Consolidated Statement of Cash Flows Statement (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Cash Flows from Operating Activities:
Net income	$ 36,290	$ 60,360	$ 45,270
Adjustments to reconcile net income to net cash provided by operating activities, net of acquisition impact:
(Gain) loss on disposition of businesses and other assets	(280)	(10,380)	(8,510)
Depreciation	25,050	25,940	23,640
Amortization of intangible assets	19,820	14,530	14,100
Amortization of debt issue costs	2,490	2,910	2,960
Deferred income taxes	(8,330)	12,680	12,500
Non-cash compensation expense	9,280	3,510	2,180
Excess tax benefit from stock based compensation	(2,730)	(3,980)	(600)
(Gain) loss on extinguishment of debt	46,810	3,970	0
(Increase) decrease in receivables	(3,800)	(21,420)	(17,190)
(Increase) decrease in inventories	(48,010)	(16,840)	(12,820)
(Increase) decrease in prepaid expenses and other assets	620	(890)	(600)
Increase (decrease) in accounts payable and accrued liabilities	(3,700)	25,870	31,740
Other, net	(290)	(450)	2,290
Net cash provided by operating activities, net of acquisition impact	73,220	95,810	94,960
Cash Flows from Investing Activities:
Capital expenditures	(46,120)	(32,620)	(21,900)
Acquisition of businesses, net of cash acquired	(89,880)	(31,390)	(30,760)
Net proceeds from disposition of businesses and other assets	3,000	38,780	14,810
Net cash provided by (used for) investing activities	(133,000)	(25,230)	(37,850)
Cash Flows from Financing Activities:
Proceeds from sale of common stock in connection with the Company's equity offering, net of issuance costs	79,040	0	0
Proceeds from borrowings on term loan facilities	584,670	269,150	0
Repayments of borrowings on term loan facilities	(404,770)	(294,370)	(14,660)
Proceeds from borrowings on revolving credit facilities and accounts receivable facility	724,500	659,300	476,310
Repayments of borrowings on revolving credit facilities and accounts receivable facility	(706,500)	(659,300)	(482,360)
Retirement of senior secured notes	(250,000)	0	0
Senior secured notes redemption premium and debt financing fees	(42,150)	(6,890)	0
Distributions to noncontrolling interests	(1,260)	0	0
Shares surrendered upon vesting of options and restricted stock awards to cover tax obligations	(990)	(900)	(240)
Proceeds from exercise of stock options	6,170	1,000	130
Excess tax benefits from stock based compensation	2,730	3,980	600
Net cash used for financing activities	(8,560)	(28,030)	(20,220)
Increase (decrease) for the year	(68,340)	42,550	36,890
At beginning of year	88,920	46,370	9,480
At end of year	20,580	88,920	46,370
Supplemental disclosure of cash flow information:
Cash paid for interest	31,300	40,550	45,090
Cash paid for income taxes	$ 25,820	$ 15,710	$ 8,920