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SHAREHOLDERS EQUITY - Summary of Dividend payments (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified | 3 Months Ended | 12 Months Ended
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Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2012 | Sep. 30, 2012 | Jun. 30, 2012 | Mar. 31, 2012 | Dec. 31, 2011 | Sep. 30, 2011 | Jun. 30, 2011 | Mar. 31, 2011 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Stockholders' Equity Note [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Record Date | Dec. 09, 2013 | Sep. 16, 2013 | Jun. 17, 2013 | Mar. 18, 2013 | Dec. 10, 2012 | Sep. 17, 2012 | Jun. 18, 2012 | Mar. 19, 2012 | Dec. 05, 2011 | Aug. 19, 2011 | May 23, 2011 | Mar. 17, 2011 |  |  |
Payment Date | Dec. 16, 2013 | Sep. 23, 2013 | Jun. 24, 2013 | Mar. 25, 2013 | Dec. 17, 2012 | Sep. 24, 2012 | Jun. 25, 2012 | Mar. 26, 2012 | Dec. 19, 2011 | Aug. 26, 2011 | May 31, 2011 | Mar. 24, 2011 |  |  |
Dividend (per share) | $ 0.14 | $ 0.14 | $ 0.14 | $ 0.14 | $ 0.13 | $ 0.13 | $ 0.13 | $ 0.13 | $ 0.12 | $ 0.12 | $ 0.12 | $ 0.12 | $ 0.56 | $ 0.52 | $ 0.48
Dividend paid, amount | $ 1,577 | $ 1,575 | $ 1,573 | $ 1,569 | $ 1,447 | $ 1,439 | $ 1,439 | $ 1,437 | $ 1,336 | $ 1,365 | $ 1,429 | $ 1,415 | $ 6,294 | $ 5,762 | $ 5,545

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- Definition Aggregate dividends paid during the period for each share of common stock outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: 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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