Segment Reporting and Significant Concentration (Details Textual)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Segment Reporting and Significant Concentration (Textual) [Abstract]
Number of reportable segment	1
Segment Reporting and Significant Concentration (Additional Textual) [Abstract]
Number of major customers	4
Americas [Member]
Segment Reporting and Significant Concentration (Textual) [Abstract]
Revenues attributable to operations in Americas	87.00%	85.00%