Borrowed Funds (Details) (USD $)	12 Months Ended		6 Months Ended	12 Months Ended				12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Jun. 30, 2013 Term notes payable to the FHLB of Pittsburgh:	Dec. 31, 2010 Term notes payable to the FHLB of Pittsburgh:	Dec. 31, 2013 Term notes payable to the FHLB of Pittsburgh:	Dec. 31, 2012 Term notes payable to the FHLB of Pittsburgh:	Dec. 31, 2013 Revolving line of credit, FHLB of Pittsburgh	Dec. 31, 2013 Securities sold under agreement to repurchase, due within one year	Dec. 31, 2012 Securities sold under agreement to repurchase, due within one year	Dec. 31, 2011 Securities sold under agreement to repurchase, due within one year
Borrowed Funds
Amount due within one year					$ 2,000			$ 156,198,000	$ 164,531,000
Due between one and two years, Amount					110,000,000	23,000
Due between two and three years, Amount					145,445,000	110,000,000
Due between three and four years, Amount					125,000,000	145,493,000
Due between four and five years, Amount					125,000,000	125,000,000
Due between five and ten years, Amount					220,000,000	315,000,000
Total borrowed funds	881,645,000	860,047,000			725,447,000	695,516,000
Due within one year, Average Rate (as a percent)					1.78%			0.31%	0.32%
Due between one and two years, Avg. Rate (as a percent)					2.53%	1.75%
Due between two and three years, Avg. Rate (as a percent)					3.24%	2.53%
Due between three and four years, Avg. Rate (as a percent)					3.68%	3.24%
Due between four and five years, Avg. Rate (as a percent)					4.03%	3.68%
Due between five and ten years, Avg. Rate (as a percent)					4.07%	4.25%
Proceeds from advances	30,000,000		30,000,000
Maturities between seven and ten years, weighted effective interest rate (as a percent)			2.03%
Restructured borrowings				695,000,000
Percentage reduction in annual cost due to restructuring				0.22%
Extension in maturity period due to restructuring				3 years 6 months
Penalty in conjunction with restructuring				52,200,000
Amount of penalty in conjunction with restructuring which remains to be amortized					28,700,000
Maximum commitment							150,000,000
Average amount of agreements outstanding								150,100,000	154,600,000	140,800,000
Maximum amount of outstanding security repurchase agreements								$ 171,800,000	$ 176,500,000	$ 151,800,000