Fair Value Measurements Notional Amount of Financial Instruments (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Notional Disclosures [Abstract]
Best efforts contracts and related committed IRLCs	$ 3,456	$ 2,494
Uncommitted IRLCs	62,151	49,710
FMBSs related to uncommitted IRLCs	63,000	48,000
Best efforts contracts and related mortgage loans held for sale	24,934	63,386
FMBSs related to mortgage loans held for sale	38,000	20,000
Mortgage loans held for sale covered by FMBSs	$ 38,180	$ 19,884