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Unaudited Condensed Consolidated Balance Sheets - USD ($)
$ in Thousands
Jun. 30, 2018
Dec. 31, 2017
Current assets:    
Cash and cash equivalents $ 4,079 $ 5,571
Marketable securities 2,852 2,689
Receivables, net of allowance for doubtful accounts of $527 and $472, respectively 5,139 7,794
Inventories, net 14,380 14,415
Distributor channel inventories 1,555
Prepaid expenses and other assets 2,339 1,862
Total current assets 28,789 33,886
Long-term marketable securities 6,391 10,349
Long-term inventories, net 8,351 8,708
Property and equipment, net 1,423 1,549
Intangibles, net 8,511 6,543
Deferred income taxes 7,458 6,531
Other assets 318 311
Total assets 61,241 67,877
Current liabilities:    
Accounts payable 3,528 4,122
Accrued liabilities 1,844 1,843
Deferred product revenue 258 4,635
Total current liabilities 5,630 10,600
Deferred rent 138 103
Other long-term liabilities 686 607
Total liabilities 6,454 11,310
Shareholders' equity:    
Common stock, par value $0.001, 50,000,000 shares authorized, 8,306,935 and 8,319,022 shares issued and outstanding 8 8
Additional paid-in capital 47,750 47,464
Accumulated other comprehensive loss (174) (65)
Retained earnings 7,203 9,160
Total shareholders' equity 54,787 56,567
Total liabilities and shareholders' equity $ 61,241 $ 67,877