Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
CURRENT ASSETS:
Cash and cash equivalents	$ 60,138	$ 73,995
Marketable securities	53,155	59,360
Accounts receivable, net	69,882	73,634
Inventories:
Finished goods	47,385	32,759
Work in process	45,084	50,462
Raw materials	8,954	11,285
Total inventory	101,423	94,506
Deferred tax assets	6,140	6,140
Other current assets	15,227	21,270
Total current assets	305,965	328,905
PROPERTY, PLANT AND EQUIPMENT	131,290	121,608
Less allowance for depreciation	64,673	57,340
PROPERTY, PLANT AND EQUIPMENT, NET	66,617	64,268
GOODWILL	18,771	18,468
OTHER ASSETS	3,500	0
Total assets	394,853	411,641
CURRENT LIABILITIES:
Accounts payable	44,431	48,344
Federal and state income taxes		1,567
Accrued liabilities	17,659	16,035
Total current liabilities	62,090	65,946
DEFERRED INCOME TAXES	9,397	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	4,130	3,539
Retained earnings	329,028	342,873
Accumulated other comprehensive income	57	72
Stockholders' Equity before Treasury Stock	340,656	353,925
Treasury stock, at cost	17,290	17,635
Total stockholders' equity	323,366	336,290
Total liabilities and stockholders' equity	$ 394,853	$ 411,641