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Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 12 Months Ended
Apr. 30, 2021
Apr. 30, 2020
Cash Flows from Operating Activities    
Net loss $ (3,607) $ (4,624)
Adjustments to reconcile net loss to net cash provided by operating activities:    
Depreciation 2,687 2,654
Bad debt provision 53 364
Stock based compensation expense 634 251
Provision for deferred income taxes 1,662 1,895
Change in assets and liabilities:    
Receivables (6,087) 4,833
Inventories (1,188) 1,876
Income tax receivable 1,762 (2,717)
Accounts payable and other accrued expenses 4,567 (2,016)
Deferred revenue 615 909
Other, net (186) 736
Net cash provided by operating activities 912 4,161
Cash Flows from Investing Activities    
Capital expenditures (2,397) (2,465)
Net cash used in investing activities (2,397) (2,465)
Cash Flows from Financing Activities    
Dividends paid 0 (1,044)
Dividends paid to non-controlling interest in subsidiaries (108) (324)
Proceeds from short-term borrowings 62,205 58,721
Repayments on short-term borrowings (60,096) (63,515)
Payments on long-term debt (19) (1,282)
Net proceeds from exercise of stock options (including tax benefit) 0 (14)
Net cash provided by (used in) financing activities 1,982 (7,458)
Effect of exchange rate changes on cash, net 19 (179)
Increase (Decrease) in Cash, Cash Equivalents and Restricted Cash 516 (5,941)
Cash, Cash Equivalents and Restricted Cash at Beginning of Year 5,215 11,156
Cash, Cash Equivalents and Restricted Cash at End of Year 5,731 5,215
Supplemental Disclosure of Cash Flow Information    
Interest paid 65 513
Income taxes (refunded) paid $ (1,800) $ 188