Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Apr. 01, 2012
OPERATING ACTIVITIES
Net income	$ 7,908	$ 8,585
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation	4,009	4,008
Amortization	758	964
Compensation expense of share-based plans	1,028	1,195
Tax effect of share-based compensation	(285)	479
(Loss) gain on property, plant and equipment	(66)	2
Changes in operating assets and liabilities, net of effects from business acquisitions:
Trade accounts receivable	(2,455)	3,539
Inventories	(6,461)	(2,179)
Prepaid expenses and other assets	(827)	(5,549)
Accounts payable, accrued expenses and other liabilities	2,198	(14,011)
Net cash provided by (used in) operating activities	5,807	(2,967)
INVESTING ACTIVITIES
Additions to property, plant and equipment	(4,707)	(4,122)
Proceeds from the sale of property, plant and equipment	75	15
Net cash used in investing activities	(4,632)	(4,107)
FINANCING ACTIVITIES
Proceeds from long-term debt	33,598	41,123
Payments of long-term debt	(37,655)	(47,806)
Dividends paid	(670)	(666)
Proceeds from the exercise of stock options	1,368	73
Tax effect of share-based compensation	285	(479)
Net cash used in financing activities	(3,074)	(7,755)
Effect of exchange rate changes on cash and cash equivalents	(2,207)	1,265
DECREASE IN CASH AND CASH EQUIVALENTS	(4,105)	(13,564)
Cash and cash equivalents at beginning of period	61,738	54,855
CASH AND CASH EQUIVALENTS AT END OF PERIOD	57,633	41,291
Supplemental Cash Flow Information:
Income taxes	1,462	4,839
Interest	$ 382	$ 1,039