Fair Value - Changes in Level 3 Assets Measured at Fair Value on a Recurring Basis (Details) - Recurring Basis [Member] - Level 3 [Member] - USD ($) $ in Thousands		9 Months Ended
		Sep. 30, 2016	Sep. 30, 2015
MSR [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance		$ 74,007	$ 64,358
Total net (loss) gain included in Mortgage banking, net	[1]	(20,885)	(7,869)
Additions		12,392	13,320
Sales		0	0
Ending Balance		65,514	69,809
The amount of total gains (losses) for the period included in earnings that are attributable to the change in unrealized gains or losses still held, end of period		(13,519)	(433)
Other Assets - Derivatives [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance		1,113	1,299
Total net (loss) gain included in Mortgage banking, net	[1]	9,486	6,193
Additions		0	0
Sales		(7,852)	(4,786)
Ending Balance		2,747	2,706
The amount of total gains (losses) for the period included in earnings that are attributable to the change in unrealized gains or losses still held, end of period		$ 904	$ (169)

[1] Total net (loss) gain included in Mortgage banking, net relating to the MSR includes changes in fair value due to market changes and due to run-off.