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Employee Benefit Plans (Details Textual) (USD $)
3 Months Ended
Mar. 31, 2013
Profit-sharing plan [Member]
 
Employee Benefit Plans (Textual) [Abstract]  
Eligible employee contributions 3.00%
Defined benefit plan contributions by employer percent 6.00%
Pension plans, defined benefit [Member]
 
Employee Benefit Plans (Textual) [Abstract]  
Minimum required contribution 665,000
Employer contribution 0