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EARNINGS PER SHARE - Stock Buyback (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands | 1 Months Ended | 3 Months Ended |  |
--- | --- | --- | --- | ---
Sep. 30, 2015 | Mar. 31, 2020 | Dec. 18, 2019 | May 31, 2018
EARNINGS PER SHARE |  |  |  |
Authorized amount | $ 150,000 |  |  |
Authorized program period repurchase | 30 months |  |  |
Authorized amount increase |  |  | $ 25,100 | $ 50,000
Remaining authorized repurchase amount |  | $ 42,800 |  |
Amount paid to repurchase shares |  | $ 7,248 |  |
Number of shares repurchased |  | 170 |  |
Average repurchase price per share |  | $ 42.59 |  |

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