SECURITIES: (Details 3) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Less Than 12 Months
Fair Value	$ 502,714	$ 67,063
Unrealized Losses	(17,370)	(352)
More Than 12 Months
Fair Value	45,958	4,032
Unrealized Losses	(9,314)	(7,882)
Total
Fair Value	548,672	71,095
Unrealized Losses	(26,684)	(8,234)
Mortgage-backed securities, residential
Less Than 12 Months
Fair Value	52,524	7,245
Unrealized Losses	(1,645)	(13)
More Than 12 Months
Fair Value	6,022	0
Unrealized Losses	(347)	0
Total
Fair Value	58,546	7,245
Unrealized Losses	(1,992)	(13)
Mortgage-backed securities, commercial
Less Than 12 Months
Fair Value	0	5,086
Unrealized Losses	0	(16)
More Than 12 Months
Fair Value	4,357	0
Unrealized Losses	(252)	0
Total
Fair Value	4,357	5,086
Unrealized Losses	(252)	(16)
Collateralized mortgage obligations
Less Than 12 Months
Fair Value	406,291	46,121
Unrealized Losses	(13,979)	(246)
More Than 12 Months
Fair Value	29,588	0
Unrealized Losses	(1,920)	0
Total
Fair Value	435,879	46,121
Unrealized Losses	(15,899)	(246)
State and municipal obligations
Less Than 12 Months
Fair Value	43,899	8,611
Unrealized Losses	(1,746)	(77)
More Than 12 Months
Fair Value	2,305	0
Unrealized Losses	(176)	0
Total
Fair Value	46,204	8,611
Unrealized Losses	(1,922)	(77)
Collateralized debt obligations
Less Than 12 Months
Fair Value	0	0
Unrealized Losses	0	0
More Than 12 Months
Fair Value	3,686	4,032
Unrealized Losses	(6,619)	(7,882)
Total
Fair Value	3,686	4,032
Unrealized Losses	$ (6,619)	$ (7,882)