Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jul. 01, 2012	Jul. 03, 2011
Cash Flows from Operating Activities
Net income	$ 16,995	$ 18,453
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation expense	30,841	30,096
Amortization of intangibles	208	226
Deferred income taxes	2,196	160
Loss on sale of property, plant and equipment	392	451
Amortization of debt costs	1,154	1,141
Amortization of deferred gain related to terminated interest rate agreements	(615)	(609)
Stock compensation expense	1,286	1,347
Increase in current assets less current liabilities	(14,062)	(24,493)
Increase in other noncurrent assets	(5,231)	(6,925)
Decrease in other noncurrent liabilities	(16,336)	(1,279)
Other	0	(8)
Total adjustments	(167)	107
Net cash provided by operating activities	16,828	18,560
Cash Flows from Investing Activities
Additions to property, plant and equipment	(25,483)	(32,187)
Proceeds from the sale of property, plant and equipment	153	53
Change in restricted cash	3,000	500
Net cash used in investing activities	(22,330)	(31,634)
Cash Flows from Financing Activities
Cash dividends paid	(4,610)	(4,599)
Principal payments on capital lease obligations	(2,260)	(1,904)
Other	(58)	(126)
Net cash used in financing activities	(6,928)	(6,629)
Net decrease in cash	(12,430)	(19,703)
Cash at beginning of period	90,758	45,872
Cash at end of period	78,328	26,169
Significant non-cash investing and financing activities:
Issuance of Class B Common Stock in connection with stock award	1,421	1,327
Capital lease obligations incurred	$ 209	$ 18,644