STOCK-BASED COMPENSATION - Stock Options Activity (Details) - Stock options - USD ($)	6 Months Ended
Jun. 30, 2020	Jun. 30, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock Option Award Exercise Price as a Percentage of the Fair Market Value of a Share of Common Stock	100.00%
Total compensation cost not yet recognized	$ 0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Options outstanding, Number of Options, At the Beginning of the Year (shares)	5,000	5,000
Expired, number of options (shares)	0	0
Options outstanding, Number of Options, At the End of the Period (shares)	5,000	5,000
Options exercisable, Number of Options, At the End of the Period (shares)	5,000	5,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]
Options outstanding, weighted average exercise price per share, At the Beginning of the Year (usd per share)	$ 24.90	$ 24.90
Expired, weighted average exercise price per share (usd per share)	0.00	0.00
Options outstanding, weighted average exercise price per share, At the End of the Period (usd per share)	24.90	24.90
Options exercisable, weighted average exercise price per share, At the End of the Period (usd per share)	$ 24.90	$ 24.90

Stock Option Award Exercise Price as a Percentage of the Fair Market Value of a Share of Common Stock

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- Definition

Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

+ References

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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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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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- Definition

The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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- Definition

For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired.

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- Definition

Weighted average price of options that were either forfeited or expired.

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- Definition

Number of options outstanding, including both vested and non-vested options.

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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