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Consolidated Balance Sheets - USD ($)
$ in Thousands
Apr. 30, 2022
Apr. 30, 2021
Current assets:    
Cash and cash equivalents $ 7,885 $ 83,028
Short-term investments 49,384
Restricted cash, short-term 258 384
Accounts receivable 482 350
Contract assets 386 190
Inventory 442
Other current assets 467 487
Total current assets 59,304 84,439
Property and equipment, net 445 406
Intangibles, net 4,136 274
Right-of-use asset, net 752 1,036
Restricted cash, long-term 219 222
Goodwill 8,537
Total assets 73,393 86,377
Current liabilities:    
Accounts payable 905 687
Accrued expenses 877 1,881
Contract liabilities 129
Right-of-use liability, current portion 319 347
Contingent liabilities, current portion 748
Litigation payable 1,224
Liability classified stock awards 60
Paycheck protection program loan, current portion 495
Total current liabilities 2,978 4,694
Deferred tax liability 203
Contingent liabilities, less current portion 843
Paycheck protection program loan, less current portion 396
Right-of-use liability, less current portion 538 819
Total liabilities 4,562 5,909
Commitments and contingencies (Note 17)
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 and outstanding 55,905,213 and 52,479,051 shares, respectively 56 52
Treasury stock, at cost; 23,352 and 21,040 shares, respectively (341) (338)
Additional paid-in capital 322,932 315,820
Accumulated deficit (253,770) (234,895)
Accumulated other comprehensive loss (46) (171)
Total shareholders’ equity 68,831 80,468
Total liabilities and shareholders’ equity $ 73,393 $ 86,377