CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
CASH FLOWS FROM OPERATING ACTIVITES
Net earnings	$ 34,657	$ 18,673
Adjustments to reconcile net earnings to cash provided by operating activities:
Depreciation	8,776	7,850
Amortization expense (including deferred financing fees)	1,951	2,176
Unrealized foreign currency gains	(6,818)	(452)
Stock-based compensation	3,574	3,658
Other non-cash items, net	227	30
Changes in assets and liabilities, net of acquisition:
Customer receivables	9,248	446
Inventories	(5,081)	(10,325)
Accounts payable	(36,399)	3,174
Current and deferred income taxes	(11,437)	6,291
Prepaid and other current assets	(1,765)	(4,042)
Other current liabilities	3,192	(13,662)
Other noncurrent assets and liabilities	7,317	17,460
Cash provided by operating activities	7,442	31,277
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(12,340)	(17,741)
Purchase of business, net of cash acquired	0	(93,349)
Purchase of licenses	(330)	(315)
Cash used in investing activities	(12,670)	(111,405)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from revolving credit facility	170,000	608,000
Repayment of revolving credit facility	(154,000)	(515,000)
Payment of financing fees	0	(1,914)
Payment of dividends	(11,502)	(11,363)
Proceeds from the issuance of common stock	4,421	2,590
Purchase of common stock for treasury	(6,067)	(6,227)
Contingent purchase price payment	(5,000)	0
Excess tax benefit from the exercise of stock options and vesting of equity awards	979	210
Cash (used in) provided by financing activities	(1,169)	76,296
Effect of exchange rate changes on cash and cash equivalents	(2,282)	279
Decrease in cash and cash equivalents	(8,679)	(3,553)
Cash and cash equivalents at beginning of period	19,021	12,026
Cash and cash equivalents at end of period	$ 10,342	$ 8,473