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v3.8.0.1

Condensed Consolidated Statements Of Cash Flows - USD ($) $ in Thousands | 9 Months Ended
--- | ---
Sep. 30, 2017 | Sep. 30, 2016
Cash Flows from Operating Activities: |  |
Net income | $ 224,979 | $ 169,683
Adjustments to reconcile net income to net cash provided by operating activities: |  |
Depreciation and amortization | 61,620 | 57,977
Impairment charge |  | 2,228
Provision for uncollectible accounts | 1,396 | 842
(Provision for) benefit of deferred income taxes | (438) | 6,243
Share-based compensation expense | 17,762 | 15,021
Other | 516 | 1,887
Tax benefit from share-based compensation arrangements (Note 2) |  | (10,225)
Changes in assets and liabilities: |  |
Accounts receivable | (18,724) | (16,647)
Inventories | (22,966) | (2,503)
Other assets and liabilities | (10,734) | 12,380
Accounts payable | (3,540) | (2,496)
Deferred revenue | 2,279 | 3,798
Net cash provided by operating activities | 252,150 | 238,188
Cash Flows from Investing Activities: |  |
Purchases of property and equipment | (54,370) | (49,956)
Purchase of marketable securities | (269,798) | (178,829)
Proceeds from the sale and maturities of marketable securities | 224,816 | 152,277
Acquisitions of intangible assets | (320) |
Acquisitions of a business, net of cash acquired | (14,529) |
Net cash used by investing activities | (114,201) | (76,508)
Cash Flows from Financing Activities: |  |
Borrowings (repayments) on revolving credit facilities, net | 75,250 | (85,000)
Debt issue costs |  | (57)
Repurchases of common stock | (228,693) | (91,562)
Proceeds from exercises of stock options and employee stock purchase plans | 31,314 | 28,815
Payment of acquisition-related contingent consideration |  | (3,633)
Shares withheld for statutory tax withholding on restricted stock (Note 2) | (7,829) | (3,732)
Tax benefit from share-based compensation arrangements (Note 2) |  | 10,225
Net cash used by financing activities | (129,958) | (144,944)
Net effect of changes in exchange rates on cash | 6,127 | 4,342
Net increase in cash and cash equivalents | 14,118 | 21,078
Cash and cash equivalents at beginning of period | 154,901 | 128,994
Cash and cash equivalents at end of period | $ 169,019 | $ 150,072

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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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