Annual report pursuant to Section 13 and 15(d)

Benefit Plans Benefit Plans (Details)

v3.21.1
Benefit Plans Benefit Plans (Details) - USD ($)
12 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Defined Benefit Plan Disclosure [Line Items]    
Max dollar amount employer matches of the employee's contribution. $ 500  
Westell [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent 100.00%  
Defined Contribution Plan, Employer Discretionary Contribution Amount $ 47,000 $ 55,000