CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
CASH FLOWS FROM OPERATING ACTIVITES
Net earnings	$ 52,518	$ 34,270
Adjustments to reconcile net earnings to cash provided by operating activities:
Depreciation	12,780	11,740
Amortization expense (including deferred financing fees)	2,927	3,095
Unrealized foreign currency gains	(7,173)	(3,680)
Stock-based compensation	5,650	5,869
Other non-cash items, net	392	127
Changes in assets and liabilities, net of acquisition:
Customer receivables	19,879	9,824
Inventories	(10,203)	(18,373)
Accounts payable	(44,481)	5,046
Current and deferred income taxes	(5,941)	10,393
Prepaid and other current assets	(1,417)	(3,994)
Other current liabilities	7,574	(10,153)
Other noncurrent assets and liabilities	5,634	20,552
Cash provided by operating activities	38,139	64,716
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(19,507)	(31,992)
Purchase of business, net of cash acquired	0	(93,349)
Purchase of licenses	(330)	(315)
Cash used in investing activities	(19,837)	(125,656)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from revolving credit facility	230,000	692,000
Repayment of revolving credit facility	(230,500)	(603,500)
Payment of financing fees	0	(1,930)
Payment of dividends	(17,194)	(17,015)
Proceeds from the issuance of common stock	5,247	2,788
Purchase of common stock for treasury	(7,478)	(6,412)
Contingent purchase price payment	(5,000)	0
Excess tax benefit from the exercise of stock options and vesting of equity awards	940	210
Cash (used in) provided by financing activities	(23,985)	66,141
Effect of exchange rate changes on cash and cash equivalents	(3,581)	(1,527)
(Decrease) increase in cash and cash equivalents	(9,264)	3,674
Cash and cash equivalents at beginning of period	19,021	12,026
Cash and cash equivalents at end of period	$ 9,757	$ 15,700