Significant Accounting Policies, Amendments to Equity Plan (Details) - shares	Jun. 30, 2021	Mar. 31, 2021
2020 Equity Incentive Plan [Member]
Amendments to Equity Plans [Abstract]
Number of shares authorized for issuance under the Plan (in shares)	1,600,000	2,600,000
2011 Equity Incentive Plan [Member]
Amendments to Equity Plans [Abstract]
Number of shares authorized for issuance under the Plan (in shares)	29,700,000	23,000,000.0
Reduction in fungible share reserve for each share issued pursuant to full value award (n shares)	(1.7)
Increase in fungible share reserve for each share returning from a full value award (in shares)	1.7