Segment Information - Summary of Revenue, Property and Equipment, Net by Geographic Region (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended												12 Months Ended
	Dec. 31, 2014		Sep. 26, 2014		Jun. 27, 2014		Mar. 28, 2014	Dec. 31, 2013	Sep. 27, 2013		Jun. 28, 2013	Mar. 29, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Net revenues:
Net revenue, total	$ 107,875	[1]	$ 108,061	[1],[2]	$ 109,589	[1]	$ 108,032	$ 120,222	$ 122,918	[2]	$ 117,128	$ 101,672	$ 433,557	$ 461,940	$ 476,871
Property and equipment, net:
Property and equipment, net	27,221							34,945					27,221	34,945
UNITED STATES
Net revenues:
Net revenue, total													206,610	199,790	208,874
Property and equipment, net:
Property and equipment, net	19,148							26,550					19,148	26,550
International [Member]
Net revenues:
Net revenue, total													226,947	262,150	267,997
Israel [Member]
Property and equipment, net:
Property and equipment, net	4,888							5,057					4,888	5,057
Other countries
Property and equipment, net:
Property and equipment, net	$ 3,185							$ 3,338					$ 3,185	$ 3,338

[1] A history of operating losses in recent years has led to uncertainty with respect to the Company’s ability to realize certain net deferred tax assets, and as a result, the Company recorded increased valuation allowances of $24.5 million, $4.2 million and $0.3 million, in the second, third and fourth quarters of fiscal 2014, respectively, against its U.S. net deferred tax assets.

[2] As a result of the expiration of the applicable statute of limitations relating to the tax audits in the U.S. for years 2008 through 2010, the Company recorded tax benefits of $9.0 million and $39.0 million, in the third quarter of fiscal 2014 and 2013, respectively.