Consolidated Statement of Cash Flows Statement (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Cash Flows from Operating Activities:
Net Income	$ 19,380	$ 14,040
Adjustments to reconcile net income to net cash used for operating activities, net of acquisition impact:
Loss on dispositions of property and equipment	70	10
Depreciation	8,030	7,050
Amortization of intangible assets	5,480	5,080
Amortization of debt issue costs	480	440
Deferred income taxes	(2,820)	(1,640)
Non-cash compensation expense	2,280	2,680
Excess tax benefit from stock based compensation	(760)	(910)
Increase in receivables	(44,960)	(38,280)
(Increase) decrease in inventories	1,800	(3,690)
(Increase) decrease in prepaid expenses and other assets	100	(3,560)
Decrease in accounts payable and accrued liabilities	(13,910)	(18,710)
Other, net	160	(440)
Net cash used for operating activities, net of acquisition impact	(24,670)	(37,930)
Cash Flows from Investing Activities:
Capital expenditures	(9,030)	(13,950)
Acquisition of businesses, net of cash acquired	0	(28,230)
Net proceeds from disposition of assets	240	520
Net cash used for investing activities	(8,790)	(41,660)
Cash Flows from Financing Activities:
Proceeds from borrowings on term loan facilities	46,750	54,110
Repayments of borrowings on term loan facilities	(46,340)	(48,840)
Proceeds from borrowings on revolving credit facilities and accounts receivable facility	331,120	268,800
Repayments of borrowings on revolving credit facilities and accounts receivable facility	(239,900)	(190,800)
Distributions to Noncontrolling Interest	(580)	(550)
Payment for noncontrolling interests	(51,000)	0
Shares surrendered upon vesting of options and restricted stock awards to cover tax obligations	(2,670)	(3,530)
Proceeds from exercise of stock options	140	170
Excess tax benefits from stock based compensation	760	910
Net cash provided by financing activities	38,280	80,270
Increase for the period	4,820	680
At beginning of period	27,000	20,580
At end of period	31,820	21,260
Supplemental disclosure of cash flow information:
Cash paid for interest	3,010	3,900
Cash paid for taxes	$ 2,660	$ 7,280