Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 29, 2012	Dec. 31, 2011
Current Assets
Cash and cash equivalents	$ 27,120	$ 25,991
Short-term investments	227
Accounts receivable, net	32,877	29,110
Inventories	38,020	36,482
Deferred income taxes	3,417	4,206
Other current assets	8,072	7,954
Total Current Assets	109,733	103,743
Property, Plant and Equipment, Net	14,376	13,706
Goodwill	15,279	15,279
Intangibles, Net	8,606	9,002
Deferred Income Taxes	11,570	11,115
Other Assets	1,775	2,570
Total Assets	161,339	155,415
Current Liabilities
Line of credit	15,000
Accounts payable	14,489	8,237
Accrued compensation and related taxes	8,132	7,509
Accrued expenses and other liabilities	11,910	10,868
Retirement plan obligations	2,731	2,508
Income taxes payable	567	712
Total Current Liabilities	52,829	29,834
Line of Credit		21,221
Retirement Plan Obligations	19,808	22,636
Deferred Gain on Sale of Real Estate	1,695	2,216
Other Long-Term Liabilities	662	464
Accrued Warranty Costs	1,267	1,391
Commitments and Contingencies (Note L)
Total Liabilities	76,261	77,762
Shareholders' Equity
Additional paid-in capital	32,309	29,178
Retained earnings	100,666	91,518
Accumulated other comprehensive loss	(19,852)	(18,718)
Treasury stock, at cost	(49,027)	(44,843)
Total Shareholders' Equity	85,078	77,653
Total Liabilities and Shareholders' Equity	161,339	155,415
Class A [Member]
Shareholders' Equity
Common stock	19,177	18,713
Class B [Member]
Shareholders' Equity
Common stock	$ 1,805	$ 1,805