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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 12 Months Ended
Apr. 30, 2019
Apr. 30, 2018
Operating activities:    
Net income (loss) $ 128 $ (1,476)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:    
Stock-based compensation and modification expense 636 1,004
Depreciation and amortization expense 606 360
Deferred rent 397 454
Deferred compensation 0 7
Provision for (recovery of) doubtful accounts 71 (44)
Issuance of common stock for services 6 30
Changes in operating assets and liabilities:    
Accounts receivable (531) (1,600)
Prepaid expenses and other current assets (21) 13
Other long term assets (12) (9)
Accounts payable 653 301
Accrued liabilities 611 (90)
Other non-current liability 0 30
Deferred revenue (682) (206)
Net cash provided by (used in) operating activities 1,862 (1,226)
Investing activities:    
Purchase of property and equipment (834) (1,229)
Gain on disposal of fixed assets 0 3
Net cash used in investing activities (834) (1,226)
Financing activities:    
Proceeds from exercise of options and warrants 1,465 38
Capital lease payments (262) (25)
Net cash provided by financing activities 1,203 13
Increase/(decrease) in cash and restricted cash 2,231 (2,439)
Cash and restricted cash, beginning of year 1,006 3,445
Cash and restricted cash, end of year 3,237 1,006
Non-cash investing and financing activities:    
Purchase equipment under capital lease $ 235 $ 0