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Condensed Consolidated Balance Sheets (unaudited) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2012
Dec. 31, 2011
Current assets:    
Cash and cash equivalents $ 138,060 $ 114,781
Accounts receivable, net 36,847 34,433
Inventories 20,095 18,637
Prepaid expenses 2,025 2,793
Prepaid income taxes 0 4,142
Deferred income taxes 599 556
Other current assets 633 398
Total current assets 198,259 175,740
Property, plant and equipment, net 44,329 44,282
Goodwill 28,515 28,515
Intangible assets with finite lives, net 20,735 22,706
Other assets 473 474
Total assets 292,311 271,717
Current liabilities:    
Trade accounts payable 12,397 11,526
Accrued expenses 11,568 8,435
Accrued compensation and other benefits 2,720 4,328
Dividends payable 0 5,237
Income taxes payable 2,587 0
Current portion of long-term debt 696 1,387
Total current liabilities 29,968 30,913
Long-term debt 89 23
Deferred income taxes 5,185 5,984
Other long-term obligations 2,889 2,788
Total liabilities 38,131 39,708
Commitments and contingencies (note 12)      
Stockholders' equity:    
Preferred stock, $25 par value. Authorized 2,000,000 shares; none issued and outstanding 0 0
Common stock, $.0667 par value. Authorized 60,000,000 shares; 29,288,655 shares issued and outstanding at June 30, 2012 and 29,165,721 shares issued and outstanding at December 31, 2011 1,953 1,944
Additional paid-in capital 53,275 49,933
Retained earnings 200,311 181,070
Accumulated other comprehensive loss (1,359) (938)
Total stockholders' equity 254,180 232,009
Total liabilities and stockholders' equity $ 292,311 $ 271,717