Capital Stock (Tables)

12 Months Ended

Dec. 31, 2011

Capital Stock Disclosure [Abstract]

Schedule Of Stock By Class [Table Text Block]

	Common Stock
	Class A	Class B
Outstanding at December 31, 2008	7,165	49,102
Shares issued as part of equity offering	-	2,990
Exercise of stock options/stock appreciation rights	-	194
Shares issued under director compensation arrangements	2	155
Restricted shares issued, net of forfeitures	-	87
Acquisition/surrender of shares	-	(35)
Outstanding at December 31, 2009	7,167	52,493
Exercise of stock options/stock appreciation rights	-	1,351
Restricted/performance shares issued, net of forfeitures	-	143
Acquisition/surrender of shares	-	(458)
Outstanding at December 31, 2010	7,167	53,529
Exercise of stock options/stock appreciation rights	-	637
Shares issued under director compensation arrangements	-	21
Restricted/performance shares issued, net of forfeitures	-	140
Acquisition/surrender of shares	-	(2,316)
Outstanding at December 31, 2011	7,167	52,011

Capital Stock Reserved Shares Table [Text Block]

	Common Stock
	Class A	Class B	Preferred Stock
Exercise of outstanding stock options	-	653	-
Future grant of stock-based compensation	-	2,643	-
Exercise of stock purchase rights	-	-	59
Shares reserved under other equity compensation plans	-	119	-
Total	-	3,415	59