Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 28, 2013	Dec. 31, 2012
CURRENT ASSETS:
Cash and cash equivalents	$ 65,057	$ 18,675
Short-term investments	40,347
Accounts receivable, net of allowance of $0 as of September 28, 2013 and December 31, 2012	27,035	20,677
Inventories	1,247	3,736
Deferred tax assets	4,447
Prepaid expenses and other current assets	5,357	3,407
Total current assets	143,490	46,495
Property and equipment, net	3,541	2,686
Deferred tax assets, non-current	19,535
Other assets	574	2,316
TOTAL ASSETS	167,140	51,497
CURRENT LIABILITIES:
Accounts payable	1,477	3,221
Accrued and other current liabilities	17,745	18,710
Deferred revenue	32,240	23,917
Total current liabilities	51,462	45,848
Deferred revenue, non-current	8,705	6,903
Other liabilities, non-current	274	447
TOTAL LIABILITIES	60,441	53,198
Commitments and Contingencies (Note 6)
Redeemable convertible Series A preferred units – $2.81 per unit value; zero and 8,110 units authorized, issued and outstanding at September 28, 2013 and December 31, 2012, respectively		28,344
STOCKHOLDERS’ EQUITY (MEMBERS’ DEFICIT)
Common units – No par value per unit; zero units authorized, issued or outstanding at September 28, 2013; 33,333 units authorized, 17,300 units issued and outstanding at December 31, 2012		1,625
Preferred stock—$0.0001 par value per share; 20,000 authorized, no shares issued or outstanding at September 28, 2013; no shares authorized, issued or outstanding at December 31, 2012
Common stock—$0.0001 par value per share; 1,000,000 shares authorized, 30,492 shares issued and outstanding at September 28, 2013; no shares authorized, issued or outstanding at December 31, 2012	3
Treasury stock—No par value; 8,110 shares authorized and outstanding as of September 28, 2013 and December 31, 2012	(12,469)	(12,469)
Additional paid-in capital	126,310	1,522
Accumulated other comprehensive income	5
Accumulated deficit	(7,150)	(20,723)
TOTAL STOCKHOLDERS’ EQUITY (MEMBERS’ DEFICIT)	106,699	(30,045)
TOTAL LIABILITIES, REDEEMABLE CONVERTIBLE PREFERRED UNITS, AND STOCKHOLDERS’ EQUITY (MEMBERS’ DEFICIT)	$ 167,140	$ 51,497