CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
CASH FLOW FROM OPERATING ACTIVITIES:
Net income	$ 27,157	$ 26,981
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation	6,077	4,705
Amortization of intangible assets	9,223	5,787
Compensation expense for restricted stock	1,732	1,440
Tax benefit related to vesting of restricted stock	(742)	(540)
Deferred income taxes	(1,221)	(3,455)
Changes in operating assets and liabilities, net of assets and liabilities acquired in business acquisitions:
Trade accounts receivable	(30,785)	2,705
Inventories	2,632	(449)
Prepaid expenses and other assets	(2,003)	2,158
Accounts payable and accrued expenses	7,697	(311)
Net cash provided by operating activities	19,767	39,021
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchase of property and equipment	(4,700)	(4,505)
Purchase of long-term investment	0	(68)
Sale of long-term investment	1,688	0
Acquisitions of businesses, net of cash acquired	(301,097)	(41,584)
Net cash used in investing activities	(304,109)	(46,157)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from debt	541,788	241,498
Principal payments on revolving line of credit and other long-term debt	(244,509)	(232,560)
Dividends paid	(45)	(45)
Purchase of treasury stock	(6,771)	(304)
Tax benefit related to vesting of restricted stock	742	540
Net cash provided by financing activities	291,205	9,129
EFFECT OF FOREIGN CURRENCY ON CASH	(239)	(354)
NET CHANGE IN CASH AND CASH EQUIVALENTS	6,624	1,639
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	5,469	10,455
CASH AND CASH EQUIVALENTS AT END OF PERIOD	$ 12,093	$ 12,094