CONSOLIDATED BALANCE SHEETS - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Current assets:    
Cash and cash equivalents $ 153,225 $ 95,697
Accounts receivable, net 2,129  
Inventory 1,316  
Prepaid expenses and other current assets 1,905 1,186
Total current assets 158,575 96,883
Property and equipment, net 1,038 738
Intangible assets, net 2,103  
Restricted cash 97 97
Other long-term assets 204  
Total assets 162,017 97,718
Current liabilities:    
Accounts payable 9,106 3,537
Accrued expenses 8,879 2,228
Deferred revenue 4,944  
Current portion of term loan payable 2,667 2,667
Total current liabilities 25,596 8,432
Lease incentive obligation 34 68
Term loan payable, long-term 1,479 4,146
Total liabilities 27,109 12,646
Commitments and contingencies (see Note 9)
Shareholders’ equity (deficit):    
Preferred stock, $0.001 par value; authorized shares - 5,000,000 at December 31, 2016 and December 31, 2015; issued and outstanding shares - none at December 31, 2016 and December 31, 2015
Common stock, $0.001 par value; authorized shares - 100,000,000 at December 31, 2016 and December 31, 2015; issued and outstanding shares - 29,364,100 at December 31, 2016 and 20,739,351 at December 31, 2015 29 21
Additional paid-in capital 358,063 214,062
Accumulated deficit (223,184) (129,008)
Treasury stock   (3)
Total shareholders’ equity 134,908 85,072
Total liabilities and shareholders’ equity $ 162,017 $ 97,718