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COMMON STOCK REPURCHASES AND CASH DIVIDENDS Cash Dividends (Details) $ / shares in Units, $ in Thousands | 1 Months Ended | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
Jan. 31, 2018 Quarter $ / shares | Sep. 30, 2018 USD ($) $ / shares | Sep. 30, 2017 USD ($) $ / shares | Sep. 30, 2018 USD ($) $ / shares | Sep. 30, 2017 USD ($) $ / shares
Dividends Declared and Paid [Line Items] |  |  |  |  |
Common Stock, Dividends, Number of Quarterly Distributions Declared, Current Fiscal Year | Quarter | 4 |  |  |  |
Common Stock, Dividends, Per Share, Declared, Current Fiscal Year, First Quarter | $ 0.16 |  |  |  |
Common Stock, Dividends Per Share Declared, Current Fiscal Year, Second Quarter | 0.16 |  |  |  |
Common Stock, Dividends Per Share Declared, Current Fiscal Year, Third Quarter | 0.16 |  |  |  |
Common Stock, Dividends Per Share Declared, Current Fiscal Year, Fourth Quarter | $ 0.16 |  |  |  |
Payments of Dividends | $ |  | $ 4,692 | $ 4,164 | $ 14,172 | $ 12,463
Common Stock, Dividends, Per Share, Cash Paid |  | $ 0.16 | $ 0.14 | $ 0.48 | $ 0.42

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