Quarterly report pursuant to Section 13 or 15(d)

Basis of Presentation (Details Textual)

v2.4.0.6
Basis of Presentation (Details Textual) (USD $)
 3 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended 6 Months Ended 6 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Employee
Sep. 30, 2011
Sep. 30, 2012
Sale of Conference Plus, Inc [Member]
Dec. 31, 2011
Sale of Conference Plus, Inc [Member]
Sep. 30, 2012
Sale of Customer Networking Solutions Assets [Member]
Sep. 30, 2012
Sale of Customer Networking Solutions Assets [Member]
Sep. 30, 2011
Sale of Customer Networking Solutions Assets [Member]
Mar. 31, 2012
Sale of Customer Networking Solutions Assets [Member]
May 15, 2012
ANTONE Wireless Corporation [Member]
Employee
Sep. 30, 2012
Customer Relationships [Member]
May 15, 2012
Customer Relationships [Member]
Sep. 30, 2012
Technology [Member]
May 15, 2012
Technology [Member]
Basis of Presentation (Textual) [Abstract]                              
Number of employees affected by planned relocation     35                        
Number of Employee Hired                     9        
Amount of rights of ANTONE products                     $ 2,524,000        
Contingent cash consideration 3,500,000   3,500,000               3,500,000        
Total acquired intangible assets                     3,230,000   400,000   2,800,000
Estimated useful lives for acquired intangible assets                       8 years   8 years  
Warranty obligation for pre-acquisition sales made by ANTONE 303,000                            
Pre-acquisition warranty costs 25,000                            
Sale of conference plus           40,300,000                  
Escrow deposit made         4,100,000         3,400,000 3,000        
Proceeds from CNS asset sale        36,683,000         36,700,000            
Pre-tax gain on CNS asset sale   46,000    31,654,000         31,700,000            
Escrow Deposit Released             2,600,000 2,600,000              
Escrow Deposit Remaining             700,000 700,000              
Escrow Balance to NETGEAR and an additional payment             900,000 900,000              
Contingency Reserve             400,000 400,000              
Additional Expense             $ 500,000 $ 500,000