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Consolidated Balance Sheets - USD ($)
$ in Thousands
Oct. 31, 2021
Apr. 30, 2021
Current assets:    
Cash and cash equivalents $ 72,630 $ 83,028
Restricted cash, short-term 384 384
Accounts receivable 180 350
Contract assets 325 190
Other current assets 560 487
Total current assets 74,079 84,439
Property and equipment, net 360 406
Intangibles, net 262 274
Right-of-use asset, net 897 1,036
Restricted cash, long-term 222 222
Total assets 75,820 86,377
Current liabilities:    
Accounts payable 277 687
Accrued expenses 1,576 1,881
Contract liabilities 117
Right-of-use liability, current portion 327 347
Litigation payable 1,224
Liability classified stock awards 60 60
Paycheck protection program loan- current 495
Total current liabilities 2,357 4,694
Paycheck protection program loan, less current portion 396
Right-of-use liability, less current portion 690 819
Total liabilities 3,047 5,909
Commitments and contingencies (Note 16)
Shareholders’ 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 52,499,051 and 52,458,011 shares, respectively 52 52
Treasury stock, at cost; 21,040 shares (338) (338)
Additional paid-in capital 316,389 315,821
Accumulated deficit (243,191) (234,896)
Accumulated other comprehensive loss (139) (171)
Total shareholders’ equity 72,773 80,468
Total liabilities and shareholders’ equity $ 75,820 $ 86,377