Consolidated Balance Sheets - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Current assets:    
Cash and cash equivalents $ 40,127 $ 26,361
Prepaid expenses and other current assets 1,457 696
Total current assets 41,584 27,057
Property and equipment, net 2,617 2,582
Finance and Operating Lease, Right-of-Use Asset 6,306 0
Restricted cash 6,156  
Restricted cash 631 316
Other non-current assets 1,473 1,160
Total assets 52,611 31,115
Current liabilities:    
Accounts payable 553 1,659
Accrued expenses and other current liabilities 4,611 3,816
Lease liabilities 1,117 0
Current portion of long-term debt 0 5,257
Total current liabilities 6,281 10,732
Non-current liabilities:    
Long-term debt, net of current portion 13,407 9,565
Warrant liability 2,486 3,472
Lease liabilities, net of current portion 5,395 0
Other non-current liabilities 0 11
Total liabilities 27,569 23,780
Commitments and contingencies (Note 6)
Stockholders’ equity:    
Preferred stock, $0.001 par value; (shares authorized of 25,000,000 at December 31, 2019 and 2018; 1,635 shares issued and outstanding at December 31, 2019 and 2018) 701 701
Common stock, $0.001 par value; (shares authorized of 85,000,000 and 250,000,000 at December 31, 2019 and 2018; 27,452,900 shares issued and outstanding at December 31, 2019 and 10,846,397 shares issued and outstanding at December 31, 2018) 27 11
Additional paid-in capital 355,268 298,627
Accumulated deficit (330,954) (292,004)
Total stockholders’ equity 25,042 7,335
Total liabilities and stockholders’ equity $ 52,611 $ 31,115