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Consolidated Condensed Statements of Cash Flows Unaudited - USD ($)
$ in Thousands
 6 Months Ended
Jul. 31, 2023
Jul. 31, 2022
Statement of Cash Flows [Abstract]    
Net income including noncontrolling interests $ 18,984 $ 21,871
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation 8,915 8,984
Amortization of operating lease right-of-use assets 2,671 2,835
Income from equity method investments (4,537) (5,549)
Interest income from investments (3,967) (488)
Deferred income tax 3,947 4,153
Stock based compensation expense 3,892 856
Loss on sale of property and equipment – net 205 5
Changes in assets and liabilities:    
Accounts receivable (6,836) (12,738)
Inventories 2,784 (7,703)
Refundable income taxes (2,692) 779
Other assets (5,153) (2,153)
Accounts payable, trade (12,595) (11,254)
Other liabilities 3,019 1,173
Net cash provided by operating activities 8,637 771
Cash flows from investing activities:    
Capital expenditures (8,173) (2,936)
Purchase of short-term investments (194,400) (189,988)
Sale of short-term investments 227,490 25,882
Proceeds from sale of real estate and property and equipment 10  
Deposits (20)  
Net cash provided by (used in) investing activities 24,907 (167,042)
Cash flows from financing activities:    
Treasury stock acquired   (6,193)
Payments to noncontrolling interests holders (716) (1,633)
Net cash used in financing activities (716) (7,826)
Net increase (decrease) in cash, cash equivalents and restricted cash 32,828 (174,097)
Cash, cash equivalents and restricted cash, beginning of period 71,347 232,068
Cash, cash equivalents and restricted cash, end of period 104,175 57,971
Non cash investing activities – Accrued capital expenditures 1,029 260
Non cash financing activities – Stock awards accrued 570 563
Non cash financing activities – Stock awards issued 965 1,539
Right-of-use assets acquired and liabilities incurred upon lease execution 312 4,507
Cash and cash equivalents 102,166 54,639
Restricted cash 2,009 3,332
Total cash, cash equivalents and restricted cash $ 104,175 $ 57,971