CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 17,004	$ 29,530
Restricted cash	287	296
Short-term investments	24,002	37,761
Accounts receivable, net	20,038	21,322
Inventories	32,276	19,855
Prepaid expenses and other current assets	6,164	3,842
Total current assets	99,771	112,606
Property and equipment, net	6,663	6,584
Long-term investments	6,732	13,716
Intangible assets, net	26,945	4,547
Goodwill	16,408	2,760
Other assets	1,906	1,650
Total assets	158,425	141,863
Current liabilities:
Accounts payable	20,754	17,588
Accrued liabilities	6,672	5,880
Deferred revenue	1,299	1,099
Current portion of notes payable	584	727
Total current liabilities	29,309	25,294
Revolving credit line	5,000
Notes payable	135	186
Other long-term liabilities	1,230	938
Total liabilities	$ 35,674	$ 26,418
Commitments and contingencies (Note 11)
Stockholders' equity:
Common stock, $0.0001 par value; 500,000,000 shares authorized; 24,616,016 and 24,590,768 shares issued; 23,227,721 and 23,436,288 shares outstanding at March 31, 2016 and December 31, 2015, respectively	$ 2	$ 2
Treasury stock, at cost; 1,388,295 and 1,154,480 shares at March 31, 2016 and December 31, 2015, respectively	(10,757)	(9,020)
Additional paid-in capital	222,721	220,782
Accumulated deficit	(88,941)	(95,580)
Accumulated other comprehensive loss	(274)	(739)
Total stockholders' equity	122,751	115,445
Total liabilities and stockholders' equity	$ 158,425	$ 141,863