XML 53 R36.htm IDEA: XBRL DOCUMENT v2.3.0.15
Shareholders' Equity (Employee Stock Purchase Plan And 401(k) Plan) (Details) (USD $)
In Thousands, except Share data
3 Months Ended9 Months Ended
Sep. 30, 2011
Sep. 30, 2010
Sep. 30, 2011
Sep. 30, 2010
Disclosure Equity Components [Line Items]    
Common stock issued to profit sharing retirement plans, contribution  $ 1,718$ 489
Employee Stock Purchase Plan [Member]
    
Disclosure Equity Components [Line Items]    
Common stock issued under employee stock purchase plan, shares2,7393,19210,13111,310
Common stock issued under employee stock purchase plan, net proceeds168175641591
401(k) Plan [Member]
    
Disclosure Equity Components [Line Items]    
Common stock issued to profit sharing retirement plans, shares  27,2409,975
Common stock issued to profit sharing retirement plans, contribution  $ 1,718$ 489