SECURITIES: (Details 2) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Amortized Cost
Due in one year or less	$ 7,607
Due after one but within five years	37,409
Due after five but within ten years	86,911
Due after ten years	78,564
Total of securities having specified maturity period	210,491
Mortgage-backed securities and collateralized mortgage obligations	670,455
TOTAL	880,946	920,897
Fair Value
Due in one year or less	7,700
Due after one but within five years	38,891
Due after five but within ten years	90,908
Due after ten years	86,946
Total of securities having specified maturities period	224,445
Mortgage-backed securities and collateralized mortgage obligations	672,608
TOTAL	$ 897,053	$ 914,560