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CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($)
$ in Thousands
Jun. 30, 2017
Dec. 31, 2016
Current assets:    
Cash and cash equivalents $ 13,370 $ 6,494
Short-term investments 90,420 89,268
Accounts receivable, net 16,702 14,305
Inventory, net 8,382 6,844
Prepaid expenses and other current assets 2,340 3,032
Restricted cash   80
Total current assets 131,214 120,023
Property and equipment, net 8,724 7,593
Intangible asset, net 5,029 6,567
Deposits and other assets 559 188
Total assets 145,526 134,371
Current liabilities:    
Accounts payable 5,974 2,967
Accrued liabilities 13,061 13,911
Deferred rent 89 60
Total current liabilities 19,124 16,938
Other liabilities 468 159
Total liabilities 19,592 17,097
Commitments and contingencies (see Note 8)
Stockholders' equity:    
Preferred stock, $0.001 par value; 5,000 shares authorized, no shares issued or outstanding
Common stock, $0.001 par value; 150,000 shares authorized, 34,461 and 33,971 shares issued and 34,433 and 33,943 shares outstanding at June 30, 2017 and December 31, 2016, respectively 34 34
Additional paid-in capital 320,500 308,815
Accumulated other comprehensive income 46 648
Accumulated deficit (194,514) (192,091)
Less treasury stock (28 shares as of June 30, 2017 and December 31, 2016) (132) (132)
Total stockholders' equity 125,934 117,274
Total liabilities and stockholders' equity $ 145,526 $ 134,371