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Intangible Assets, Amortization Expense (Details) - USD ($)
3 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Amortization expense for acquired intangible assets [Abstract]    
Amortization expense $ 577,000 $ 192,000
Estimated future amortization expense for intangible assets subject to amortization [Abstract]    
2020 - remaining nine months 1,223,000  
2021 1,554,000  
2022 1,512,000  
2023 1,477,000  
2024 1,098,000  
Thereafter 1,101,000  
Total $ 7,965,000