Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Jan. 01, 2011
Current Assets
Cash and cash equivalents	$ 25,991	$ 16,650
Short-term investments		2,514
Accounts receivable, net	29,110	29,562
Inventories	36,482	34,548
Deferred income taxes	4,206	4,456
Other current assets	7,954	4,883
Total Current Assets	103,743	92,613
Property, Plant and Equipment, Net	13,706	15,082
Goodwill	15,279	15,279
Intangibles, Net	9,002	9,458
Deferred Income Taxes	11,115	11,318
Other Assets	2,570	2,970
Total Assets	155,415	146,720
Current Liabilities
Accounts payable	8,237	7,693
Accrued compensation and related taxes	7,509	7,811
Accrued expenses and other liabilities	10,868	11,871
Retirement plan obligations	2,508	2,437
Income taxes payable	712	2,006
Total Current Liabilities	29,834	31,818
Long-Term Debt	21,221	19,221
Retirement Plan Obligations	22,636	16,274
Deferred Gain on Sale of Real Estate	2,216	2,737
Other Long-Term Liabilities	464	687
Accrued Warranty Costs	1,391	1,424
Commitments and Contingencies (Note L )
Total Liabilities	77,762	72,161
Shareholders' Equity
Additional paid-in capital	29,178	26,014
Retained earnings	91,518	83,208
Accumulated other comprehensive loss	(18,718)	(12,659)
Treasury stock, at cost, 7,580 shares in 2011 and 7,324 shares in 2010	(44,843)	(42,248)
Total Shareholders' Equity	77,653	74,559
Total Liabilities and Shareholders' Equity	155,415	146,720
Class A [Member]
Shareholders' Equity
Common stock	18,713	18,439
Class B [Member]
Shareholders' Equity
Common stock	$ 1,805	$ 1,805