Benefit Plans Benefit Plans (Details) - USD ($)	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Defined Contribution Plan Disclosure [Line Items]
Max dollar amount employer matches of the employee's contribution.	$ 500
Westell [Member]
Defined Contribution Plan Disclosure [Line Items]
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent	100.00%
Defined Contribution Plan, Employer Discretionary Contribution Amount	$ 100,000	$ 100,000