XML 19 R78.htm IDEA: XBRL DOCUMENT v2.4.0.6
Employee Benefit Plan (Details Textual) (USD $)
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Employee Benefit Plan (Textual) [Abstract]      
Company contribution percentage 100.00%    
Participant's contribution percentage 5.00%    
Additional profit-sharing contribution $ 0 $ 0 $ 0
Aggregate contributions $ 598,000 $ 542,000 $ 624,000