Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Jul. 01, 2012	Dec. 31, 2011
CURRENT ASSETS:
Cash and cash equivalents	$ 54,703	$ 73,995
Marketable securities	64,071	59,360
Accounts receivable, net	57,840	73,634
Inventories:
Finished goods	32,051	32,759
Work in process	45,017	50,462
Raw materials	10,328	11,285
Total inventory	87,396	94,506
Deferred tax assets	6,140	6,140
Other current assets	24,319	21,270
Total current assets	294,469	328,905
PROPERTY, PLANT AND EQUIPMENT	128,445	121,608
Less allowance for depreciation	62,322	57,340
PROPERTY, PLANT AND EQUIPMENT, NET	66,123	64,268
GOODWILL	18,771	18,468
Total assets	379,363	411,641
CURRENT LIABILITIES:
Accounts payable	39,860	48,344
Federal and state income taxes		1,567
Accrued liabilities	16,324	16,035
Total current liabilities	56,184	65,946
DEFERRED INCOME TAXES	9,398	9,405
COMMITMENTS AND CONTINGENCIES
STOCKHOLDERS' EQUITY
Common stock, $1 par value: Authorized: 12,000,000 shares Issued: 7,440,518 shares	7,441	7,441
Paid-in capital	4,008	3,539
Retained earnings	319,627	342,873
Accumulated other comprehensive income	58	72
Stockholders' Equity before Treasury Stock	331,134	353,925
Treasury stock, at cost	17,353	17,635
Total stockholders' equity	313,781	336,290
Total liabilities and stockholders' equity	$ 379,363	$ 411,641