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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2015
Cash flows from operating activities: |  |  |
Net income | $ 128,256 | $ 109,448 | $ 86,502
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |
Depreciation and amortization | 36,214 | 31,633 | 33,889
Share-based compensation | 61,222 | 55,509 | 45,308
Deferred income taxes | (6,049) | (26,007) | (5,934)
Tax effect from share-based payment arrangements | 0 | 24,184 | 12,530
Provision of doubtful accounts | 1,640 | 2,011 | 0
Net loss on sales of property and equipment | 14 | 6 | 2,210
Changes in operating assets and liabilities: |  |  |
Accounts receivable | (1,265) | (18,225) | (4,602)
Prepaid expenses and other assets | (7,115) | 12,848 | (15,462)
Accounts payable | (2,027) | 564 | (3,672)
Accrued compensation and employee benefits | 6,464 | 17,079 | (1,506)
Other liabilities | (683) | (4,282) | 4,113
Deferred revenue | 8,973 | 5,500 | (6,604)
Net cash provided by operating activities | 225,644 | 210,268 | 146,772
Cash flows from investing activities: |  |  |
Purchases of property and equipment | (19,828) | (21,969) | (24,999)
Cash paid for acquisitions, net of cash acquired | 0 | (5,683) | (56,992)
Distribution from (purchase of) cost method investees | (777) | 37 | 75
Net cash used in investing activities | (20,605) | (27,615) | (81,916)
Cash flows from financing activities: |  |  |
Proceeds from revolving line of credit | 190,000 | 122,000 | 249,000
Payments on revolving line of credit | (84,000) | (99,000) | (116,000)
Payments on senior notes | (72,000) | (60,000) | (71,000)
Proceeds from issuance of treasury stock under employee stock plans | 14,474 | 17,828 | 18,258
Taxes paid related to net share settlement of equity awards | (40,232) | (29,955) | (19,461)
Dividends paid | (1,238) | (2,489) | (2,508)
Repurchases of common stock | (187,629) | (138,399) | (130,719)
Net cash used in financing activities | (180,625) | (190,015) | (72,430)
Effect of exchange rate changes on cash | 5,278 | (2,832) | (11,381)
Increase (decrease) in cash and cash equivalents | 29,692 | (10,194) | (18,955)
Cash and cash equivalents, beginning of year | 75,926 | 86,120 | 105,075
Cash and cash equivalents, end of year | 105,618 | 75,926 | 86,120
Supplemental disclosures of cash flow information: |  |  |
Cash paid for income taxes, net of refunds of $3,757, $11,363 and $1,592 during the years ended September 30, 2017, 2016 and 2015, respectively | 31,315 | 10,855 | 33,752
Cash paid for interest | 26,083 | 26,884 | 30,470
Supplemental disclosures of non-cash investing and financing activities: |  |  |
Unsettled Repurchases Of Common Stock | 5,661 | 0 | 0
Purchase of property and equipment included in accounts payable | $ 1,751 | $ 3,287 | $ 436

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- Definition Amount of cash inflow from issuance of shares under share-based compensation arrangement. Issuance includes, but is not limited to, exercise of stock options and similar instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3255-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=96867065&loc=SL79508275-113901 + Details
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- Definition Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3255-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(f)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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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 Amount of cash outflow for payment of an obligation from a lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3291-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(f)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + 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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- References No definition available. + Details
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