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Commitments and Contingencies Additional Information (Details)
9 Months Ended 12 Months Ended
Dec. 31, 2015
USD ($)
Mar. 31, 2014
Dec. 28, 2015
firm
Other Commitments [Line Items]      
Warranty period   5 years  
Number of venture firms invested in Lifesize | firm     3
Parent guarantee for purchase obligation of third party contract manufacturer      
Other Commitments [Line Items]      
Maximum amount of the guarantees $ 3,800,000.0    
Guarantees outstanding 1,300,000    
Indemnification agreement      
Other Commitments [Line Items]      
Amount accrued for indemnification provisions 0    
SEC Investigation      
Other Commitments [Line Items]      
Possible payment to SEC $ 7,500,000    
European Countries [Member]      
Other Commitments [Line Items]      
Warranty period 2 years    
All Other Countries [Member]      
Other Commitments [Line Items]      
Warranty period 1 year