CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($)
$ in Thousands
Jun. 30, 2016
Dec. 31, 2015
Current assets:    
Cash and cash equivalents $ 22,807 $ 29,530
Restricted cash 268 296
Short-term investments 20,780 37,761
Accounts receivable, net 22,982 21,322
Inventories 32,775 19,855
Prepaid expenses and other current assets 3,395 3,842
Total current assets 103,007 112,606
Property and equipment, net 6,564 6,584
Long-term investments 5,010 13,716
Intangible assets, net 25,633 4,547
Goodwill 16,615 2,760
Other assets 2,097 1,650
Total assets 158,926 141,863
Current liabilities:    
Accounts payable 19,484 17,588
Accrued liabilities 7,733 5,880
Deferred revenue 1,303 1,099
Current portion of notes payable 441 727
Total current liabilities 28,961 25,294
Revolving credit line 5,000  
Notes payable 85 186
Other long-term liabilities 805 938
Total liabilities 34,851 26,418
Commitments and contingencies (Note 11)
Stockholders' equity:    
Common stock, $0.0001 par value; 500,000,000 shares authorized; 24,753,839 and 24,590,768 shares issued; 23,171,713 and 23,436,288 shares outstanding at June 30, 2016 and December 31, 2015, respectively 2 2
Treasury stock, at cost; 1,582,126 and 1,154,480 shares at June 30, 2016 and December 31, 2015, respectively (12,262) (9,020)
Additional paid-in capital 225,396 220,782
Accumulated deficit (88,417) (95,580)
Accumulated other comprehensive loss (644) (739)
Total stockholders' equity 124,075 115,445
Total liabilities and stockholders' equity $ 158,926 $ 141,863