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Condensed Consolidated Balance Sheets (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2012
Dec. 31, 2011
Current assets:    
Cash and cash equivalents $ 15,197 $ 47,069
Marketable securities 36,391 28,267
Accounts receivable, net of allowance for doubtful accounts of $297 at June 30, 2012 and $245 at December 31, 2011 48,033 36,849
Inventories 39,565 42,279
Deferred tax assets, net 2,005 2,011
Prepaid expenses and other 5,835 3,712
Total current assets 147,026 160,187
Property and equipment, net of accumulated depreciation of $63,786 at June 30, 2012 and $59,217 at December 31, 2011 16,886 18,496
Marketable securities 10,820 13,495
Intangible assets, net of accumulated amortization of $11,072 at June 30, 2012 and $10,899 at December 31, 2011 10,896 35,702
Goodwill 13,225 19,772
Deferred tax assets, net 937 1,023
Other assets 631 504
Total assets 200,421 249,179
Current liabilities:    
Accounts payable 43,168 54,030
Accrued expenses 25,375 25,044
Total current liabilities 68,543 79,074
Other long-term liabilities 3,866 4,080
Total liabilities 72,409 83,154
Stockholders' equity:    
Preferred stock, par value $0.001; 2,000 shares authorized and none outstanding      
Common stock, par value $0.001; 50,000 shares authorized, 32,950 and 32,262 shares issued and outstanding at June 30, 2012 and December 31, 2011, respectively 33 32
Additional paid-in capital 434,203 429,813
Accumulated other comprehensive income (loss) 9 (8)
Accumulated deficit (281,233) (238,812)
Stockholders' equity before treasury stock 153,012 191,025
Treasury stock at cost; 2,436 common shares at June 30, 2012 and December 31, 2011, respectively (25,000) (25,000)
Total stockholders' equity 128,012 166,025
Total liabilities and stockholders' equity $ 200,421 $ 249,179