CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
CASH FLOWS FROM OPERATING ACTIVITES
Net income	$ 20,312	$ 22,177
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation	7,307	8,168
Amortization of intangible assets and deferred financing fees	821	1,042
Loss on disposal of fixed assets	8	43
Write off of deferred financing fees	477
Unrealized foreign currency (gain) loss	(56)	1,948
Stock based compensation	5,358	4,872
Other non-cash items	15	15
Changes in assets and liabilities:
Customer receivables	22,029	4,144
Inventories	(6,711)	(5,327)
Accounts payable	(17,470)	(16,371)
Current and deferred income taxes	(11,197)	3,238
Other current assets	(2,178)	(517)
Other current liabilities	(11,008)	(14,980)
Other noncurrent assets and liabilities	(1,225)	4,322
Cash provided by operating activities	6,482	12,774
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(6,473)	(7,120)
Purchase of a business, net of cash acquired	(5,968)
Purchase of intangibles	(175)
Cash used in investing activities	(12,616)	(7,120)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from revolving credit facility	420,000	173,000
Repayment of revolving credit facility	(414,000)	(188,000)
Deferred financing fees	(2,827)
Payment of dividends	(9,323)	(7,397)
Proceeds from the issuance of common stock	413	12,867
Purchase of common stock for treasury	(2,622)	(13,669)
Tax benefit from the exercise of stock options and vesting of equity awards	(705)	1,438
Cash used in financing activities	(9,064)	(21,761)
Effect of exchange rate changes on cash and cash equivalents	(1,592)	2,653
Decrease in cash and cash equivalents	(16,790)	(13,454)
Cash and cash equivalents at beginning of period	28,263	26,935
Cash and cash equivalents at end of period	$ 11,473	$ 13,481