Quarterly report pursuant to Section 13 or 15(d)

Benefit Plans (Details Textuals)

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Benefit Plans (Details Textuals) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 3 Months Ended
Mar. 31, 2014
Y
Dec. 31, 2013
Mar. 31, 2014
Pension Benefits [Member]
Mar. 31, 2013
Pension Benefits [Member]
Mar. 31, 2014
Post Retirement Benefits [Member]
Mar. 31, 2013
Post Retirement Benefits [Member]
Mar. 31, 2014
Equity Securities [Member]
Mar. 31, 2014
Covered Bonds [Member]
Mar. 31, 2014
Cash and Cash Equivalents [Member]
Benefit Plans (Textuals) [Abstract]                  
Employees retirement age for health care and life insurance benefits under unfunded defined benefit post-retirement plan 55                
Employees vesting service under defined benefit post-retirement plan, minimum 10 Years                
Life insurance coverage, maximum $ 50                
Average duration of plan assets investment in bonds, years 12 years                
Defined Benefit Plan, Actual Plan Asset Allocations             51.00% 48.00% 1.00%
Defined Benefit Plan, Target Plan Asset Allocations Range Minimum             20.00% 50.00%  
Defined Benefit Plan, Target Plan Assets Allocation Range Maximum             80.00% 50.00%  
Base pay contributed to the plan up to first 4%                
Fair value of plan assets, Percentage 100.00% 100.00%              
Curtailments     $ 0 $ 0 $ 0 $ 0