SECURITIES: (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Amortized cost and fair value of investments classified as available for sale
TOTAL	$ 876,796	$ 880,946
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	21,005	24,296
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	6,719	8,189
Securities available-for-sale	891,082	897,053
U.S. Government entity mortgage-backed securities
Amortized cost and fair value of investments classified as available for sale
TOTAL	10,670	1,411
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	46	56
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	23	0
Securities available-for-sale	10,693	1,467
Mortgage-backed securities, residential
Amortized cost and fair value of investments classified as available for sale
TOTAL	208,705	180,673
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	5,089	7,593
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	630	330
Securities available-for-sale	213,164	187,936
Mortgage-backed securities, commercial
Amortized cost and fair value of investments classified as available for sale
TOTAL	9	17
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	0	0
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	0	0
Securities available-for-sale	9	17
Collateralized mortgage obligations
Amortized cost and fair value of investments classified as available for sale
TOTAL	441,500	489,765
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	2,141	2,513
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	6,007	7,623
Securities available-for-sale	437,634	484,655
State and municipal obligations
Amortized cost and fair value of investments classified as available for sale
TOTAL	206,291	198,875
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	8,475	9,019
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	59	219
Securities available-for-sale	214,707	207,675
Collateralized debt obligations
Amortized cost and fair value of investments classified as available for sale
TOTAL	9,621	10,205
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	5,254	5,115
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	0	17
Securities available-for-sale	$ 14,875	$ 15,303

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 25
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=51813488&loc=d3e22054-111558

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 5
-Subparagraph (aa)
-URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27232-111563

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=49167202&loc=d3e26610-111562

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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-Subparagraph (c)
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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.2)
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