SECURITIES: (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Amortized cost and fair value of investments classified as available for sale
TOTAL	$ 855,521	$ 876,796
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	12,618	21,005
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	14,414	6,719
Securities available-for-sale	853,725	891,082
U.S. Government entity mortgage-backed securities
Amortized cost and fair value of investments classified as available for sale
TOTAL	13,594	10,670
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	32	46
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	377	23
Securities available-for-sale	13,249	10,693
Mortgage-backed securities, residential
Amortized cost and fair value of investments classified as available for sale
TOTAL	261,878	208,705
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	3,200	5,089
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	4,073	630
Securities available-for-sale	261,005	213,164
Mortgage-backed securities, commercial
Amortized cost and fair value of investments classified as available for sale
TOTAL	4	9
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	4	9
Collateralized mortgage obligations
Amortized cost and fair value of investments classified as available for sale
TOTAL	353,499	441,500
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	1,021	2,141
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	6,344	6,007
Securities available-for-sale	348,176	437,634
State and municipal obligations
Amortized cost and fair value of investments classified as available for sale
TOTAL	217,365	206,291
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	3,954	8,475
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	2,396	59
Securities available-for-sale	218,923	214,707
Collateralized debt obligations
Amortized cost and fair value of investments classified as available for sale
TOTAL	9,181	9,621
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	4,411	5,254
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	1,224	0
Securities available-for-sale	$ 12,368	$ 14,875

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=65884222&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=73527792&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=66010992&loc=d3e26610-111562

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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-Paragraph 2
-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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