PREMISES AND EQUIPMENT: (Details Textual) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Property, Plant and Equipment, Gross [Abstract]
Depreciation	$ 4,290,000	$ 3,740,000	$ 2,840,000
Rent expense	$ 1,000,000	$ 1,100,000	$ 882,000