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Condensed Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 3 Months Ended
Jul. 31, 2025
Jul. 31, 2024
Cash flows from operating activities:    
Net income $ 634 $ 2,430
Non-cash charges to earnings 1,268 1,328
Net changes in operating assets and liabilities (741) (5,216)
Net cash provided by (used in) operating activities 1,161 (1,458)
Cash flows from investing activities:    
Purchase of fixed assets (776) (327)
Net cash used in investing activities (776) (327)
Cash flows from financing activities:    
Purchase of Treasury stock (583) (62)
Net cash used in financing activities (583) (62)
Net decrease in cash and cash equivalents and restricted cash (198) (1,847)
Cash and cash equivalents and restricted cash at beginning of period 6,085 19,265
Cash and cash equivalents and restricted cash at end of period 5,887 17,418
Cash paid during the period for:    
Interest 23 27
Income Taxes $ 0 $ 7