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Condensed Consolidated Balance Sheets - USD ($)
$ in Thousands
Mar. 31, 2017
Dec. 31, 2016
Current assets:    
Cash and cash equivalents $ 14,533 $ 10,264
Short-term investments   6,800
Restricted cash 12,735 19,468
Accounts receivable 227 31
Prepaid and other current assets 1,041 958
Total current assets 28,536 37,521
Restricted cash, noncurrent 125 125
Property and equipment, net 399 444
Total assets 29,060 38,090
Current liabilities:    
Accounts payable 899 837
Accrued compensation 645 596
Other accrued liabilities 730 805
Deferred revenue, current portion 259 283
Deferred rent, current portion 40 41
Redeemable convertible notes 12,651 19,403
Total current liabilities 15,224 21,965
Deferred revenue, noncurrent portion   47
Deferred rent, noncurrent portion   7
Total liabilities 15,224 22,019
Stockholders’ equity:    
Preferred stock, $0.001 par value, 5,000,000 shares and no shares authorized and outstanding at both March 31, 2017 and December 31, 2016
Common stock, $0.001 par value, 100,000,000 shares authorized; 1,000,036 and 801,756 shares issued and outstanding at March 31, 2017 and December 31, 2016 2 1
Additional paid-in capital 165,954 164,053
Accumulated other comprehensive income (loss)   (1)
Accumulated deficit (152,120) (147,982)
Total stockholders’ equity 13,836 16,071
Total liabilities and stockholders’ equity $ 29,060 $ 38,090