Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 101,403	$ 86,228
Restricted cash in escrow for SEC settlement (Notes 18 and 22)	12,826
Accounts receivable, net of allowances of $594 and $998 as of December 31, 2015 and 2014, respectively	39,363	40,268
Inventories	10,976	10,703
Short-term investments		75
Prepaid expenses and other current assets	3,654	2,597
Deferred tax assets	299	326
Total current assets	168,521	140,197
Property and equipment, net	2,651	1,848
Goodwill	32,979	34,521
Other assets	12,468	5,265
Total assets	216,619	181,831
Current liabilities:
Accounts payable	4,495	5,311
Accrued and other current liabilities	32,151	20,536
Deferred revenue	174	596
Total current liabilities	36,820	26,443
Other long-term liabilities	$ 87	$ 114
Commitments and contingencies (Notes 10 and 18)
Stockholders' equity:
Preferred stock; $0.001 par value; 10,000,000 shares authorized; no shares issued and outstanding
Common stock; $0.001 par value; 100,000,000 shares authorized; 49,533,835 and 49,948,897 shares issued and outstanding as of December 31, 2015 and 2014, respectively	$ 50	$ 50
Additional paid-in capital	296,086	287,108
Accumulated other comprehensive income	2,070	3,264
Accumulated deficit	(118,494)	(135,148)
Total stockholders' equity	179,712	155,274
Total liabilities and stockholders' equity	$ 216,619	$ 181,831