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Employee Benefit Plan
12 Months Ended
Dec. 31, 2014
Compensation and Retirement Disclosure [Abstract]  
Compensation and Employee Benefit Plans [Text Block]
11.
Employee Benefit Plan
 
The Company has a defined contribution plan for substantially all employees. Profit sharing contributions may be made at the discretion of the Board of Directors. Effective January 1, 2006, the Company amended its defined contribution plan. Under the amended plan, the maximum contribution for the Company is 4% of gross wages. Employer contributions to the plan totaled $98,000 and $90,000 for the years ended December 31, 2014 and 2013, respectively.