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		3 Months Ended
		Mar. 31, 2016	Mar. 31, 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]	(8,871)	(4,581)
Additions		3,072	3,126
Sales		0	0
Ending Balance		68,208	62,903
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		(6,866)	(2,368)
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]	3,097	2,410
Additions		0	0
Sales		(926)	(1,121)
Ending Balance		3,284	2,588
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		$ 398	$ (34)

[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.