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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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SHARE BASED COMPENSATION - Narrative (Details)	3 Months Ended		6 Months Ended
SHARE BASED COMPENSATION - Narrative (Details)	Jun. 30, 2023 USD ($) director shares	Jun. 30, 2022 USD ($)	Jun. 30, 2023 USD ($) director shares	Jun. 30, 2022 USD ($)	May 06, 2015 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of directors \| director	3		3
2015 Omnibus Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized (in shares)					1,500,000
Shares available for issuance (in shares)	367,726		367,726
Expiration period			10 years
2015 Omnibus Incentive Plan \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise period			7 years
2015 Omnibus Incentive Plan \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise period			10 years
2015 Omnibus Incentive Plan \| Stock Options and Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Recognized compensation expense \| $	$ 2,700,000	$ 3,200,000	$ 4,000,000	$ 4,700,000
2015 Omnibus Incentive Plan \| Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense \| $	0		$ 0
2015 Omnibus Incentive Plan \| Stock Option \| Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)			0
2015 Omnibus Incentive Plan \| Restricted shares, Restricted stock units and Performance share units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense \| $	$ 9,500,000		$ 9,500,000
Expected cost recognition weighted average period			2 years 14 days
Shares issued (in shares)			276,252
2015 Omnibus Incentive Plan \| Performance Shares \| Tranche one
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued (in shares)			62,124
Performance period			3 years
2015 Omnibus Incentive Plan \| Time Based Shares \| Tranche two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued (in shares)			214,128
Vesting period			3 years