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EQUITY AWARDS - Schedule of Nonvested Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2020 | Jun. 30, 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) | 35,000 | 23,000 |  |
Vested (in shares) | (35,740) | (37,940) |  |
Forfeited (in shares) | (23,200) | (16,400) |  |
Balance (in shares) | 227,180 | 300,220 | 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) | 27.64 | 29.77 |  |
Vested (in USD per share) | 26.74 | 27.28 |  |
Forfeited (in USD per share) | 31.93 | 30.49 |  |
Balance (in USD per share) | $ 27.96 | $ 27.89 | $ 28.18 | $ 27.74
Weighted-Average Remaining Contractual Life in Years |  |  |  |
Outstanding | 7 years 2 months 1 day | 7 years 4 months 17 days | 7 years 3 months 21 days | 7 years 9 months 7 days
Granted | 9 years 8 months 19 days | 9 years 8 months 8 days |  |
Vested | 6 years 6 months 3 days | 7 years 6 months 14 days |  |
Forfeited | 8 years 1 month 28 days | 8 years 8 months 15 days |  |
Aggregate Intrinsic Value |  |  |  |
Outstanding | $ 1,188 | $ 975 | $ 975 |
Granted | 41 | 32 |  |
Vested | 36 | 163 |  |
Forfeited | 0 | 52 |  |
Outstanding | $ 170 | $ 1,087 | $ 1,188 | $ 975

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