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CONDENSED CONSOLIDATED BALANCE SHEETS (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2013
Dec. 31, 2012
Current assets:    
Cash and cash equivalents $ 24,863 $ 16,044
Marketable securities 21,203 38,064
Restricted marketable securities 1,583 0
Accounts receivable, net of allowance for doubtful accounts of $1,009 at June 30, 2013 and $627 at December 31, 2012 39,582 42,652
Inventories 28,897 39,016
Deferred tax assets, net 126 126
Prepaid expenses and other 5,443 4,829
Total current assets 121,697 140,731
Property and equipment, net of accumulated depreciation of $63,680 at June 30, 2013 and $59,702 at December 31, 2012 13,392 15,229
Marketable securities 11,586 1,201
Intangible assets, net of accumulated amortization of $12,478 at June 30, 2013 and $11,951 at December 31, 2012 2,635 3,163
Deferred tax assets, net 468 584
Other assets 618 623
Total assets 150,396 161,531
Current liabilities:    
Accounts payable 48,636 45,732
Accrued expenses 27,593 27,800
Short-term margin loan facility 1,583 0
Total current liabilities 77,812 73,532
Other long-term liabilities 2,557 2,552
Total liabilities 80,369 76,084
Stockholders' equity:    
Preferred stock, par value $0.001; 2,000 shares authorized and none outstanding 0 0
Common stock, par value $0.001; 50,000 shares authorized, 33,957 and 33,655 shares issued and outstanding at June 30, 2013 and December 31, 2012, respectively 34 34
Additional paid-in capital 440,109 438,477
Accumulated other comprehensive income (loss) (24) 14
Accumulated deficit (345,092) (328,078)
Stockholders' equity before treasury stock 95,027 110,447
Treasury stock at cost; 2,436 common shares at June 30, 2013 and December 31, 2012, respectively (25,000) (25,000)
Total stockholders' equity 70,027 85,447
Total liabilities and stockholders' equity $ 150,396 $ 161,531