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Consolidated Balance Sheets - USD ($)
$ in Thousands
Jul. 31, 2020
Apr. 30, 2020
Current assets:    
Cash and cash equivalents $ 11,065 $ 10,002
Restricted cash- short-term 707 707
Accounts receivable 21 105
Contract assets 366 251
Other current assets 447 588
Total current assets 12,606 11,653
Property and equipment, net 462 499
Right-of-use asset, net 1,113 1,165
Restricted cash- long-term 221 221
Total assets 14,402 13,538
Current liabilities:    
Accounts payable 228 220
Accrued expenses 1,783 1,353
Contract liabilities- current 87 100
Right-of-use liability- current 236 229
Warrant liabilities
Paycheck protection program loan- current 396
Total current liabilities 2,730 1,902
Right-of-use liability less current portion 1,017 1,078
Contract liabilities less current portion 44 65
Paycheck protection program loan less current portion 494
Total liabilities 4,285 3,045
Commitments and contingencies (Note 15)
Stockholders' Equity:    
Preferred stock, $0.001 par value; authorized 5,000,000 shares, none issued or outstanding
Common stock, $0.001 par value; authorized 100,000,000 shares, issued 18,624,816 and 12,939,420 shares, respectively 19 13
Treasury stock, at cost; 4,251 shares (302) (302)
Additional paid-in capital 234,089 231,101
Accumulated deficit (223,521) (220,136)
Accumulated other comprehensive loss (168) (183)
Total stockholders' equity 10,117 10,493
Total liabilities and stockholders' equity $ 14,402 $ 13,538