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Consolidated Balance Sheets - USD ($)
$ in Thousands
Apr. 30, 2021
Apr. 30, 2020
Current assets:    
Cash and cash equivalents $ 83,028 $ 10,002
Restricted cash, short-term 384 707
Accounts receivable 350 105
Contract assets 190 251
Other current assets 487 588
Total current assets 84,439 11,653
Property and equipment, net 406 499
Intangibles, net 274
Right-of-use asset, net 1,036 1,165
Restricted cash, long-term 222 221
Total assets 86,377 13,538
Current liabilities:    
Accounts payable 687 220
Accrued expenses 1,881 1,353
Contract liabilities, current portion 100
Right-of-use liability, current portion 495 229
Litigation payable 1,224
Liability classified stock awards 60
Warrant liabilities
Paycheck protection program loan- current 347
Total current liabilities 4,694 1,902
Paycheck protection program loan, less current portion 396
Right-of-use liability, less current portion 819 1,078
Contract liabilities, less current portion 65
Total liabilities 5,909 3,045
Commitments and contingencies (Note 17)
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 and outstanding 52,458,011 and 12,939,420 shares, respectively 52 13
Treasury stock, at cost; 21,040 and 4,251 shares, respectively (338) (302)
Additional paid-in capital 315,821 231,101
Accumulated deficit (234,896) (220,136)
Accumulated other comprehensive loss (171) (183)
Total stockholders' equity 80,468 10,493
Total liabilities and stockholders' equity $ 86,377 $ 13,538