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Condensed Consolidated Statements Of Cash Flows (USD $) In Thousands	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Cash flows from operating activities:
Net income	$ 63,394	$ 53,682
Adjustments to reconcile net income to net cash (used in) provided by operating activities:
Depreciation and amortization	5,457	5,148
Share-based compensation	2,986	2,907
Provision for doubtful accounts	410	1,816
Loss (gain) on sale of property and equipment	416	(418)
Deferred income tax provision	1,704	1,216
Non-cash contribution for 401(k) plans	1,718	489
Excess tax benefits from share-based compensation	(880)	(2,088)
Changes in operating assets and liabilities, net of effects of acquisitions:
Accounts receivable	(104,798)	(120,494)
Inventories	(181,808)	(109,173)
Accounts payable and other liabilities	169,220	221,543
Other, net	(27)	2,202
Net cash (used in) provided by operating activities	(42,208)	56,830
Cash flows from investing activities:
Business acquisitions, net of cash acquired	(35,695)	(2,406)
Capital expenditures	(5,730)	(3,839)
Proceeds from sale of property and equipment	374	2,073
Net cash used in investing activities	(41,051)	(4,172)
Cash flows from financing activities:
Dividends on Common and Class B common stock	(35,707)	(32,338)
Return of capital contribution to noncontrolling interest	(32,000)
Distributions to noncontrolling interest	(15,824)	(3,115)
Costs related to amendment of revolving credit agreement	(38)
Net repayments of other long-term obligations	(31)	(90)
Excess tax benefits from share-based compensation	880	2,088
Net proceeds from issuances of common stock	3,108	3,224
Net proceeds under revolving credit agreements	55,000	7,237
Net cash used in financing activities	(24,612)	(22,994)
Net (decrease) increase in cash and cash equivalents	(107,871)	29,664
Cash and cash equivalents at beginning of period	126,498	58,093
Cash and cash equivalents at end of period	18,627	87,757
Supplemental cash flow information:
Net assets of locations contributed to joint venture	$ 14,769

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