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CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (USD $)
In Thousands
Jun. 30, 2011
Dec. 31, 2010
Current Assets:    
Cash and cash equivalents $ 93,513 $ 83,829
Marketable securities 6,152 1,706
Accounts receivable - less allowance for doubtful accounts of $784 and $653 at June 30, 2011 and December 31, 2010, respectively 49,441 53,312
Inventories 56,269 56,970
Prepaid expenses and other current assets 4,886 2,354
Refundable income taxes 1,598 4,370
Deferred income taxes 1,351 1,023
Total Current Assets 213,210 203,564
Property, plant and equipment - net 42,365 44,793
Restricted cash 0 155
Deferred income taxes 3,410 3,201
Intangible assets - net 11,158 11,291
Goodwill 4,427 4,264
Other assets 9,853 9,904
TOTAL ASSETS 284,423 277,172
Current Liabilities:    
Accounts payable 22,036 21,180
Accrued expenses 25,484 22,545
Accrued restructuring costs 160 160
Income taxes payable 1,680 1,584
Dividends payable 836 799
Total Current Liabilities 50,196 46,268
Long-term Liabilities:    
Accrued restructuring costs 265 347
Liability for uncertain tax positions 3,179 2,874
Minimum pension obligation and unfunded pension liability 7,812 7,350
Total Long-term Liabilities 11,256 10,571
Total Liabilities 61,452 56,839
Commitments and Contingencies    
Stockholders' Equity:    
Preferred stock 0 0
Additional paid-in capital 24,530 23,725
Retained earnings 196,553 195,477
Accumulated other comprehensive income (loss) 706 (39)
Total Stockholders' Equity 222,971 220,333
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY 284,423 277,172
Class A [Member]
    
Stockholders' Equity:    
Common stock 217 217
Total Stockholders' Equity 217 217
Class B [Member]
    
Stockholders' Equity:    
Common stock 965 953
Total Stockholders' Equity $ 965 $ 953