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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
6 Months Ended
Jan. 31, 2020
Jan. 31, 2019
Operating activities:    
Net income $ 71,051 $ 59,864
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation and amortization 11,672 11,909
Stock-based compensation expense 5,384 7,805
Deferred income taxes 1,272 4,423
Adjustments, Noncash Items, to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities 1,664 1,279
Changes in operating assets and liabilities (net of effects of business acquisitions/divestitures):    
Accounts receivable 6,209 2,562
Inventories (1,311) (6,602)
Prepaid expenses and other assets (2,621) (2,310)
Accounts payable and accrued liabilities (39,777) (35,334)
Income taxes (436) 592
Net cash provided by operating activities 53,107 44,188
Investing activities:    
Purchases of property, plant and equipment (13,100) (12,127)
Other (3,406) (452)
Net cash used in investing activities (16,506) (12,579)
Financing activities:    
Payments of Dividends (23,136) (22,263)
Proceeds from exercise of stock options 4,686 18,498
Payments Related to Tax Withholding for Share-based Compensation (7,733) (3,362)
Proceeds from borrowing on credit facilities 0 5,737
Repayment of borrowing on credit facilities 0 (5,688)
Other 134 (2,973)
Net cash used in financing activities (26,049) (10,051)
Effect of exchange rate changes on cash 179 (776)
Net increase in cash and cash equivalents 10,731 20,782
Cash and cash equivalents, beginning of period 279,072 181,427
Cash and cash equivalents, end of period $ 289,803 $ 202,209