Note 8 - Borrowed Funds (Details Textual) - USD ($)
$ in Thousands
12 Months Ended
Dec. 01, 2016
Jun. 30, 2015
Dec. 14, 2006
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Jun. 30, 2016
Jul. 01, 2015
Sep. 01, 2009
Advances from Federal Home Loan Banks       $ 58,537 $ 135,802        
Line of Credit Facility, Maximum Month-end Outstanding Amount       145,100 160,100        
Junior Subordinated Debenture Owed to Unconsolidated Subsidiary Trust       $ 10,310 $ 10,310        
Debt Instrument, Interest Rate During Period       2.35% 1.99% 1.93%      
Interest Paid, Net           $ 884      
Interest Payable       $ 242 $ 11,165        
Repayments of Subordinated Debt   $ 11,000              
Subordinated Debt   $ 14,000   10,000 14,000 $ 25,000      
Debentures [Member]                  
Interest Payable       13 11        
Notes [Member]                  
Interest Payable       $ 39 $ 10,900        
Federal Home Loan Bank Advances [Member] | Minimum [Member]                  
Debt Instrument, Term       270 days          
Federal Home Loan Bank Advances [Member] | Maximum [Member]                  
Debt Instrument, Term       15 years          
Trust Preferred Securities [Member] | First National Community Statutory Trust 1 [Member]                  
Proceeds from Issuance of Trust Preferred Securities     $ 10,000            
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate     7.02%            
Trust Preferred Securities [Member] | First National Community Statutory Trust 1 [Member] | London Interbank Offered Rate (LIBOR) [Member]                  
Debt Instrument, Basis Spread on Variable Rate       1.67%          
Junior Subordinated Debt [Member] | First National Community Statutory Trust 1 [Member]                  
Junior Subordinated Debenture Owed to Unconsolidated Subsidiary Trust     $ 10,300            
Debt Instrument, Interest Rate, Stated Percentage     7.02%            
Subordinated Debt [Member]                  
Debt Instrument, Interest Rate, Stated Percentage   9.00%         9.00% 4.50%  
Percent of Principal Amount Outstanding, Prepayment   44.00%              
Repayments of Subordinated Debt $ 4,000                
Subordinated Debt [Member] | First Payment [Member]                  
Percent of Principal Amount Outstanding to Be Repaid         16.00%        
Debt Instrument Principal Amount Payable         $ 4,000        
Subordinated Debt [Member] | Second Payment [Member]                  
Percent of Principal Amount Outstanding to Be Repaid         20.00%        
Debt Instrument Principal Amount Payable         $ 5,000        
Subordinated Debt [Member] | Final Payment [Member]                  
Percent of Principal Amount Outstanding to Be Repaid         20.00%        
Debt Instrument Principal Amount Payable         $ 5,000        
Subordinated Debt [Member] | Maximum [Member]                  
Interest Payable       $ 11,000          
Debt Instrument, Face Amount                 $ 25,000
Federal Home Loan Bank of Pittsburgh [Member]                  
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged       427,800 377,500        
Federal Home Loan Bank, Advances, General Debt Obligations, Maximum Amount Available       298,100          
Advances from Federal Home Loan Banks       58,500          
Letters of Credit Outstanding, Amount       75,000 $ 0        
Federal Funds Purchased [Member]                  
Line of Credit Facility, Maximum Borrowing Capacity       20,000          
Federal Reserve Bank Advances [Member]                  
Line of Credit Facility, Maximum Borrowing Capacity       14,400          
Loans Pledged as Collateral       $ 25,900