Annual report pursuant to Section 13 and 15(d)

Annual report pursuant to Section 13 and 15(d)

Property and Equipment, Net (Details Textual)

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Property and Equipment, Net (Details Textual) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Property and equipment, Net (Textual) [Abstract]    
Depreciation and amortization expense on property and equipment $ 3,636 $ 2,085