STOCK-BASED COMPENSATION - Narrative (Details)	6 Months Ended
Jun. 30, 2020 shares
Non-performance based restricted stock \| Minimum
STOCK-BASED COMPENSATION
Vesting period	2 years
Non-performance based restricted stock \| Maximum
STOCK-BASED COMPENSATION
Vesting period	5 years
Performance-based restricted stock
STOCK-BASED COMPENSATION
Performance conditions goals achieved within period, years	5 years
2006 Plan
STOCK-BASED COMPENSATION
Vesting period	10 years
Number of options outstanding	0
2014 Plan
STOCK-BASED COMPENSATION
Number of options authorized	1,127,200
Option expiration term	10 years
Options available for future grant	963,200
2014 Plan \| Minimum
STOCK-BASED COMPENSATION
Vesting period	1 year
2014 Plan \| Maximum
STOCK-BASED COMPENSATION
Vesting period	5 years
2014 Plan \| Granted after May 20, 2024
STOCK-BASED COMPENSATION
Number of options granted	0
2017 Plan
STOCK-BASED COMPENSATION
Number of options authorized	600,000
Options available for future grant	285,422

Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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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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- Definition

Number of shares authorized for issuance under share-based payment arrangement.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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- Definition

Gross number of share options (or share units) granted during the period.

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

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
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- Definition

Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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