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Goodwill and Intangible Assets, Amortization Expense (Details) - USD ($)
3 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Amortization expense for acquired intangible assets [Abstract]    
Amortization expense $ 145,000 $ 145,000
Estimated future amortization expense for intangible assets subject to amortization [Abstract]    
2018 - remaining nine months 435,000  
2019 580,000  
2020 580,000  
2021 580,000  
2022 580,000  
Thereafter 1,093,000  
Total $ 3,848,000