Quarterly report pursuant to Section 13 or 15(d)

Property and Equipment (Details 1)

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Property and Equipment (Details 1) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Depreciation and amortization expense for property and equipment    
Depreciation and amortization expense $ 1,123 $ 1,037