Commitments and Contingencies - Additional Information (Detail) € in Millions		1 Months Ended		3 Months Ended
		Jun. 30, 2012 Patents	Oct. 30, 2011 Patents	Apr. 01, 2016 USD ($)	Apr. 01, 2016 EUR (€)
Other Commitments [Line Items]
Non-cancelable purchase commitments				$ 19,800,000
Post-closing Adjustments Period				90 days
Maximum amount of potential future payments under the company's financial guarantees				$ 700,000
Business Combination, Contingent Consideration, Liability, Current	[1]			7,991,000
Loss Contingency, Patents Allegedly Infringed, Number | Patents		1	2
Guarantee Obligations [Member]
Other Commitments [Line Items]
Guarantees related to rent obligations				1,900,000
Indemnification [Member]
Other Commitments [Line Items]
Accrual for indemnification provisions				0
Israel [Member] | Guarantee Obligations [Member]
Other Commitments [Line Items]
Guarantees related to rent obligations				300,000
TVN [Member] | Guarantee Obligations [Member]
Other Commitments [Line Items]
Guarantees related to rent obligations				1,300,000
TVN's 2015 revenue, difference as converted from euros to US dollars [Member] | Maximum [Member] | TVN [Member]
Other Commitments [Line Items]
Business Combination, Contingent Consideration, Liability				75,000,000	€ 76
TVN's 2015 backlog [Member] | Maximum [Member] | TVN [Member]
Other Commitments [Line Items]
Business Combination, Contingent Consideration, Liability				$ 5,000,000

[1] The TVN acquisition is subject to post-closing adjustments as set forth in the TVN Purchase Agreement to be determined within 90 days from the acquisition date in amounts respectively capped to (i) the difference between €76 million (as converted from euros into U.S. dollars) and $75 million, with respect to an adjustment based on TVN’s 2015 revenue, and (ii) $5 million with respect to an adjustment based on TVN’s 2015 backlog that ships during the first half of 2016.