Dividends (Details) - USD ($)					3 Months Ended
Mar. 01, 2022	Dec. 14, 2021	Sep. 28, 2021	Jun. 18, 2021	Mar. 31, 2022	Mar. 31, 2021
Common Stock, Dividends, Per Share, Declared					$ 0.16	$ 0
Dividends Payable, Date to be Paid	Apr. 08, 2022	Jan. 14, 2022	Oct. 22, 2021	Jul. 16, 2021
Dividends Payable, Date of Record	Mar. 21, 2022	Dec. 27, 2021	Oct. 08, 2021	Jun. 30, 2020
Dividends	$ 970,000	$ 3,990,000	$ 960,000	$ 960,000
Payments of Ordinary Dividends, Common Stock					$ 3,988,000
Dividends Payable, Date Declared	Mar. 01, 2022	Dec. 14, 2021	Sep. 28, 2021	Jun. 18, 2021
Class A Common Stock
Common Stock, Dividends, Per Share, Declared	$ 0.16	$ 0.16	$ 0.16	$ 0.16
Class B Common Stock
Common Stock, Dividends, Per Share, Declared	$ 0.16	0.16	$ 0.16	$ 0.16
Common Class A and Common Class B
Common Stock, Dividends, Per Share, Declared		$ 0.50

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

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

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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Amount of paid and unpaid cash, stock, and paid-in-kind (PIK) dividends declared, for example, but not limited to, common and preferred stock.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
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Date the dividend to be paid was declared, in YYYY-MM-DD format.

+ References

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Date the holder must own the stock to be entitled to the dividend, in YYYY-MM-DD format.

+ References

No definition available.

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Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity.

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-Publisher FASB
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