Annual report pursuant to Section 13 and 15(d)

Employee Benefit Plan (Details)

v2.4.0.6
Employee Benefit Plan (Details) (USD $)
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Employee Benefit Plan [Abstract]      
Expenses related to employee benefits plan $ 71,000 $ 56,000 $ 37,000