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STOCK-BASED COMPENSATION, Performance Based Equity Awards (Details) - USD ($) $ in Thousands | 3 Months Ended |
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Mar. 31, 2021 | Mar. 31, 2020
Performance Shares [Member] |  |
Performance Based Equity Awards [Abstract] |  |
Percentage of threshold target for each award eligible to be earned based on relative performance | 50.00% |
Percentage of target for each award eligible to be earned based on relative performance | 100.00% |
Percentage of maximum target for each award eligible to be earned based on relative performance | 150.00% |
Unrecognized compensation cost |  | $ 155
Award vesting period | 3 years |
Sales Incentive Award Program [Member] |  |
Performance Based Equity Awards [Abstract] |  |
Unrecognized compensation cost |  | $ 55
Award vesting period | 1 year |

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- Definition The percentage of maximum target for each award eligible to be earned based on relative performance. + References No definition available. + Details
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- Definition The percentage of target for each award eligible to be earned based on relative performance. + References No definition available. + Details
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- Definition The percentage of threshold target for each award eligible to be earned based on relative performance. + References No definition available. + Details
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- References No definition available. + Details
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- Definition Amount of cost not yet recognized for nonvested award under share-based payment 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 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition 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. + References 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=120381028&loc=d3e5070-113901 + Details
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