| Financial Assets And Liabilities Carried At Fair Value On Recurring Basis | 
        
 The following table presents the Company’s financial assets and financial liabilities carried at fair value on a recurring basis as of December 31, 2012 and December 31, 2011: 
  
|   | 
  | 
  | 
  | 
  | 
Fair Value Measurements at December 31, 2012 Using | 
  | 
 
|   | 
  | 
Quoted Prices in | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
 
|   | 
  | 
Active Markets | 
  | 
  | 
Significant Other | 
  | 
  | 
Significant | 
  | 
  | 
  | 
  | 
 
|   | 
  | 
for Identical | 
  | 
  | 
Observable Inputs | 
  | 
  | 
Unobservable | 
  | 
  | 
  | 
  | 
 
|   | 
  | 
Assets (Level 1) | 
  | 
  | 
(Level 2) | 
  | 
  | 
Inputs (Level 3) | 
  | 
  | 
Total | 
  | 
 
| Assets Measured on a Recurring Basis: | 
  | 
(In Thousands) | 
  | 
 
| Available-for-sale securities: | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
 
| U.S. Treasury and government sponsored agencies | 
  | 
$ | 
- | 
  | 
  | 
$ | 
28,386 | 
  | 
  | 
$ | 
- | 
  | 
  | 
$ | 
28,386 | 
  | 
 
| Mortgage-backed securities | 
  | 
  | 
- | 
  | 
  | 
  | 
73,466 | 
  | 
  | 
  | 
- | 
  | 
  | 
  | 
73,466 | 
  | 
 
| State and municipal securities | 
  | 
  | 
- | 
  | 
  | 
  | 
118,177 | 
  | 
  | 
  | 
- | 
  | 
  | 
  | 
118,177 | 
  | 
 
| Corporate debt | 
  | 
  | 
- | 
  | 
  | 
  | 
13,848 | 
  | 
  | 
  | 
- | 
  | 
  | 
  | 
13,848 | 
  | 
 
| Interest rate swap agreements | 
  | 
  | 
- | 
  | 
  | 
  | 
389 | 
  | 
  | 
  | 
- | 
  | 
  | 
  | 
389 | 
  | 
 
|   | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
 
| Liabilities Measured on a Recurring Basis: | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
 
| Interest rate swap agreements | 
  | 
$ | 
- | 
  | 
  | 
$ | 
389 | 
  | 
  | 
$ | 
- | 
  | 
  | 
$ | 
389 | 
  | 
 
 
  
|   | 
  | 
  | 
  | 
  | 
Fair Value Measurements at December 31, 2011 Using | 
  | 
 
|   | 
  | 
Quoted Prices in | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
 
|   | 
  | 
Active Markets | 
  | 
  | 
Significant Other | 
  | 
  | 
Significant | 
  | 
  | 
  | 
  | 
 
|   | 
  | 
for Identical | 
  | 
  | 
Observable Inputs | 
  | 
  | 
Unobservable | 
  | 
  | 
  | 
  | 
 
|   | 
  | 
Assets (Level 1) | 
  | 
  | 
(Level 2) | 
  | 
  | 
Inputs (Level 3) | 
  | 
  | 
Total | 
  | 
 
| Assets Measured on a Recurring Basis: | 
  | 
(In Thousands) | 
  | 
 
| Available-for-sale securities | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
 
| U.S. Treasury and government sponsored agencies | 
  | 
$ | 
- | 
  | 
  | 
$ | 
99,622 | 
  | 
  | 
$ | 
- | 
  | 
  | 
$ | 
99,622 | 
  | 
 
| Mortgage-backed securities | 
  | 
  | 
- | 
  | 
  | 
  | 
92,580 | 
  | 
  | 
  | 
- | 
  | 
  | 
  | 
92,580 | 
  | 
 
| State and municipal securities | 
  | 
  | 
- | 
  | 
  | 
  | 
100,526 | 
  | 
  | 
  | 
- | 
  | 
  | 
  | 
100,526 | 
  | 
 
| Corporate debt | 
  | 
  | 
- | 
  | 
  | 
  | 
1,081 | 
  | 
  | 
  | 
- | 
  | 
  | 
  | 
1,081 | 
  | 
 
| Interest rate swap agreements | 
  | 
  | 
- | 
  | 
  | 
  | 
617 | 
  | 
  | 
  | 
- | 
  | 
  | 
  | 
617 | 
  | 
 
| Interest rate cap | 
  | 
  | 
- | 
  | 
  | 
  | 
9 | 
  | 
  | 
  | 
- | 
  | 
  | 
  | 
9 | 
  | 
 
| Total assets at fair value | 
  | 
$ | 
- | 
  | 
  | 
$ | 
294,435 | 
  | 
  | 
$ | 
- | 
  | 
  | 
$ | 
294,435 | 
  | 
 
|   | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
 
| Liabilities Measured on a Recurring Basis: | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
 
| Interest rate swap agreements | 
  | 
$ | 
- | 
  | 
  | 
$ | 
617 | 
  | 
  | 
$ | 
- | 
  | 
  | 
$ | 
617 | 
  | 
 
 
 | 
      
      
        | Financial Assets And Liabilities Carried At Fair Value On Nonrecurring Basis | 
        
 The carrying amount and estimated fair value of the Company’s financial instruments were as follows:: 
  
|   | 
  | 
  | 
  | 
  | 
Fair Value Measurements at December 31, 2012 Using | 
  | 
 
|   | 
  | 
Quoted Prices in | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
 
|   | 
  | 
Active Markets | 
  | 
  | 
Significant Other | 
  | 
  | 
Significant | 
  | 
  | 
  | 
  | 
 
|   | 
  | 
for Identical | 
  | 
  | 
Observable | 
  | 
  | 
Unobservable | 
  | 
  | 
  | 
  | 
 
|   | 
  | 
Assets (Level 1) | 
  | 
  | 
Inputs (Level 2) | 
  | 
  | 
Inputs (Level 3) | 
  | 
  | 
Total | 
  | 
 
| Assets Measured on a Nonrecurring Basis: | 
  | 
(In Thousands) | 
  | 
 
| Impaired loans, net of related allowance | 
  | 
$ | 
- | 
  | 
  | 
  | 
- | 
  | 
  | 
$ | 
33,883 | 
  | 
  | 
$ | 
33,883 | 
  | 
 
| Other real estate owned and repossessed assets | 
  | 
  | 
- | 
  | 
  | 
  | 
- | 
  | 
  | 
  | 
9,685 | 
  | 
  | 
  | 
9,685 | 
  | 
 
| Total assets at fair value | 
  | 
  | 
- | 
  | 
  | 
  | 
- | 
  | 
  | 
$ | 
43,568 | 
  | 
  | 
$ | 
43,568 | 
  | 
 
 
  
|   | 
  | 
  | 
  | 
  | 
Fair Value Measurements at December 31, 2011 Using | 
  | 
 
|   | 
  | 
Quoted Prices in | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
 
|   | 
  | 
Active Markets | 
  | 
  | 
Significant Other | 
  | 
  | 
Significant | 
  | 
  | 
  | 
  | 
 
|   | 
  | 
for Identical | 
  | 
  | 
Observable | 
  | 
  | 
Unobservable | 
  | 
  | 
  | 
  | 
 
|   | 
  | 
Assets (Level 1) | 
  | 
  | 
Inputs (Level 2) | 
  | 
  | 
Inputs (Level 3) | 
  | 
  | 
Total | 
  | 
 
| Assets Measured on a Nonrecurring Basis: | 
  | 
(In Thousands) | 
  | 
 
| Impaired loans, net of related allowance | 
  | 
$ | 
- | 
  | 
  | 
$ | 
- | 
  | 
  | 
$ | 
33,072 | 
  | 
  | 
$ | 
33,072 | 
  | 
 
| Other real estate owned | 
  | 
  | 
- | 
  | 
  | 
  | 
- | 
  | 
  | 
  | 
12,275 | 
  | 
  | 
  | 
12,275 | 
  | 
 
| Total assets at fair value | 
  | 
$ | 
- | 
  | 
  | 
$ | 
- | 
  | 
  | 
$ | 
45,347 | 
  | 
  | 
$ | 
45,347 | 
  | 
 
 
 | 
      
      
        | Carrying Amount And Estimated Fair Value Of Financial Instruments | 
        
 The Company’s financial assets and financial liabilities which are carried at fair value were as follows:. 
  
|   | 
  | 
December 31, | 
  | 
 
|   | 
  | 
2012 | 
  | 
  | 
2011 | 
  | 
 
|   | 
  | 
Carrying Amount | 
  | 
  | 
Fair Value | 
  | 
  | 
Carrying  Amount | 
  | 
  | 
Fair Value | 
  | 
 
|   | 
  | 
(In Thousands) | 
  | 
 
| Financial Assets: | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
 
| Level 2 Inputs: | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
 
| Debt securities available for sale | 
  | 
$ | 
233,877 | 
  | 
  | 
$ | 
233,877 | 
  | 
  | 
$ | 
293,809 | 
  | 
  | 
$ | 
293,809 | 
  | 
 
| Debt securities held to maturity | 
  | 
  | 
25,967 | 
  | 
  | 
  | 
27,350 | 
  | 
  | 
  | 
15,209 | 
  | 
  | 
  | 
15,999 | 
  | 
 
| Restricted equity securities | 
  | 
  | 
3,941 | 
  | 
  | 
  | 
3,941 | 
  | 
  | 
  | 
3,501 | 
  | 
  | 
  | 
3,501 | 
  | 
 
| Mortgage loans held for sale | 
  | 
  | 
25,826 | 
  | 
  | 
  | 
25,826 | 
  | 
  | 
  | 
17,859 | 
  | 
  | 
  | 
17,859 | 
  | 
 
| Bank owned life insurance contracts | 
  | 
  | 
57,014 | 
  | 
  | 
  | 
57,014 | 
  | 
  | 
  | 
40,390 | 
  | 
  | 
  | 
40,390 | 
  | 
 
| Derivatives | 
  | 
  | 
389 | 
  | 
  | 
  | 
389 | 
  | 
  | 
  | 
626 | 
  | 
  | 
  | 
626 | 
  | 
 
|   | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
 
| Level 3 Inputs: | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
 
| Loans, net | 
  | 
$ | 
2,336,924 | 
  | 
  | 
$ | 
2,327,780 | 
  | 
  | 
$ | 
1,808,712 | 
  | 
  | 
$ | 
1,811,612 | 
  | 
 
|   | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
 
| Financial Liabilities: | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
 
| Level 2 Inputs: | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
 
| Deposits | 
  | 
$ | 
2,511,572 | 
  | 
  | 
$ | 
2,516,320 | 
  | 
  | 
$ | 
2,143,887 | 
  | 
  | 
$ | 
2,150,308 | 
  | 
 
| Other borrowings | 
  | 
  | 
19,917 | 
  | 
  | 
  | 
19,917 | 
  | 
  | 
  | 
4,954 | 
  | 
  | 
  | 
5,377 | 
  | 
 
| Subordinated debentures | 
  | 
  | 
15,050 | 
  | 
  | 
  | 
15,050 | 
  | 
  | 
  | 
30,514 | 
  | 
  | 
  | 
27,402 | 
  | 
 
| Derivatives | 
  | 
  | 
389 | 
  | 
  | 
  | 
389 | 
  | 
  | 
  | 
617 | 
  | 
  | 
  | 
617 | 
  | 
 
 
 |