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Consolidated Condensed Statements Of Cash Flows (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Apr. 30, 2013
Apr. 30, 2012
Cash flows from operating activities:    
Net income including noncontrolling interests $ 4,073 $ 1,492
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation and amortization 4,391 4,021
Income from equity method investments (1,599) (442)
(Gain) loss on disposal of real estate and property and equipment (4) 16
Dividends received from equity method investees 200 2,005
Deferred income (274) (590)
Derivative financial instruments (444) (336)
Deferred income tax 2,026  
Changes in assets and liabilities:    
Accounts receivable (6,351) (2,241)
Inventory 3,734 4,724
Refundable income taxes 150 552
Other assets 828 296
Accounts payable, trade 2,264 (996)
Other liabilities (195) (3,525)
Net cash provided by operating activities 8,799 4,976
Cash flows from investing activities:    
Capital expenditures (32) (1,683)
Restricted investments   360
Proceeds from sale of real estate and property and equipment 141 478
Net cash provided by (used in) investing activities 109 (845)
Cash flows from financing activities:    
Payments of long-term debt (4,201) (6,813)
Stock options exercised 555 259
Noncontrolling interests distribution and other   (526)
Treasury stock acquired (564)  
Net cash used in financing activities (4,210) (7,080)
Net increase (decrease) in cash and cash equivalents 4,698 (2,949)
Cash and cash equivalents, beginning of period 69,073 75,013
Cash and cash equivalents, end of period 73,771 72,064
Non cash financing activities - Cashless exercise of stock options   $ 1,071