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Consolidated Balance Sheets (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Current assets:    
Cash and cash equivalents $ 17,192 $ 55,509
Marketable securities 3,200 0
Receivables, net of allowance for doubtful accounts of $129 and $60, as of December 31, 2013 and 2012 respectively 9,378 8,388
Inventories 12,278 10,873
Deferred income taxes 3,325 3,148
Prepaid expenses and other assets 2,693 1,369
Total current assets 48,066 79,287
Long-term marketable securities 22,326 0
Long-term inventories, net 551 1,955
Property and equipment, net 1,825 1,708
Intangibles, net 3,710 4,258
Goodwill 3,472 3,472
Deferred income taxes 1,024 1,195
Other assets 87 64
Total assets 81,061 91,939
Current liabilities:    
Accounts payable 2,730 2,302
Accrued liabilities 1,761 2,143
Income taxes payable 0 14,782
Deferred product revenue 4,158 3,593
Total current liabilities 8,649 22,820
Deferred rent 286 422
Other long-term liabilities 1,791 2,029
Total liabilities 10,726 25,271
Shareholders' equity:    
Common stock, par value $0.001, 50,000,000 shares authorized, 8,986,080 and 9,163,462 shares issued and outstanding as of December 31, 2013 and 2012, respectively 9 9
Additional paid-in capital 41,311 40,430
Accumulated other comprehensive income 23 0
Retained earnings (accumulated deficit) 28,992 26,229
Total shareholders' equity 70,335 66,668
Total liabilities and shareholders' equity 81,061 91,939
Inventory [Member]
    
Current assets:    
Inventories 10,758 9,584
Distributor Channel Inventory [Member]
    
Current assets:    
Inventories $ 1,520 $ 1,289