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GOODWILL AND INTANGIBLE ASSETS: (Details) - USD ($) $ in Thousands | Dec. 31, 2015 | Dec. 31, 2014
--- | --- | ---
Finite-Lived Intangible Assets [Line Items] |  |
Gross Amount | $ 15,607 | $ 15,505
Accumulated Amortization | 12,429 | 11,604
Customer list intangible |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Amount | 4,771 | 4,669
Accumulated Amortization | 4,309 | 4,227
Core deposit intangible |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Amount | 10,836 | 10,836
Accumulated Amortization | $ 8,120 | $ 7,377

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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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