Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Apr. 01, 2017	Dec. 31, 2016
CURRENT ASSETS:
Cash and cash equivalents	$ 159,676	$ 148,926
Short-term investments	105,504	109,238
Accounts receivable, net of allowance for doubtful accounts and sales returns of $882 and $979, as of April 1, 2017 and December 31, 2016, respectively	56,526	75,522
Inventories	11,908	11,347
Prepaid expenses and other current assets	12,137	9,909
Total current assets	345,751	354,942
Property and equipment, net	12,448	11,809
Deferred tax assets, net	44,458	33,094
Other assets, non-current	2,272	1,154
TOTAL ASSETS	404,929	400,999
CURRENT LIABILITIES:
Accounts payable	6,591	5,208
Accrued liabilities	20,490	34,649
Deferred revenue	67,484	68,997
Total current liabilities	94,565	108,854
Deferred revenue, non-current	28,351	28,785
Deferred and other tax liabilities, non-current	288	201
Other liabilities, non-current	312	499
TOTAL LIABILITIES	123,516	138,339
Commitments and Contingencies (Note 5)
STOCKHOLDERS’ EQUITY
Preferred stock—$0.0001 par value; 20,000 shares authorized, no shares issued or outstanding as of April 1, 2017 and December 31, 2016, respectively.	0	0
Common stock—$0.0001 par value; 1,000,000 shares authorized, 36,740 and 36,303 shares issued and outstanding as of April 1, 2017 and December 31, 2016, respectively.	4	4
Treasury stock— 8,110 shares outstanding as of October 1, 2016 and December 26, 2015	0	0
Additional paid-in capital	274,287	256,774
Accumulated other comprehensive loss	(49)	(17)
Retained earnings	7,171	5,899
TOTAL STOCKHOLDERS’ EQUITY	281,413	262,660
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$ 404,929	$ 400,999