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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Nov. 30, 2017 | Nov. 30, 2016
Operating activities: |  |
Net income | $ 12,630 | $ 11,758
Adjustments to reconcile net income to net cash provided by operating activities: |  |
Depreciation and amortization | 1,917 | 1,620
Net gains on sales and disposals of property and equipment | (45) | (54)
Deferred income taxes | 261 | (405)
Stock-based compensation | 1,777 | 1,622
Unrealized foreign currency exchange losses | 150 | 1,075
Provision for bad debts | (21) | (120)
Changes in assets and liabilities: |  |
Trade accounts receivable | 217 | 6,357
Inventories | (1,459) | (2,876)
Other assets | 3,219 | 1,070
Accounts payable and accrued liabilities | (3,994) | 203
Accrued payroll and related expenses | (1,500) | (7,194)
Income taxes payable | (492) | 2,619
Other long-term liabilities | (81) | (45)
Net cash provided by operating activities | 12,579 | 15,630
Investing activities: |  |
Purchases of property and equipment | (1,009) | (11,603)
Proceeds from sales of property and equipment | 116 | 162
Purchase of intangible assets | (175) |
Purchases of short-term investments | (103) | (16,997)
Maturities of short-term investments |  | 4,548
Net cash used in investing activities | (1,171) | (23,890)
Financing activities: |  |
Treasury stock purchases | (3,893) | (12,156)
Dividends paid | (6,888) | (5,998)
Proceeds from issuance of common stock | 215 | 197
Proceeds from issuance of long-term senior notes | 20,000 |
Net (repayments) proceeds from revolving credit facility | (10,000) | 12,354
Shares withheld to cover taxes upon conversions of equity awards | (1,763) | (1,692)
Net cash used in financing activities | (2,329) | (7,295)
Effect of exchange rate changes on cash and cash equivalents | 771 | (1,854)
Net increase (decrease) in cash and cash equivalents | 9,850 | (17,409)
Cash and cash equivalents at beginning of period | 37,082 | 50,891
Cash and cash equivalents at end of period | $ 46,932 | $ 33,482

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- Definition Amount of expense related to write-down of receivables to the amount expected to be collected. Includes, but is not limited to, accounts receivable and notes receivable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=82913815&loc=SL49130534-203044 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.5) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=82913847&loc=SL49130543-203045 + Details
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- Definition The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 + Details
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