Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 28, 2013	Dec. 29, 2012
Current Assets
Cash and cash equivalents	$ 63,876	$ 27,120
Short-term investments	292	227
Accounts receivable, gross	12,268	33,510
Allowance for doubtful accounts	(208)	(633)
Accounts receivable, net	12,060	32,877
Inventories	17,900	38,020
Deferred income taxes	2,631	3,417
Other current assets	2,766	8,072
Total Current Assets	99,525	109,733
Property, plant and equipment, gross	10,079	112,901
Accumulated depreciation	(5,750)	(98,525)
Property, Plant and Equipment, Net	4,329	14,376
Goodwill	15,279	15,279
Intangibles, Net	7,828	8,606
Deferred Income Taxes	4,114	11,570
Other Assets	1,031	1,775
Total Assets	132,106	161,339
Current Liabilities
Accounts payable, accrued expenses and other liabilities	5,853	26,399
Line of credit	15,000	15,000
Accrued compensation and related taxes	5,378	8,132
Retirement plan obligations	2,360	2,731
Income taxes payable	211	567
Total Current Liabilities	28,802	52,829
Retirement Plan Obligations	18,095	19,808
Other Long-Term Liabilities	1,157	3,624
Commitments and Contingencies (Note L)
Total Liabilities	48,054	76,261
Shareholders' Equity
Additional paid-in capital	36,073	32,309
Retained earnings	95,155	100,666
Accumulated other comprehensive loss	(16,073)	(19,852)
Treasury stock, at cost	(52,534)	(49,027)
Total Shareholders' Equity	84,052	85,078
Total Liabilities and Shareholders' Equity	132,106	161,339
Class A [Member]
Shareholders' Equity
Common stock	19,626	19,177
Class B [Member]
Shareholders' Equity
Common stock	$ 1,805	$ 1,805