Annual report pursuant to Section 13 and 15(d)

Retirement Plan (Details)

v2.4.0.6
Retirement Plan (Details) (USD $)
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Retirement Plan [Abstract]      
Employer contribution, percentage 10.00%    
Percentage of employee wage contributions matched 10% by the employer 4.00%    
Retirement Plan, Total expense $ 72,000 $ 70,000 $ 114,000