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CONSOLIDATED BALANCE SHEETS - USD ($)
$ in Thousands
Mar. 31, 2016
Dec. 31, 2015
Current assets:    
Cash and cash equivalents $ 53,213 $ 54,092
Marketable securities 16,482 17,682
Accounts receivable, less reserve for doubtful accounts of $19 and $31, respectively 12,574 11,300
Other receivables 331 82
Inventories 21,318 17,998
Prepaid expenses and other current assets 1,327 2,098
Total current assets 105,245 103,252
Property, plant and equipment, net 13,611 13,801
Long-term marketable securities 1,217 1,633
Intangible assets, net 12,455 12,755
Goodwill 14,346 14,346
Restricted cash 450 450
Total assets 147,324 146,237
Current liabilities:    
Accounts payable 5,144 6,724
Accrued liabilities 10,677 12,057
Total current liabilities 15,821 18,781
Other long-term liabilities $ 2,617 $ 4,708
Commitments and contingencies (Note 11)
Stockholders' equity:    
Preferred stock, $.01 par value, 5,000,000 shares authorized, no shares issued or outstanding
Common stock, $.01 par value, 80,000,000 shares authorized, 33,097,903 shares at March 31, 2016 and 32,949,353 shares at December 31, 2015 issued and outstanding $ 331 $ 329
Additional paid-in capital 205,142 202,527
Accumulated other comprehensive loss (6,670) (8,566)
Accumulated deficit (69,917) (71,542)
Total stockholders' equity 128,886 122,748
Total liabilities and stockholders' equity $ 147,324 $ 146,237