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BENEFIT PLANS - Other Deferred Compensation Arrangements (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Deferred Compensation Arrangements [Abstract] |  |  |
Deferred compensation arrangements (161,457 shares at December 31, 2020 and 179,548 shares at December 31, 2019) | $ 9,127 | $ 10,120 |
Other Deferred Compensation Arrangements [Member] |  |  |
Deferred Compensation Arrangements [Abstract] |  |  |
Deferred compensation arrangements (161,457 shares at December 31, 2020 and 179,548 shares at December 31, 2019) | 5,400 | 2,600 |
Expense recognized under plan | $ 400 | $ 200 | $ 80

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- Definition The compensation expense recognized during the period pertaining to the deferred compensation arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5047-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 710 -SubTopic 10 -Section 30 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6409875&loc=d3e20015-108363 + Details
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- Definition The carrying amount of the liability as of the balance sheet date to an individual under a deferred compensation arrangement. This amount may be the result of periodic accruals made over the period of active employment, or reflect termination benefits resulting contractual terms or a death benefit. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 710 -SubTopic 10 -Section 30 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6409875&loc=d3e20015-108363 + Details
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- References No definition available. + Details
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