Employee Benefit Plans (Shares Issued in Connection with Stock Compensation Awards) (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Compensation and Retirement Disclosure [Abstract]
New shares issued from available authorized shares	153,275	207,586	140,739
Issued from available treasury stock	1,179,551	15,600	29,824
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period	1,332,826	223,186	170,563
Proceeds from stock option exercises	$ 68,653	$ 10,516	$ 7,438
Intrinsic value of stock options exercised	20,506	1,538	1,475
Fair value of stock awards/units vested	$ 1,918	$ 1,649	$ 6,161