Condensed Consolidated Statement of Stockholders' Equity (Deficit) - 9 months ended Sep. 30, 2017 - USD ($) $ in Thousands |
Total |
Initial Public Offering [Member] |
Bridge Loan [Member] |
Bridge Loan [Member]
Initial Public Offering [Member]
|
Series B Redeemable Convertible Preferred Stock [Member] |
Series B Redeemable Convertible Preferred Stock [Member]
Initial Public Offering [Member]
|
Series A Redeemable Convertible Preferred Stock [Member] |
Series A Redeemable Convertible Preferred Stock [Member]
Initial Public Offering [Member]
|
Conversion of Convertible Note Payable [Member]
Initial Public Offering [Member]
|
Common Stock [Member] |
Common Stock [Member]
Initial Public Offering [Member]
|
Common Stock [Member]
Bridge Loan [Member]
|
Common Stock [Member]
Bridge Loan [Member]
Initial Public Offering [Member]
|
Common Stock [Member]
Series B Redeemable Convertible Preferred Stock [Member]
Initial Public Offering [Member]
|
Common Stock [Member]
Series A Redeemable Convertible Preferred Stock [Member]
Initial Public Offering [Member]
|
Common Stock [Member]
Conversion of Convertible Note Payable [Member]
Initial Public Offering [Member]
|
Additional Paid-in Capital [Member] |
Additional Paid-in Capital [Member]
Initial Public Offering [Member]
|
Additional Paid-in Capital [Member]
Bridge Loan [Member]
|
Additional Paid-in Capital [Member]
Bridge Loan [Member]
Initial Public Offering [Member]
|
Additional Paid-in Capital [Member]
Series B Redeemable Convertible Preferred Stock [Member]
Initial Public Offering [Member]
|
Additional Paid-in Capital [Member]
Series A Redeemable Convertible Preferred Stock [Member]
Initial Public Offering [Member]
|
Additional Paid-in Capital [Member]
Conversion of Convertible Note Payable [Member]
Initial Public Offering [Member]
|
Accumulated Other Comprehensive Loss [Member] |
Accumulated Deficit [Member] |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Beginning balance at Dec. 31, 2016 | $ (45,525) | $ 4 | $ (293) | $ (45,236) | |||||||||||||||||||||
Beginning balance, shares at Dec. 31, 2016 | 2,620,803 | ||||||||||||||||||||||||
Issuance of common stock | $ 32,580 | $ 3,666 | $ 3 | $ 0 | $ 32,577 | $ 3,666 | |||||||||||||||||||
Issuance of common stock, shares | 12,335,519 | 2,500,000 | 2,500,000 | 300,000 | |||||||||||||||||||||
Conversion of preferred stock upon public offering | $ 18,668 | $ 8,598 | $ 2 | $ 3 | $ 18,666 | $ 8,595 | |||||||||||||||||||
Conversion of preferred stock upon public offering, shares | 2,309,135 | 2,922,798 | 2,309,135 | 2,922,798 | |||||||||||||||||||||
Exercise of Primary Warrant upon public offering | $ 29,263 | $ 2 | $ 29,261 | ||||||||||||||||||||||
Exercise of Primary Warrant upon public offering, shares | 2,150,335 | ||||||||||||||||||||||||
Conversion of debt and accrued interest upon public offering | $ 8,045 | $ 20,737 | $ 1 | $ 2 | $ 8,044 | $ 20,735 | |||||||||||||||||||
Conversion of debt and accrued interest upon public offering, shares | 590,717 | 590,717 | 1,523,746 | ||||||||||||||||||||||
Issuance of restricted stock, net of forfeitures | $ 0 | $ 0 | 0 | $ 0 | 0 | ||||||||||||||||||||
Issuance of restricted stock, net of forfeitures, shares | 30,415 | ||||||||||||||||||||||||
Repurchase of common stock | $ (56) | $ 0 | (56) | ||||||||||||||||||||||
Repurchase of common stock, shares | (7,500) | (7,500) | |||||||||||||||||||||||
Exercise of options | $ 5 | $ (2) | 7 | ||||||||||||||||||||||
Exercise of options, shares | 3,281 | 3,281 | |||||||||||||||||||||||
Issuance of warrants | $ 8,658 | 8,658 | |||||||||||||||||||||||
Beneficial conversion feature | 554 | 554 | |||||||||||||||||||||||
Modification of warrants | 371 | 371 | |||||||||||||||||||||||
Stock-based compensation expense | 13,611 | $ 0 | 13,611 | ||||||||||||||||||||||
Stock-based compensation expense, shares | 12,592 | ||||||||||||||||||||||||
Accretion of redeemable convertible preferred stock | (4,470) | (4,470) | |||||||||||||||||||||||
Net loss | (46,811) | (46,811) | |||||||||||||||||||||||
Other comprehensive loss | (62) | (62) | |||||||||||||||||||||||
Ending balance at Sep. 30, 2017 | $ 47,832 | $ 15 | $ 144,396 | $ (62) | $ (96,517) | ||||||||||||||||||||
Ending balance, shares at Sep. 30, 2017 | 14,956,322 |