Condensed Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Cash flows - operating activities:
Net income including noncontrolling interests	$ 79,546	$ 82,842
Depreciation and amortization	17,942	17,956
Amortization of identifiable intangible assets	18,951	19,005
Deferred income taxes	1,406	4,648
Loss on sale of subsidiary	0	608
Excess tax benefits from share-based compensation	(1,038)	(5,627)
Equity income from unconsolidated entities	(1,034)	(836)
Other non-cash items	5,703	3,185
Distributions from unconsolidated entities	3,316	572
Changes in operating assets and liabilities	(130,858)	(82,713)
Net cash (used in) provided by operating activities	(6,066)	39,640
Cash flows - investing activities:
Payments for acquisitions of businesses, net of cash acquired	(1,176)	0
Proceeds from sale of subsidiary	0	1,108
Proceeds from sale of property, plant and equipment	2,569	2,630
Purchase of property, plant and equipment	(15,793)	(16,579)
Investments in and advances to unconsolidated entities and joint ventures	0	(1,590)
Net cash used in investing activities	(14,400)	(14,431)
Cash flows - financing activities:
Repayments of long-term debt	(8,758)	(8,756)
Repayments of capital lease obligations	(1,330)	(840)
Dividends paid to stockholders	(10,054)	(10,743)
Repurchase of common stock	(21,148)	(18,332)
Proceeds from exercise of stock options	1,368	4,533
Payments to satisfy minimum tax withholding	(3,790)	(1,481)
Issuance of common stock under employee stock purchase plan	2,051	1,753
Payments for contingent consideration arrangements	(403)	0
Distributions to noncontrolling interests	(9,750)	(1,400)
Excess tax benefits from share-based compensation	1,038	5,627
Net cash used in financing activities	(50,776)	(29,639)
Effect of exchange rate changes on cash and cash equivalents	35	1,736
Decrease in cash and cash equivalents	(71,207)	(2,694)
Cash and cash equivalents at beginning of year	432,056	439,813
Cash and cash equivalents at end of period	360,849	437,119
Cash paid for:
Interest	3,682	3,388
Income taxes	47,899	46,298
Non-cash financing activities:
Assets acquired under capital lease obligations	$ 950	$ 93