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STOCKHOLDERS' EQUITY - Dividend Activity (Details) - USD ($) $ / shares in Units, $ in Thousands |  |  |  |  |  |  | 12 Months Ended
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Nov. 29, 2019 | Mar. 15, 2019 | Nov. 23, 2018 | Aug. 24, 2018 | May 25, 2018 | Mar. 09, 2018 | Dec. 31, 2019 | Dec. 31, 2018
Stockholders' Equity Note [Abstract] |  |  |  |  |  |  |  |
Special dividend per common share (in dollars per share) | $ 0.40 | $ 0.08 | $ 0.18 | $ 0.25 | $ 1.76 |  |  |
Special dividend amount | $ 4,608 | $ 912 | $ 2,048 | $ 2,844 | $ 20,022 |  |  |
Dividend per common share (in dollars per share) |  | $ 0.16 | $ 0.16 | $ 0.15 | $ 0.14 | $ 0.13 | $ 0.64 | $ 2.77
Dividend amount |  | $ 1,824 | $ 1,820 | $ 1,707 | $ 1,592 | $ 1,479 | $ 7,344 | $ 31,512

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