under At-the-market offering, net of transaction expenses of $50 (in shares)   3,592        
Stock-based compensation     409     409
Foreign currency translation gain (loss)       (21)   (21)
Net loss         (6,087) (6,087)
Balance, at end at Jun. 30, 2018     191,261 (34) (175,385) 15,842
Balance, at end (in shares) at Jun. 30, 2018   91,964        
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Issuance of common stock under 2018 Purchase Agreement     409     409
Issuance of common stock under 2018 Purchase Agreement (in shares)   4,500        
Issuance of common stock in July, August and September 2018 under At-the-market offering, net of transaction expenses of $77     2,481     2,481
Issuance of common stock in July, August and September 2018 under At-the-market offering, net of transaction expenses of $77 (in shares)   12,115        
Stock-based compensation     451     451
Foreign currency translation gain (loss)       5   5
Net loss         (5,479) (5,479)
Balance, at end at Sep. 30, 2018     194,602 (29) (180,864) 13,709
Balance, at end (in shares) at Sep. 30, 2018   108,579        
Balance, at beginning at Dec. 31, 2018     212,157 (41) (188,452) 23,664
Balance, at beginning (in shares) at Dec. 31, 2018 9,856 328,689        
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Issuance of common stock upon conversion of Series A Convertible preferred stock $ 1 (1)      
Issuance of common stock upon conversion of Series A Convertible preferred stock (in shares) (9,856) 281,610        
Issuance of common stock in exchange for exercise of warrants in March 2019 ($35.00 per share)     70     70
Issuance of common stock in exchange for exercise of warrants in March 2019 ($35.00 per share) (in shares)   2,000        
Employee stock purchase plan     3     3
Employee stock purchase plan (in shares)   177        
Stock-based compensation     305     305
Foreign currency translation gain (loss)       2   2
Net loss         (6,233) (6,233)
Balance, at end at Mar. 31, 2019   $ 1 212,534 (39) (194,685) 17,811
Balance, at end (in shares) at Mar. 31, 2019   612,476        
Balance, at beginning at Dec. 31, 2018     212,157 (41) (188,452) 23,664
Balance, at beginning (in shares) at Dec. 31, 2018 9,856 328,689        
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net loss           (19,911)
Balance, at end at Sep. 30, 2019   $ 2 218,258 (42) (208,363) 9,855
Balance, at end (in shares) at Sep. 30, 2019   1,575,246        
Balance, at beginning at Mar. 31, 2019   $ 1 212,534 (39) (194,685) 17,811
Balance, at beginning (in shares) at Mar. 31, 2019   612,476        
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Issuance of common stock under 2018 Purchase Agreement     387     387
Issuance of common stock under 2018 Purchase Agreement (in shares)   22,754        
Issuance of common stock under At-the-market offering, net of transactional expenses of $1     33     33
Issuance of common stock under At-the-market offering, net of transactional expenses of $1 (in shares)   2,106        
Stock-based compensation     431     431
Net loss         (5,840) (5,840)
Balance, at end at Jun. 30, 2019   $ 1 213,385 (39) (200,525) 12,822
Balance, at end (in shares) at Jun. 30, 2019   637,336        
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Issuance of common stock under July 2019 Financing, net of transactional expenses of $484   $ 1 4,483     4,484
Issuance of common stock under July 2019 Financing, net of transactional expenses of $484 (in shares)   900,000        
Issuance of commitment shares in August 2019 under 2019 Purchase Agreement (in shares)   35,529        
Employee stock purchase plan     28     28
Employee stock purchase plan (in shares)   2,381        
Stock-based compensation     362     362
Foreign currency translation gain (loss)       (3)   (3)
Net loss         (7,838) (7,838)
Balance, at end at Sep. 30, 2019   $ 2 $ 218,258 $ (42) $ (208,363) $ 9,855
Balance, at end (in shares) at Sep. 30, 2019   1,575,246