XML 73 R64.htm IDEA: XBRL DOCUMENT v2.4.0.6
Employee Benefit Plans (Details) (USD $)
 12 Months Ended
Dec. 31, 2012
Pension Plan
Dec. 31, 2011
Pension Plan
Dec. 31, 2009
Pension Plan
Dec. 31, 2012
401 (k) Plan
item
Dec. 31, 2011
401 (k) Plan
Dec. 31, 2010
401 (k) Plan
Employee benefit plans            
Contribution made by the entity under the pension plan $ 100,000 $ 100,000 $ 200,000      
Matching contribution by employer as a percentage of the employee's deferral       100.00%    
Matching contribution by employer as a percentage of U.S. employee's qualifying compensation       6.00%    
Statutorily prescribed annual limit of contributions made by an employee before attaining specified age       17,000    
Statutorily prescribed annual limit of contributions made by an employee after attaining specified age       22,500    
Specified age limit of employees for calculation of statutorily prescribed annual limit of contribution       50    
Contribution made by the entity under the 401(k) Plan       $ 100,000 $ 100,000 $ 100,000