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Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 12 Months Ended
Apr. 30, 2019
Apr. 30, 2018
Cash Flows from Operating Activities    
Net earnings $ 1,688 $ 5,458
Adjustments to reconcile net earnings to net cash provided by operating activities:    
Depreciation 2,571 2,761
Bad debt provision 65 344
Stock based compensation expense 197 355
Provision for deferred income tax expense 202 1,127
Change in assets and liabilities:    
Receivables (664) (3,115)
Inventories 456 (2,866)
Accounts payable and other accrued expenses (55) 4,606
Deferred revenue (285) (3,922)
Other, net (1,685) (1,565)
Net cash provided by operating activities 2,490 3,183
Cash Flows from Investing Activities    
Capital expenditures (4,213) (3,395)
Net cash used in investing activities (4,213) (3,395)
Cash Flows from Financing Activities    
Dividends paid (2,030) (1,794)
Dividends paid to noncontrolling interest in subsidiaries (51) (74)
Proceeds from short-term borrowings 62,646 59,069
Repayments on short-term borrowings (57,018) (58,775)
Payments on long-term debt and lease obligations (1,177) (918)
Net proceeds from exercise of stock options (including tax benefit) (36) 8
Net cash provided by (used in) financing activities 2,334 (2,484)
Effect of exchange rate changes on cash, net (413) (287)
Increase (Decrease) in Cash, Cash Equivalents and Restricted Cash 198 (2,983)
Cash, Cash Equivalents and Restricted Cash at Beginning of Year 10,958 13,941
Cash, Cash Equivalents and Restricted Cash at End of Year 11,156 10,958
Supplemental Disclosure of Cash Flow Information    
Interest paid 352 295
Income taxes paid $ 2,460 $ 2,872