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STOCK REPURCHASE PROGRAM (Details Textual) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | Oct. 31, 2017
Equity, Class of Treasury Stock [Line Items] |  |  |  |
Payments For Repurchase Of Common Stock | $ 15,190 | $ 10,967 | $ 9,858 |
Stock Repurchased and Retired During Period, Shares | 548,539 | 410,983 | 354,741 |
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased | 1,016,636 |  |  |
Stock Repurchase Program Additional Number Of Shares Authorized To Be Repurchased |  |  |  | 1,000,000
Stock Repurchase Program, Number of Shares Authorized to be Repurchased | 7,500,000 |  |  |

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- Definition The cash outflow to reacquire common stock during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3291-108585 + Details
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