Condensed Consolidated Statements of Equity (Parenthetical) (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Treasury Shares
Purchase of treasury shares	0	76
Additional Paid-in Capital
Income tax on stock option exercise and other shares issued to employees and directors	678	1,199
Stock option exercises and other shares issued to employees and directors, shares	139	137
Retained Earnings
Dividends declared, per common share	0.45	0.33