CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (USD $) In Thousands	Sep. 30, 2011	Dec. 31, 2010
Current Assets:
Cash and cash equivalents	$ 96,503	$ 83,829
Marketable securities	5,745	1,706
Accounts receivable - less allowance for doubtful accounts of $789 and $653 at September 30, 2011 and December 31, 2010, respectively	45,891	53,312
Inventories	54,158	56,970
Prepaid expenses and other current assets	4,635	2,354
Refundable income taxes	2,211	4,370
Deferred income taxes	1,552	1,023
Total Current Assets	210,695	203,564
Property, plant and equipment - net	41,042	44,793
Restricted cash	0	155
Deferred income taxes	2,746	3,201
Intangible assets - net	11,001	11,291
Goodwill	4,297	4,264
Other assets	9,337	9,904
TOTAL ASSETS	279,118	277,172
Current Liabilities:
Accounts payable	18,740	21,180
Accrued expenses	23,823	22,545
Accrued restructuring costs	160	160
Income taxes payable	632	1,584
Dividends payable	856	799
Total Current Liabilities	44,211	46,268
Long-term Liabilities:
Accrued restructuring costs	224	347
Liability for uncertain tax positions	4,053	2,874
Minimum pension obligation and unfunded pension liability	8,043	7,350
Total Long-term Liabilities	12,320	10,571
Total Liabilities	56,531	56,839
Commitments and Contingencies
Stockholders' Equity:
Preferred stock, no par value, 1,000,000 shares authorized; none issued	0	0
Additional paid-in capital	24,902	23,725
Retained earnings	196,765	195,477
Accumulated other comprehensive loss	(262)	(39)
Total Stockholders' Equity	222,587	220,333
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	279,118	277,172
Class A [Member]
Stockholders' Equity:
Common Stock	217	217
Class B [Member]
Stockholders' Equity:
Common Stock	$ 965	$ 953