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Goodwill and Intangible Assets, Amortization Expense (Details) - USD ($)
3 Months Ended 9 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2017
Dec. 31, 2016
Amortization expense for acquired intangible assets [Abstract]        
Amortization expense $ 192,000 $ 166,000 $ 517,000 $ 456,000
Estimated future amortization expense for intangible assets subject to amortization [Abstract]        
2018 - remaining three months 194,000   194,000  
2019 776,000   776,000  
2020 714,000   714,000  
2021 614,000   614,000  
2022 580,000   580,000  
Thereafter 1,092,000   1,092,000  
Total $ 3,970,000   $ 3,970,000