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Organization and Significant Accounting Policies (Tables)
12 Months Ended
Dec. 31, 2012
Accounting Policies [Abstract]  
Schedule of Entity Wide Information by Major Customers by Reporting Segments [Table Text Block]
The percentage of sales derived from significant customers is as follows:

 

    Years Ended December 31,  
    2012     2011  
Customer A     37 %     21 %
Customer B     14       15  
Customer C     13       18  
Customer D     **       13  

 

**Represents less than 10% of sales.

Fair Value, by Balance Sheet Grouping [Table Text Block]

DCT estimates the fair value of the options on the grant date using the Black-Scholes valuation model under the following assumptions:

 

    Years Ended December 31,  
    2012     2011  
Weighted average expected option life in years     3.0       3.0  
Weighted average expected volatility     231 %     134 %
Expected dividend yield     0 %     0 %
Weighted average risk free interest rate     0.51 %     1.01 %