Assets Or Earning Power Sold, Percent

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- Definition

Class of Warrant or Right, Exercise Price of Warrants or Rights, Per One One-Thousandth-Of-A-Share

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- Definition

Class of Warrant or Right, Qualifying Offer, Ownership Threshold

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- References

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- Definition

Multiple Of Current Purchase Price of One Right

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- Definition

Number Stock Purchase Rights

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- Definition

Percentage of Common Stock Acquired That Will Cause Dilution

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- Definition

Percentage of Common Stock Acquired That Will Cause Dilution, Passive Institutional Investor

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- Definition

Percentage of Common Stock Owned By Acquired Person, Threshold

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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

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Face amount or stated value per share of common stock.

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The shares or units in an ESOP trust that have been assigned to individual participant accounts based on a known formula. IRS rules require allocations to be nondiscriminatory generally based on compensation, length of service, or a combination of both. For any particular participant such shares or units may be vested, unvested, or partially vested.

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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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Amount of stock repurchase plan authorized.

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Amount remaining of a stock repurchase plan authorized.

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- Definition

Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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Total cost of shares repurchased divided by the total number of shares repurchased.

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SHAREHOLDERS' EQUITY - Narrative (Details)				3 Months Ended						12 Months Ended
SHAREHOLDERS' EQUITY - Narrative (Details)	Aug. 09, 2019 $ / shares	Nov. 02, 2017 USD ($) $ / shares	Nov. 01, 2017 $ / shares	Mar. 31, 2020 USD ($) $ / shares	Dec. 31, 2019 USD ($) $ / shares	Sep. 30, 2019 USD ($) $ / shares	Jun. 30, 2019 USD ($) $ / shares	Mar. 31, 2019 USD ($) $ / shares	Dec. 31, 2017 USD ($)	Dec. 31, 2020 USD ($) $ / shares shares	Dec. 31, 2019 USD ($) $ / shares shares	Dec. 31, 2018 USD ($) $ / shares shares	Apr. 20, 2020 right $ / shares
Class of Stock [Line Items]
Common stock dividends per share (in dollars per share)	$ 0.08	$ 0.36	$ 0.30	$ 0.020	$ 0.020	$ 0.020	$ 0.090	$ 0.090
Dividends on common stock \| $				$ 2,692,213	$ 2,679,826	$ 2,676,900	$ 12,486,441	$ 12,430,279	$ 12,400,000	$ 2,692,000	$ 30,273,000	$ 49,770,000
ESPP shares market value										85.00%
Ownership plan \| shares										1,000,000.0
ESPP share discount										15.00%
Stock repurchase program \| $		$ 100,000,000.0
Stock repurchased during period (in shares) \| shares										0	5,000,000.0	3,200,000
Aggregate average price of stock repurchased (in dollars per share)											$ 3.67	$ 9.11
Value of common stock repurchased \| $											$ 18,340,000	$ 29,407,000
Amounts available for future share repurchases \| $										$ 41,600,000
Purchase price multiple													2
Common Class A
Class of Stock [Line Items]
Common stock, par value (in dollars per share)					$ 0.01					$ 0.01	$ 0.01		$ 0.01
Percentage of assets (percent)													50.00%
Percentage of outstanding common stock (percent)													50.00%
Qualifying offer ownership threshold (percent)													10.00%
Stock acquisition that will cause dilution (percent)													10.00%
Passive institutional investor stock acquisition that will cause dilution (percent)													15.00%
Common Class B
Class of Stock [Line Items]
Common stock, par value (in dollars per share)					$ 0.01					$ 0.01	$ 0.01		$ 0.01
Class A Right
Class of Stock [Line Items]
Dividend declared, number of purchase rights per common share \| right													1
Exercise price per one one-thousandth of a share													$ 6.06
Class B Right
Class of Stock [Line Items]
Dividend declared, number of purchase rights per common share \| right													1
Exercise price per one one-thousandth of a share													$ 6.06