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Benefit Plans (Details Textual) (USD $)
 1 Months Ended 12 Months Ended 12 Months Ended
Jan. 31, 2000
Dec. 31, 2012
Age
Hour
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2012
Maximum [Member]
Dec. 31, 2012
Minimum [Member]
Dec. 31, 2012
Defined Benefit Postretirement Life Insurance [Member]
Dec. 31, 2011
Defined Benefit Postretirement Life Insurance [Member]
Dec. 31, 2010
Defined Benefit Postretirement Life Insurance [Member]
Apr. 26, 2010
Employee Stock Ownership Plan ESOP Plan [Member]
Dec. 31, 2012
Pension Plans, Defined Benefit [Member]
Age
Dec. 31, 2011
Pension Plans, Defined Benefit [Member]
Dec. 31, 2010
Pension Plans, Defined Benefit [Member]
Dec. 31, 2012
Pension Plans, Defined Benefit [Member]
Fixed income funds [Member]
Dec. 31, 2012
Pension Plans, Defined Benefit [Member]
Equity funds [Member]
Benefit Plans (Textual) [Abstract]                              
Minimum eligibility for full-time employees, age                     21        
Period of service credit by employee                     1 year        
Effective discount rate                     0.25%        
Targeted asset allocation on fixed income                           25.00% 75.00%
Amount contributed to pension plan, Expected in future                     $ 500,000        
Amount contributed to pension plan   306,000 240,000               306,000 240,000 200,000    
Amount of accumulated benefit obligation for the defined benefit pension plan                     5,100,000 4,200,000      
Percentage of employee for which company makes specified contribution         6.00% 2.00%                  
Company loaned the ESOP                   570,000          
Related effect on net income recognized expense             21,000 104,000 36,000            
Benefit Plans (Additional Textual) [Abstract]                              
Percentage of first employee compensation for which company makes matching contribution   1.00%                          
Company contribution on employee specific contribution   50.00%                          
Number of hours in service required for the contribution to be allocated   1,000                          
Minimum eligibility for employees under 401(k) Plan, age   19                          
Number of plan service years after which employer matching contribution vest   2 years                          
Expense attributable to the Plan amounted   219,000 200,000 164,000                      
Percentage of vested participants 100.00%                            
Participants years of credited service 2 years                            
Compensation expense for ESOP   $ 0 $ 0 $ 0                      
Shares of the Company held by the ESOP   134,609 65,633 53,167