SECURITIES: (Details 3) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Less Than 12 Months
Fair Value	$ 57,332	$ 502,714
Unrealized Losses	(163)	(17,370)
More Than 12 Months
Fair Value	299,536	45,958
Unrealized Losses	(8,026)	(9,314)
Total
Fair Value	356,868	548,672
Unrealized Losses	(8,189)	(26,684)
Mortgage-backed securities, residential
Less Than 12 Months
Fair Value	0	52,524
Unrealized Losses	0	(1,645)
More Than 12 Months
Fair Value	23,849	6,022
Unrealized Losses	(330)	(347)
Total
Fair Value	23,849	58,546
Unrealized Losses	(330)	(1,992)
Mortgage-backed securities, commercial
Less Than 12 Months
Fair Value		0
Unrealized Losses		0
More Than 12 Months
Fair Value		4,357
Unrealized Losses		(252)
Total
Fair Value		4,357
Unrealized Losses		(252)
Collateralized mortgage obligations
Less Than 12 Months
Fair Value	50,832	406,291
Unrealized Losses	(128)	(13,979)
More Than 12 Months
Fair Value	264,940	29,588
Unrealized Losses	(7,495)	(1,920)
Total
Fair Value	315,772	435,879
Unrealized Losses	(7,623)	(15,899)
State and municipal obligations
Less Than 12 Months
Fair Value	6,500	43,899
Unrealized Losses	(35)	(1,746)
More Than 12 Months
Fair Value	10,547	2,305
Unrealized Losses	(184)	(176)
Total
Fair Value	17,047	46,204
Unrealized Losses	(219)	(1,922)
Collateralized debt obligations
Less Than 12 Months
Fair Value	0	0
Unrealized Losses	0	0
More Than 12 Months
Fair Value	200	3,686
Unrealized Losses	(17)	(6,619)
Total
Fair Value	200	3,686
Unrealized Losses	$ (17)	$ (6,619)

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