CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
CASH FLOW FROM OPERATING ACTIVITIES:
Net income	$ 11,618	$ 13,232
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation	2,984	2,248
Amortization of intangible assets	4,570	2,642
Compensation expense for restricted stock	685	724
Tax benefit related to vesting of restricted stock	(637)	(373)
Deferred income taxes	(2,804)	(2,820)
Changes in operating assets and liabilities, net of assets and liabilities acquired in business acquisitions:
Trade accounts receivable	(8,181)	(14,424)
Inventories	1,041	1,703
Prepaid expenses and other assets	925	1,948
Accounts payable and accrued expenses	10,449	12,052
Net cash provided by operating activities	20,650	16,932
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchase of property and equipment	(1,684)	(2,360)
Sale of long-term investment	(1,688)	0
Acquisitions of businesses, net of cash acquired	(287,043)	0
Net cash used in investing activities	(290,415)	(2,360)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from debt	380,439	94,727
Principal payments on revolving line of credit and other long-term debt	(104,454)	(112,833)
Dividends paid	(23)	(23)
Tax benefit related to vesting of restricted stock	637	373
Net cash (used in) provided by financing activities	276,599	(17,756)
EFFECT OF FOREIGN CURRENCY ON CASH	(172)	(36)
NET CHANGE IN CASH AND CASH EQUIVALENTS	6,662	(3,220)
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	5,469	10,455
CASH AND CASH EQUIVALENTS AT END OF PERIOD	$ 12,131	$ 7,235