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Commitments and Contingencies (Details)
1 Months Ended 12 Months Ended
Jan. 23, 2017
USD ($)
ft²
Feb. 28, 2014
USD ($)
ft²
May 31, 2007
USD ($)
ft²
Mar. 31, 2019
USD ($)
subsidiary
Mar. 31, 2018
USD ($)
Mar. 31, 2017
USD ($)
Jul. 23, 2013
USD ($)
Operating Leases              
Area of Real Estate Property | ft² 5,980   52,000        
Term of lease 60 months 96 months 88 months        
Monthly lease rate during first year of lease $ 14,000 $ 76,000 $ 102,000        
Maximum monthly lease rate during last year of lease 16,000 $ 90,000 $ 120,000        
Reduced office space due to amendment of the lease agreement | ft²   11,000          
Tenant improvement allowance $ 119,000 $ 328,000          
Future minimum rental payments under non-cancelable operating leases              
2020       $ 2,408,000      
2021       2,150,000      
2022       1,981,000      
2023       548,000      
2024       177,000      
Total       7,264,000      
Total rent expense       $ 1,900,000 $ 1,800,000 $ 1,700,000  
Maximum | Maxxess              
Related Party Transaction              
Ownership percentage of non-controlling       2.00%      
Maxxess              
Related Party Transaction              
Number of former subsidiaries | subsidiary       1      
Promissory note payable issued to reporting entity for amounts previously owed under a sublease agreement       $ 146,000     $ 274,000
Interest on promissory note (as a percent)       6.00%