Condensed Consolidated Statements of Equity (Parenthetical) (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Additional Paid-in Capital
Income tax on stock option exercise and other shares issued to employees and directors	$ 1,530	$ 1,052
Stock option exercises and other shares issued to employees and directors, shares	214	118
Retained Earnings
Dividends declared, per common share	$ 0.11	$ 0.1066666667