The preferential dividend rate for Common Stock as a percentage of the dividend paid on Class A Common Stock.

No definition available.

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- Definition

Percentage of the total number of directors that can be voted on and elected based on the voting rights the common stock.

+ References

No definition available.

+ Details

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- Definition

Number of votes per share each shareholder has.

+ References

No definition available.

+ Details

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- Definition

Description of basis for conversion of convertible common stock.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770

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- References

No definition available.

+ Details

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- Definition

Amount of paid and unpaid common stock dividends declared with the form of settlement in cash.

+ References

+ Details

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Stockholders' Equity (Details) - Common Stock [Member] $ / shares in Units, $ in Thousands	3 Months Ended		12 Months Ended
	Dec. 31, 2020 $ / shares	Dec. 31, 2018 $ / shares	Dec. 31, 2020 USD ($) Vote $ / shares	Dec. 31, 2019 USD ($) $ / shares	Dec. 31, 2018 USD ($) $ / shares
Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Cash dividend paid (in dollars per share) \| $ / shares	$ 2.00	$ 1.00	$ 2.77	$ 0.76	$ 1.72
Cash dividends paid \| $			$ 46,564	$ 13,913	$ 32,595
Minimum [Member]
Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Preferential dividend rate as a percentage of dividend paid on Class A Common Stock	105.00%		105.00%
Class A Common Stock [Member]
Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Percentage of directors that can be voted on in election			75.00%
Number of votes per share \| Vote			10
Conversion basis			1-for-1 basis
Cash dividend paid (in dollars per share) \| $ / shares	$ 1.90	$ 0.95	$ 2.62	$ 0.72	$ 1.63
Cash dividends paid \| $			$ 3,957	$ 1,143	$ 2,869