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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 9 Months Ended
--- | ---
Jun. 30, 2019 | Jun. 30, 2018
Cash flows from operating activities: |  |
Net income | $ 137,540 | $ 93,769
Adjustments to reconcile net income to net cash provided by operating activities: |  |
Depreciation and amortization | 23,734 | 22,329
Share-based compensation | 61,931 | 54,631
Deferred income taxes | 247 | (3,643)
Net (gain) loss on marketable securities | 635 | (635)
Provision for doubtful accounts, net | 509 | 541
Net loss on sales of property and equipment | 22 | 28
Changes in operating assets and liabilities: |  |
Accounts receivable | (53,288) | 2,922
Prepaid expenses and other assets | (5,369) | (3,587)
Accounts payable | 631 | 2,623
Accrued compensation and employee benefits | 4,217 | (1,977)
Other liabilities | (6,164) | (21)
Deferred revenue | 291 | (3,891)
Net cash provided by operating activities | 164,936 | 163,089
Cash flows from investing activities: |  |
Purchases of property and equipment | (18,170) | (24,220)
Proceeds from sales of marketable securities | 3,228 | 3,005
Purchases of marketable securities | (5,858) | (5,509)
Net cash used in investing activities | (20,800) | (26,724)
Cash flows from financing activities: |  |
Proceeds from revolving line of credit | 167,000 | 371,000
Payments on revolving line of credit | (109,000) | (480,000)
Proceeds from issuance of senior notes | 0 | 400,000
Payments on senior notes | 0 | (131,000)
Payments on debt issuance costs | 0 | (7,869)
Proceeds from issuance of treasury stock under employee stock plans | 16,073 | 2,492
Taxes paid related to net share settlement of equity awards | (51,208) | (42,872)
Repurchases of common stock | (178,926) | (229,540)
Net cash used in financing activities | (156,061) | (117,789)
Effect of exchange rate changes on cash | 710 | (4,265)
Increase (decrease) in cash and cash equivalents | (11,215) | 14,311
Cash and cash equivalents, beginning of period | 90,023 | 105,618
Cash and cash equivalents, end of period | 78,808 | 119,929
Supplemental disclosures of cash flow information: |  |
Cash paid for income taxes, net of refunds | 12,058 | 9,975
Cash paid for interest | 33,401 | 20,501
Supplemental disclosures of non-cash investing and financing activities: |  |
Purchase of property and equipment included in accounts payable | 690 | 5,282
Unsettled repurchases of common stock | 0 | 7,601
Capital lease obligations incurred | $ 6,416 | $ 0

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- Definition The cash inflow from a borrowing with the highest claim on the assets of the entity in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle, if longer). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3255-108585 + Details
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- Definition Amount of cash inflow from issuance of shares under share-based payment arrangement. Includes, but is not limited to, option exercised. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=116856206&loc=SL79508275-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3255-108585 + 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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3255-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -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 cash inflow associated with the aggregate amount received by the entity through sale or maturity of marketable securities (held-to-maturity or available-for-sale) during the period. + References No definition available. + Details
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- Definition Amount of expense (reversal of expense) for expected credit loss on accounts receivable. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919249-210447 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(5)) -URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227 + 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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3291-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -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 cash outflow for a long-term debt where the holder has highest claim on the entity's asset in case of bankruptcy or liquidation during the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3291-108585 + Details
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- Definition Amount of noncash expense for share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585 + Details
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