Condensed Consolidated Statements of Equity (Parenthetical) (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Additional Paid-in Capital
Income tax on stock option exercise and other shares issued to employees and directors	$ 1,201	$ 678
Stock option exercises and other shares issued to employees and directors, shares	98	139
Retained Earnings
Dividends declared, per common share	$ 0.48	$ 0.45