XML 14 R4.htm IDEA: XBRL DOCUMENT v2.3.0.15
Condensed Statements of Earnings (Unaudited) (USD $)
In Thousands
3 Months Ended9 Months Ended
Sep. 30, 2011
Sep. 30, 2010
Sep. 30, 2011
Sep. 30, 2010
EARNINGS    
Earnings$ 13,531$ 13,531$ 40,593$ 40,593