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Significant Accounting Policies-Concentration of Credit Risk (Tables)
12 Months Ended
Dec. 31, 2012
Accounting Policies [Abstract]  
Schedule Of Revenue By Major Customers By Reporting Segments [Table Text Block]
 
Customer
2012
2011
2010
A
19%
15%
15%
B
14%
17%
11%
C*
14%
10%
-
D*
-
24%
45%
E
-
10%
10%
F
-
10%
-
Total
47%
86%
81%
 
* Customers C and D are related parties.