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Subsequent Events (Details) - USD ($)
9 Months Ended
Jan. 03, 2017
Dec. 22, 2016
Dec. 08, 2016
Nov. 30, 2016
Dec. 31, 2016
Jun. 16, 2014
Aug. 09, 2013
Subsequent Event [Line Items]              
FM Enabled Smartphones       30,000,000      
Subsequent Event [Member]              
Subsequent Event [Line Items]              
Other Loans Payable         $ 4,000,000    
Digonex [Member]              
Subsequent Event [Line Items]              
Business Combination, Additional Convertible Rights Acquired, Total Equity Interest in Acquiree, Percentage       79.00%      
Digonex [Member] | Subsequent Event [Member]              
Subsequent Event [Line Items]              
Convertible Debt $ 500,000.0            
Business Combination, Additional Convertible Rights Acquired, Total Equity Interest in Acquiree, Percentage 80.00%            
Digonex Non-recourse debt              
Subsequent Event [Line Items]              
Interest rate during period           5.00%  
Digonex Non-recourse debt | Subsequent Event [Member]              
Subsequent Event [Line Items]              
Interest rate during period         5.00%    
Sprint/NextRadio Agreement              
Subsequent Event [Line Items]              
Contractual Obligation             $ 15,000,000
Payment For Contractual Obligation       $ 33,200,000      
Sprint/NextRadio Agreement | Subsequent Event [Member]              
Subsequent Event [Line Items]              
Contractual Obligation     $ 6,000,000        
Payment For Contractual Obligation   $ 1,400,000 600,000        
Contractual Obligation Forgiven if Conditions Met     $ 5,800,000