Condensed Consolidated Balance Sheets (Parenthetical) (unaudited) (USD $)	Sep. 30, 2011	Dec. 31, 2010
Stockholder's Equity:
Preferred stock, par value (in dollars per share)	$ 25	$ 25
Preferred stock, shares authorized (in shares)	2,000,000	2,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.0667	$ 0.0667
Common stock shares authorized (in shares)	120,000,000	120,000,000
Common stock, shares issued (in shares)	28,969,931	28,752,325
Common stock shares outstanding (in shares)	28,969,931	28,752,325