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STOCKHOLDERS' EQUITY (Dividends) (Details) - USD ($) $ / shares in Units, $ in Thousands |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jan. 26, 2018 | Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Dividends on Common Stock |  |  |  |  |  |  |  |  |  |  |  |
Dividends declared (in dollars per share) |  | $ 0.08 | $ 0.08 | $ 0.08 | $ 0.08 | $ 0.08 | $ 0.08 | $ 0.08 | $ 0.08 | $ 0.32 | $ 0.32 | $ 0.26
Dividend Amount |  | $ 2,057 | $ 2,063 | $ 2,078 | $ 2,066 | $ 2,069 | $ 2,074 | $ 2,087 | $ 2,088 | $ 8,264 | $ 8,318 | $ 6,837
Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |
Dividends on Common Stock |  |  |  |  |  |  |  |  |  |  |  |
Dividends declared (in dollars per share) | $ 0.08 |  |  |  |  |  |  |  |  |  |  |

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- Definition Aggregate dividends declared during the period for each share of common stock outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
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- Definition Amount of paid and unpaid common stock dividends declared with the form of settlement in cash. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
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