Consolidated Statements of Cash Flows (USD $)
In Thousands
9 Months Ended
Sep. 30, 2011
Sep. 30, 2010
Operating activities  
Net income$ 82,108$ 69,443
Adjustments to reconcile net income to net cash provided by operating activities:  
Depreciation7,0716,732
Amortization1,2431,827
Share-based compensation6,1435,912
Excess tax benefits from share-based compensation(2,229)(1,271)
Equity earnings in unconsolidated investments(185)(117)
Other(3,892)(7,673)
Changes in operating assets and liabilities, net of effects of acquisitions:  
Receivables(55,941)(49,043)
Product inventories10,99955,482
Accounts payable(49,542)(55,586)
Other current assets and liabilities36,19939,536
Net cash provided by operating activities31,97465,242
Investing activities  
Acquisition of businesses, net of cash acquired(2,961)(4,872)
Purchase of property and equipment, net of sale proceeds(16,959)(6,600)
Other investments(177)0
Net cash used in investing activities(20,097)(11,472)
Financing activities  
Proceeds from revolving line of credit446,649370,639
Payments on revolving line of credit(376,649)(354,668)
Payments on long-term debt and other long-term liabilities(145)(36,160)
Payments of deferred acquisition consideration(500)(500)
Payments of deferred financing costs0(145)
Excess tax benefits from share-based compensation2,2291,271
Proceeds from stock issued under share-based compensation plans9,5064,717
Payments of cash dividends(19,798)(19,308)
Purchases of treasury stock(62,842)(1,534)
Net cash used in financing activities(1,550)(35,688)
Effect of exchange rate changes on cash and cash equivalents608(1,364)
Change in cash and cash equivalents10,93516,718
Cash and cash equivalents at beginning of period9,72115,843
Cash and cash equivalents at end of period$ 20,656$ 32,561