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STOCKHOLDERS' EQUITY - NARRATIVE (Details) - USD ($) |  | 3 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Feb. 11, 2021 | Mar. 31, 2021 | Mar. 31, 2020 | Feb. 09, 2021 | Oct. 24, 2014 | Nov. 01, 2007
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |
Shelf Registration, Amount of Capital Authorized for Future Issuance, Value |  |  |  | $ 250,000,000 |  |
Stock Issued During Period, Maximum Value Authorized For Issuance | $ 50,000,000 |  |  |  |  |
Common Stock Issued, Commission Fee, Percentage | 2.25% |  |  |  |  |
Sale of stock, number of shares issued in transaction (in shares) |  | 3,300,000 |  |  |  |
Consideration received, net |  | $ 35,900,000 |  |  |  |
Stock issuance costs |  | $ 1,200,000 |  |  |  |
Repurchased shares (in shares) |  |  | 2,000,000.0 |  |  |
Repurchased shares, value |  |  | $ 11,975,000 |  |  |
Stock repurchase program, average cost (in dollars per share) |  |  | $ 5.95 |  |  |
Treasury Stock |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |
Repurchased shares (in shares) |  |  | 2,012,766 |  |  |
Repurchased shares, value |  |  | $ 11,975,000 |  |  |
Stock Repurchase Program |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |
Stock repurchase program, authorized amount |  |  |  |  |  | $ 50,000,000.0
Stock repurchase program, additional authorized amount |  |  |  |  | $ 30,000,000.0 |

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