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EMPLOYEE STOCK COMPENSATION - Summary of SARs Activity (Details) - Stock appreciation rights - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2020 | Dec. 31, 2019
Number of Shares |  |
Outstanding at beginning of period (in shares) | 1,559,012 |
Outstanding at end of period (in shares) | 1,559,012 | 1,559,012
Exercisable at end of period (in shares) | 1,559,012 |
Weighted-Average Exercise Price Per Share |  |
Outstanding at beginning of period (in dollars per share) | $ 11.60 |
Outstanding at end of period (in dollars per share) | 11.60 | $ 11.60
Exercisable at end of period (in dollars per share) | $ 11.60 |
Weighted-Average Remaining Contract Term |  |
Outstanding | 2 years 4 months 24 days | 2 years 7 months 6 days
Exercisable at end of period | 2 years 4 months 24 days |
Aggregated Intrinsic Value |  |
Outstanding | $ (6,503) | $ 8,508
Exercisable at end of period | $ (6,503) |

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- Definition Number of equity instruments other than options outstanding, including both vested and non-vested instruments. + 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 (c)(1)(ii) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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