CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
CASH FLOWS FROM OPERATING ACTIVITIES:
NET CASH PROVIDED BY OPERATING ACTIVITIES	$ 27,931	$ 18,770
CASH FLOWS FROM INVESTING ACTIVITIES:
Cash paid for business acquisitions, net of cash acquired	(123,649)	(302)
Purchase of property and equipment	(11,710)	(19,417)
Internally developed software costs	(4,620)	(3,114)
Cash proceeds from sale of assets	108	209
Net cash used in investing activities	(139,871)	(22,624)
CASH FLOWS FROM FINANCING ACTIVITIES:
Debt issuance costs	(1,644)	(837)
Proceeds from borrowings of long-term debt	75,000
Repayment of long-term debt and other long-term obligations	(5,357)	(4,285)
Proceeds from revolver borrowings	23,000
Repayment of revolver borrowings	(5,000)
Payment of acquisition-related liabilities	(29)	(4,957)
Excess tax benefit related to share-based compensation	390	176
Common stock repurchases	(4,017)	(3,627)
Cash dividends paid	(6,629)	(6,334)
Proceeds from exercise of stock options	1,128	6,802
Net cash provided by (used in) financing activities	76,842	(13,062)
Effect of exchange rate changes on cash	(212)	1,570
NET DECREASE IN CASH AND CASH EQUIVALENTS	(35,310)	(15,346)
CASH AND CASH EQUIVALENTS, BEGINNING OF YEAR	54,226	40,336
CASH AND CASH EQUIVALENTS, END OF PERIOD	18,916	24,990
Supplemental disclosure of cash flow information:
Cash paid for interest	7,718	7,047
Cash (recovered) paid for income taxes, net	(1,643)	6,088
Non-cash investing and financing transactions:
Property, equipment, and leasehold improvements accrued in accounts payable	1,651	2,750
Capital expenditures funded by capital lease borrowings	1,583	431
Capital leases assumed	9,061
Dividends declared	$ 3,420	3,239
Acquisition-related liabilities		$ 976