Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Jun. 30, 2013	Mar. 31, 2013
Consolidated Balance Sheets [Abstract]
Loans held for sale	$ 105,643
Common stock, par value (in dollars per share)		$ 2.50	$ 2.50		$ 2.50
Common stock, shares authorized (in shares)		500,000,000	500,000,000		500,000,000
Common stock, shares issued (in shares)	96,046,057		95,231,691	95,190,797