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Retirement Plan (Tables)
12 Months Ended
Dec. 31, 2012
Compensation and Retirement Disclosure [Abstract]  
Schedule of Changes in Projected Benefit Obligations [Table Text Block]

The Company uses a measurement date of December 31, for the Defined Benefit Plan. The changes in projected benefit obligation, plan assets and details of the funded status of the Plan are as follows:

 

  December 31, 
  2011  2012 
  (in thousands) 
Change in projected benefit obligation:        
Benefit obligation at beginning of year $1,713   2,425 
Service cost  -   - 
Interest cost  33   50 
Actuarial loss (gain)  679   (141)
Benefit obligation at end of year  2,425   2,334 
Change in plan assets:        
Fair value at beginning of year  2,176   2,305 
Actual return on plan assets  27   24 
Employer contribution  102   220 
Fair value at end of year  2,305   2,549 
Funded status $(120)  215 
Amounts recognized in the balance sheet consist of:        
Prepaid pension costs $198   457 
Accrued pension liabilities  (318)  (242)
Net amount recognized $(120)  215 
Schedule of Net Benefit Costs [Table Text Block]

For the years ended December 31, 2010, 2011 and 2012, the net periodic pension cost consisted of the following:

 

  Year Ended December 31, 
  2010  2011  2012 
  (in thousands) 
Service cost $-   -   - 
Interest cost  29   33   50 
Expected return on plan assets  (43)  (44)  (48)
Net amortization  27   36   69 
Net periodic pension cost $13   25   71 
Defined Benefit Plan Weighted Average Assumptions Used In Calculating Benefit Obligation [Table Text Block]

At December 31, 2011 and 2012, the weighted-average assumptions used in computing the benefit obligation are as follows:

 

  December 31, 
  2011  2012 
       
Discount rate  2.00%  1.75%
Rate of increase in compensation levels  5.00%  4.00%
Scheduleofdefinedbenfitplanassuptionsusedcalculatingnetperiodicbenefit [Table Text Block]

For the years ended December 31, 2010, 2011 and 2012, the weighted average assumptions used in computing net periodic benefit cost are as follows:

 

  Year Ended December 31, 
  2010  2011  2012 
  Whole 
    
Discount rate  2.00%  2.00%  1.75%
Rate of increase in compensation levels  4.00%  5.00%  4.00%
Expected long-term rate of return on pension assets  2.00%  2.00%  1.75%