Consolidated Balance Sheet - Unaudited (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Loans held for sale at fair value	$ 502,854	$ 1,507
Preferred stock, par value (usd per share)	$ 1.00	$ 1.00
Preferred stock, liquidation preference (usd per share)	$ 25.00	$ 25.00
Preferred stock, shares authorized (shares)	100,000,000	100,000,000
Preferred stock, shares issued (shares)	9,000,000	9,000,000
Preferred stock, shares outstanding (shares)	9,000,000	9,000,000
Common stock, par value (usd per share)	$ 1.00	$ 1.00
Common stock, shares authorized (shares)	200,000,000	200,000,000
Common stock, shares issued (shares)	32,526,395	32,252,488
Common stock, shares outstanding (shares)	31,245,776	31,003,028
Treasury stock, shares (shares)	1,280,619	1,249,460
Significant Other Observable Inputs (Level 2)
Loans held for sale at fair value	$ 1,755	$ 1,507