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CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)
In Thousands, unless otherwise specified
 9 Months Ended
Oct. 31, 2014
Oct. 31, 2013
Net income including noncontrolling interests $ 79,507 $ 22,296
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation, impairment charges and amortization 12,480 13,178
Income from equity method investments (24,322) (9,558)
Gain on disposal of real estate and property and equipment (209) (989)
Dividends received from equity method investees 19,881 200
Deferred income   (590)
Derivative financial instruments (1,141) (1,249)
Deferred income tax 5,323 8,241
Excess tax benefit from stock option exercises (441)  
Changes in assets and liabilities:    
Accounts receivable 5,900 293
Inventories 7,874 8,613
Other assets 728 1,933
Accounts payable, trade 2,075 2,589
Other liabilities 7,406 (1,529)
Net cash provided by operating activities 115,061 43,428
Cash flows from investing activities:    
Capital expenditures (8,107) (2,159)
Restricted cash 500 (500)
Repayment of loan receivable   681
Restricted investments and deposits 273 280
Proceeds from sale of real estate and property and equipment 596 3,406
Net cash (used in) provided by investing activities (6,738) 1,708
Cash flows from financing activities:    
Payments of long-term debt (42,226) (18,520)
Stock options exercised 931 794
Payments to noncontrolling interests holders (39) (5)
Excess tax benefit from stock option exercises 441  
Treasury stock acquired (8,312) (3,079)
Net cash used in financing activities (49,205) (20,810)
Net increase in cash and cash equivalents 59,118 24,326
Cash and cash equivalents, beginning of period 105,149 69,073
Cash and cash equivalents, end of period 164,267 93,399
Non cash investing activities – Accrued capital expenditures 615 198
Non cash investing activities – Loan receivable granted in connection with sale of real estate $ 475