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EQUITY AWARDS - Schedule of Nonvested Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2020 | Mar. 31, 2019 | Dec. 31, 2019 | Dec. 31, 2018
Number of Shares |  |  |  |
Outstanding at beginning of year (in shares) | 251,120 | 331,560 | 331,560 |
Granted (in shares) | 23,000 | 19,000 |  |
Vested (in shares) | (8,200) | (7,000) |  |
Forfeited (in shares) | (23,200) | (16,400) |  |
Balance (in shares) | 242,720 | 327,160 | 251,120 | 331,560
Weighted-Average Exercise Price |  |  |  |
Outstanding at beginning of year (in USD per share) | $ 28.18 | $ 27.74 | $ 27.74 |
Granted (in USD per share) | 29.00 | 29.80 |  |
Vested (in USD per share) | 27.45 | 27.13 |  |
Forfeited (in USD per share) | 33.36 | 28.90 |  |
Balance (in USD per share) | $ 27.94 | $ 27.81 | $ 28.18 | $ 27.74
Weighted-Average Remaining Contractual Life in Years |  |  |  |
Outstanding | 7 years 2 months 8 days | 7 years 7 months 9 days | 7 years 3 months 21 days | 7 years 9 months 7 days
Granted | 9 years 10 months 2 days | 9 years 10 months 24 days |  |
Vested | 7 years 2 months 8 days | 7 years 9 months 21 days |  |
Forfeited | 8 years 10 months 24 days | 8 years 5 months 26 days |  |
Aggregate Intrinsic Value |  |  |  |
Outstanding | $ 1,188 | $ 975 | $ 975 |
Granted | 11 | 0 |  |
Vested | 0 | 22 |  |
Forfeited | 0 | 27 |  |
Outstanding | $ 13 | $ 807 | $ 1,188 | $ 975

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