OTHER BORROWINGS: (Details textual) (USD $)									12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2012 PNB Statutory Trust I	Dec. 31, 2007 PNB Statutory Trust I	Dec. 31, 2013 Minimum	Dec. 31, 2012 Minimum	Dec. 31, 2013 Maximum	Dec. 31, 2012 Maximum	Dec. 31, 2013 LIBOR PNB Statutory Trust I
Debt Instrument [Line Items]
FHLB advances	$ 58,288,000	$ 119,705,000
Advances, contractual due	57,500,000	118,600,000
Premium of federal home loan bank advance	800,000	1,100,000
Branch of FHLB bank, interest rate (percent)					3.10%	2.90%	6.60%	6.60%
General debt obligations, collateral pledged	15,900,000	20,900,000
General debt obligations, maximum amount available	193,800,000
Prefered stock issued as consideration				6,000,000
Prefered stock issued as consideration fair value			$ 6,200,000
Basis spread on variable rate									2.30%