Consolidated Statement of Shareholders' Equity (Paranthetical) - shares	Total	Common Stock [Member]
Common Stock, Shares, Outstanding		48,061,921
Stock issued under employee incentive plans (shares)		14,722
Common Stock, Shares, Outstanding		48,076,643
Stock Issued During Period, Shares, New Issues	1,018,503
Stock issued under employee incentive plans (shares)		29,655
Common Stock, Shares, Outstanding	49,124,801
Stock Issued During Period, Shares, New Issues	378,736
Stock issued under employee incentive plans (shares)		23,571
Common Stock, Shares, Outstanding	49,527,108
Common Stock, Shares, Outstanding	49,580,389
Stock Issued During Period, Shares, New Issues		84,547
Stock issued under employee incentive plans (shares)		10,832
Common Stock, Shares, Outstanding		49,675,768
Stock Issued During Period, Shares, New Issues		62,576
Common Stock, Shares, Outstanding		49,738,344
Stock Issued During Period, Shares, New Issues		21,136
Common Stock, Shares, Outstanding		49,759,480