XML 49 R6.htm IDEA: XBRL DOCUMENT v2.4.0.6
Consolidated Statement of Comprehensive Income (Parenthetical) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Consolidated Statement of Comprehensive Income [Abstract]    
Changes in fair value of hedge positions, tax $ 19 $ 0