Stockholders' Equity (Narratives) (Details) - $ / shares	6 Months Ended
Sep. 30, 2023	Sep. 30, 2022
Common Stock [Member] \| Dividends Declared Two [Member]
Dividends Stock [Abstract]
Dividends Payable, Date Declared		Aug. 18, 2022
Dividend paid, amount per share		$ 0.50
Dividends Payable, Date of Record		Sep. 06, 2022
Dividends Payable, Date to be Paid		Sep. 20, 2022
Common Stock [Member] \| Dividends Declared Three [Member]
Dividends Stock [Abstract]
Dividends Payable, Date Declared		Apr. 06, 2022
Dividend paid, amount per share		$ 0.50
Dividends Payable, Date of Record		Apr. 18, 2022
Dividends Payable, Date to be Paid		Apr. 29, 2022
Nonvoting Common Stock [Member] \| Dividends Declared Two [Member]
Dividends Stock [Abstract]
Dividends Payable, Date Declared	Aug. 17, 2023
Dividend paid, amount per share	$ 0.04
Dividends Payable, Date of Record	Sep. 19, 2023
Dividends Payable, Date to be Paid	Sep. 29, 2023
Nonvoting Common Stock [Member] \| Dividends Declared Three [Member]
Dividends Stock [Abstract]
Dividends Payable, Date Declared	Jun. 07, 2023
Dividend paid, amount per share	$ 0.04
Dividends Payable, Date of Record	Jun. 20, 2023
Dividends Payable, Date to be Paid	Jun. 30, 2023

Aggregate dividends paid during the period for each share of common stock outstanding.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480008/505-10-S99-1

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Date the declared dividend will be paid, in YYYY-MM-DD format.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482913/230-10-50-3

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Date the dividend to be paid was declared, in YYYY-MM-DD format.

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