SECURITIES: (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Amortized cost and fair value of investments classified as available for sale
TOTAL	$ 880,946	$ 920,897
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	24,296	20,347
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	8,189	26,684
Securities available-for-sale	897,053us-gaap_AvailableForSaleSecurities	914,560us-gaap_AvailableForSaleSecurities
U.S. Government entity mortgage-backed securities
Amortized cost and fair value of investments classified as available for sale
TOTAL	1,411	1,623
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	56	10
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	0	0
Securities available-for-sale	1,467	1,633
Mortgage-backed securities, residential
Amortized cost and fair value of investments classified as available for sale
TOTAL	180,673	191,995
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	7,593	7,761
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	330	1,992
Securities available-for-sale	187,936	197,764
Mortgage-backed securities, commercial
Amortized cost and fair value of investments classified as available for sale
TOTAL	17	4,642
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	0	1
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	0	252
Securities available-for-sale	17	4,391
Collateralized mortgage obligations
Amortized cost and fair value of investments classified as available for sale
TOTAL	489,765	521,148
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	2,513	1,492
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	7,623	15,899
Securities available-for-sale	484,655	506,741
State and municipal obligations
Amortized cost and fair value of investments classified as available for sale
TOTAL	198,875	190,521
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	9,019	6,388
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	219	1,922
Securities available-for-sale	207,675	194,987
Collateralized debt obligations
Amortized cost and fair value of investments classified as available for sale
TOTAL	10,205	10,968
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	5,115	4,695
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	17	6,619
Securities available-for-sale	$ 15,303	$ 9,044

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

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