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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified | 9 Months Ended
--- | ---
Sep. 30, 2012 | Sep. 30, 2011
Cash flows from operating activities |  |
Net income | $ 156,649 | $ 146,469
Adjustments to reconcile net income to net cash provided by operating activities: |  |
Gain on sale of fixed assets |  | (2,831)
Depreciation and amortization | 27,204 | 27,670
Amortization of intangible assets | 30,734 | 25,446
Amortization of debt issuance expenses | 1,109 | 947
Share-based compensation expense | 11,162 | 9,755
Deferred income taxes | 4,621 | 1,623
Excess tax benefit from share based compensation | (3,295) | (4,920)
Non-cash interest expense associated with forward starting swaps | 5,743 | 2,687
Changes in: |  |
Receivables | (8,199) | (18,721)
Inventories | 9,187 | (13,026)
Trade accounts payable | (2,797) | (1,355)
Accrued expenses | 15,929 | 12,688
Other - net | (7,549) | (10,823)
Net cash flows provided by operating activities | 240,498 | 175,609
Cash flows from investing activities |  |
Cash purchases of property, plant and equipment | (28,108) | (27,984)
Proceeds from disposal of fixed assets |  | 12,651
Acquisition of businesses, net of cash acquired | (69,021) | (446,069)
Other - net | (365) | (2,262)
Net cash flows used in investing activities | (97,494) | (463,664)
Cash flows from financing activities |  |
Borrowings under revolving facilities and credit facilities for acquisitions | 35,000 | 365,000
Borrowings under revolving facilities | 69,503 | 381,222
Borrowings under credit facilities |  | 1,883
Payments under revolving facilities, credit facilities and term loan | (130,395) | (462,944)
Debt issuance costs |  | (2,433)
Dividends paid | (47,552) | (40,458)
Proceeds from stock option exercises | 35,015 | 31,333
Excess tax benefit from stock-based compensation | 3,295 | 4,920
Purchase of common stock | (75,174) |
Unvested shares surrendered for tax withholding | (2,326) | (5,838)
Other | (1,240) |
Net cash flows (used in) provided by financing activities | (113,874) | 272,685
Effect of exchange rate changes on cash and cash equivalents | 1,114 | 695
Net increase (decrease) in cash | 30,244 | (14,675)
Cash and cash equivalents at beginning of year | 230,259 | 235,136
Cash and cash equivalents at end of period | 260,503 | 220,461
Cash paid for: |  |
Interest | 22,610 | 16,246
Income taxes | 62,053 | 46,749
Significant non-cash activities: |  |
Contingent consideration for acquisition | 8,370 | 2,707
Debt acquired with acquisition of business | $ 4,680 | $ 1,400

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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 Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: 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=6943989&loc=d3e3602-108585 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration