Balance Sheet Parenthetical In Thousands	Sep. 30, 2011	Dec. 31, 2010
Shareholders' equity:
Common stock; authorized	225,000	225,000
Common stock; issued	73,081	71,996
Common stock; outstanding	73,081	71,996
Preferred stock; authorized	50,000	50,000
Preferred stock; issued	0	0
Preferred stock; outstanding	0	0