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Consolidated Condensed Statements Of Cash Flows (USD $)
In Thousands, unless otherwise specified
 6 Months Ended
Jan. 31, 2014
Jan. 31, 2013
Cash flows from operating activities:    
Net income (loss) $ (14,237) $ (74)
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation and amortization 70,360 65,097
Cost of real estate sales 10,104 19,900
Stock-based compensation expense 7,054 6,631
Deferred income taxes, net (8,727) (485)
Other non-cash income, net (1,501) (4,060)
Changes in assets and liabilities:    
Trade receivables, net 22,396 12,677
Inventories, net (4,004) (3,822)
Investments in real estate (570) (1,410)
Accounts payable and accrued liabilities 100,724 87,567
Other assets and liabilities, net (6,978) (6,377)
Net cash provided by operating activities 174,621 175,644
Cash flows from investing activities:    
Capital expenditures (93,771) (58,287)
Acquisition of businesses 0 (19,958)
Other investing activities, net 149 246
Net cash used in investing activities (93,622) (77,999)
Proceeds from Issuance of Other Long-term Debt 0 96,000
Repayments of Long-term Debt 0 (96,444)
Cash flows from financing activities:    
Dividends paid (14,986) (13,458)
Other financing activities, net 621 6,722
Net cash used in financing activities (14,365) (7,180)
Effect of exchange rate changes on cash and cash equivalents 38 61
Net decrease in cash and cash equivalents 66,672 90,526
Cash and cash equivalents:    
Beginning of period 138,604 46,053
End of period $ 205,276 $ 136,579