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Consolidated Condensed Statements of Cash Flows Unaudited - USD ($)
$ in Thousands
 3 Months Ended
Apr. 30, 2023
Apr. 30, 2022
Statement of Cash Flows [Abstract]    
Net income including noncontrolling interests $ 6,700 $ 6,986
Adjustments to reconcile net income to net cash used in operating activities:    
Depreciation 4,420 4,459
Amortization of operating lease right-of-use assets 1,334 1,430
Income from equity method investments (1,490) (1,951)
Interest income from investments (2,052) (148)
Deferred income tax 1,342 1,161
Stock-based compensation expense 612 218
(Gain) loss on sale of property and equipment – net (10) 5
Changes in assets and liabilities:    
Accounts receivable (4,055) 381
Inventories 7,445 (14,163)
Refundable income taxes (2,021) 581
Other assets (3,342) (3,529)
Accounts payable, trade (16,066) (13,233)
Other liabilities (3,444) 124
Net cash used in operating activities (10,627) (17,679)
Cash flows from investing activities:    
Capital expenditures (4,199) (1,462)
Purchase of short-term investments (102,348) (161,599)
Sale of short-term investments 127,588 20,278
Proceeds from sale of real estate and property and equipment 10  
Deposits (9)  
Net cash provided by (used in) investing activities 21,042 (142,783)
Cash flows from financing activities:    
Payments to noncontrolling interests holders (716) (1)
Net cash used in financing activities (716) (1)
Net increase (decrease) in cash, cash equivalents and restricted cash 9,699 (160,463)
Cash, cash equivalents and restricted cash, beginning of period 71,347 232,068
Cash, cash equivalents and restricted cash, end of period 81,046 71,605
Non-cash investing activities – Accrued capital expenditures 274 205
Non-cash financing activities – Stock awards accrued 189 174
Right-of-use assets acquired and liabilities incurred upon lease execution 97 3,460
Cash and cash equivalents 77,667 66,685
Restricted cash 3,379 4,920
Total cash, cash equivalents and restricted cash $ 81,046 $ 71,605