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Intangible Assets, Amortization Expense (Details) - USD ($)
 3 Months Ended 9 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2016
Dec. 31, 2015
Amortization expense for acquired intangible assets [Abstract]        
Amortization expense $ 166,000 $ 145,000 $ 456,000 $ 476,000
Estimated future amortization expense for intangible assets subject to amortization [Abstract]        
2017 - remaining three months 157,000   157,000  
2018 580,000   580,000  
2019 580,000   580,000  
2020 580,000   580,000  
2021 580,000   580,000  
Thereafter 1,673,000   1,673,000  
Total $ 4,150,000   $ 4,150,000