CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Cash flows from operating activities
Net income	$ 68,130	$ 65,954
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	9,067	8,580
Amortization of intangible assets	10,890	9,930
Amortization of debt issuance costs	378	434
Share-based compensation expense	6,442	6,882
Deferred income taxes	2,950	1,000
Excess tax benefit from share-based compensation	0	(3,220)
Non-cash interest expense associated with forward starting swaps	1,724	1,772
Changes in (net of effect from acquisitions):
Receivables	(19,267)	(18,039)
Inventories	(270)	(11,215)
Other current assets	(6,597)	(4,591)
Trade accounts payable	6,451	6,857
Accrued expenses	(6,641)	(14,230)
Other — net	(2,892)	(710)
Net cash flows provided by operating activities	70,365	49,404
Cash flows from investing activities
Additions of property, plant and equipment	(8,650)	(10,077)
Acquisition of businesses, net of cash acquired	221,556	0
Other — net	91	(48)
Net cash flows used in investing activities	(230,115)	(10,125)
Cash flows from financing activities
Borrowings under revolving facilities	275,391	55,000
Payments under revolving facilities	(20,994)	(77)
Dividends paid	(24,662)	(22,151)
Proceeds from stock option exercises	8,258	9,185
Excess tax benefit from share-based compensation	0	3,220
Purchase of common stock	(46,864)	(62,132)
Shares surrendered for tax withholding	(4,717)	(3,107)
Net cash flows provided by (used in) financing activities	186,412	(20,062)
Effect of exchange rate changes on cash and cash equivalents	3,765	(33,858)
Net increase (decrease) in cash	30,427	(14,641)
Cash and cash equivalents at beginning of year	328,018	509,137
Cash and cash equivalents at end of period	358,445	494,496
Cash paid for:
Interest	965	791
Income taxes	$ 9,516	$ 10,411