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Consolidated Balance Sheets - USD ($)
$ in Thousands
Jun. 30, 2015
Dec. 31, 2014
Current assets:    
Cash and cash equivalents $ 10,873 $ 7,440
Marketable securities 6,385 6,994
Receivables, net of allowance for doubtful accounts of $52 and $58, respectively 8,557 9,916
Inventories 14,340 12,766
Distributor channel inventories 1,629 1,698
Deferred income taxes 3,824 3,824
Prepaid expenses and other assets 2,545 2,143
Total current assets 48,153 44,781
Long-term marketable securities 18,756 19,162
Long-term inventories, net 680 876
Property and equipment, net 1,811 2,039
Intangibles, net 7,267 7,896
Goodwill 12,724 12,724
Deferred income taxes 1,278 1,265
Other assets 114 117
Total assets 90,783 88,860
Current liabilities:    
Accounts payable 3,033 3,057
Accrued liabilities 2,908 2,694
Deferred product revenue 4,744 5,004
Total current liabilities 10,685 10,755
Deferred rent 196 248
Other long-term liabilities 1,237 1,841
Total liabilities 12,118 12,844
Shareholders' equity:    
Common stock, par value $0.001, 50,000,000 shares authorized, 9,128,053 and 9,097,827 shares issued and outstanding 9 9
Additional paid-in capital 45,513 44,939
Accumulated other comprehensive (loss) (81) (8)
Retained earnings 33,224 31,076
Total shareholders' equity 78,665 76,016
Total liabilities and shareholders' equity $ 90,783 $ 88,860