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Consolidated Balance Sheets (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2013
Dec. 31, 2012
Current assets:    
Cash and cash equivalents $ 18,190 $ 55,509
Marketable securities 2,017 0
Receivables, net of allowance for doubtful accounts of $94 and $60, respectively 8,442 8,388
Inventories, net 12,442 10,873
Deferred income taxes 3,148 3,148
Prepaid expenses and other assets 1,673 1,369
Total current assets 45,912 79,287
Long-term marketable securities 23,359 0
Long-term inventories, net 1,120 1,955
Property and equipment, net 2,006 1,708
Intangibles, net 3,854 4,258
Goodwill 3,472 3,472
Deferred income taxes 1,195 1,195
Other assets 77 64
Total assets 80,995 91,939
Current Liabilities:    
Accounts payable 3,632 2,302
Accrued liabilities 2,305 2,143
Income taxes payable 0 14,782
Deferred product revenue 4,105 3,593
Total current liabilities 10,042 22,820
Deferred rent 326 422
Other long-term liabilities 2,029 2,029
Total liabilities 12,397 25,271
Shareholders' equity:    
Common stock, par value $0.001, 50,000,000 shares authorized, 9,004,901 and 9,163,462 shares issued and outstanding 9 9
Additional paid-in capital 38,955 40,430
Accumulated other comprehensive loss (33) 0
Retained earnings 29,667 26,229
Total shareholders' equity 68,598 66,668
Total liabilities and shareholders' equity $ 80,995 $ 91,939