Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 29, 2012	Dec. 31, 2011	Jan. 01, 2011
OPERATING ACTIVITIES
Net income	$ 75,332	$ 87,024	$ 78,663
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	25,344	25,641	26,980
Amortization of intangibles	6,089	6,611	5,025
Impairment of assets	549	2,320	2,988
Provision for bad debts	242	444	353
Non-cash inventory charge	567	4,145
Pension settlement losses	5,348
Impairment and equity in net loss of unconsolidated affiliate	7,334
(Gain) loss on sale of property, plant and equipment	(1,443)	183	(615)
Stock-based compensation	7,348	5,805	5,243
Excess tax benefit on share-based compensation	(2,728)	(4,220)	(1,617)
Deferred income taxes	(2,661)	(1,363)	7,784
Changes in operating assets and liabilities:
Accounts receivable	(1,587)	4,768	(12,804)
Inventories	5,439	2,612	(15,147)
Accounts payable	5,353	(5,272)	(1,800)
Accrued expenses (including post-retirement)	(9,570)	(421)	(13,645)
Accrued payroll and severance	(4,387)	(3,226)	2,384
Accrued taxes	(357)	(6,057)	14,878
Prepaid expenses and other	(42)	1,756	5,399
Net cash provided by operating activities	116,170	120,750	104,069
INVESTING ACTIVITIES
Acquisitions of businesses, net of cash acquired	(34,016)	(11,077)	(48,292)
Purchases of short-term investments	(4,616)	(14,228)
Proceeds from maturities of short-term investments	17,805
Investments in unconsolidated affiliate	(10,000)	(6,000)
Loan to unconsolidated affiliate	(2,000)
Purchases of property, plant and equipment	(22,529)	(17,555)	(22,433)
Proceeds from sale of property, plant and equipment	3,664	217	4,997
Net cash used in investing activities	(51,692)	(48,643)	(65,728)
FINANCING ACTIVITIES
Proceeds from debt	23,251	110,000	39,345
Payments of term debt		(49,000)	(8,000)
Payments of revolving credit facility	(25,032)	(50,000)	(20,624)
Proceeds from exercise of stock options	16,367	23,036	18,496
Debt issuance costs		(716)
Cash dividends paid	(16,564)	(14,508)	(3,248)
Excess tax benefit on share-based compensation	2,728	4,220	1,617
Purchases of common stock		(37,092)	(25,377)
Net cash provided by (used in) financing activities	750	(14,060)	2,209
Effect of exchange rate changes on cash and cash equivalents	6,160	(3,751)	(1,184)
Increase in cash and cash equivalents	71,388	54,296	39,366
Cash and cash equivalents at beginning of year	164,016	109,720	70,354
Cash and cash equivalents at end of year	$ 235,404	$ 164,016	$ 109,720