SHAREHOLDERS' EQUITY - Deemed Stock Repurchase (Details) - USD ($) shares in Thousands, $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
|
| Stockholders' Equity Note [Abstract] | |||
| Shares of stock deemed repurchased (in shares) | 459 | 506 | 169 |
| Amount recorded as financing activity | $ 2,905 | $ 5,186 | $ 2,565 |