Mortgage Banking (Tables)

12 Months Ended

Dec. 31, 2016

Mortgage Banking [Abstract]

Schedule of Activity in the Mortgage Servicing Rights

The activity in the MSR is detailed in the table below for the periods presented ($ in thousands):

	Years Ended December 31,
	2016			2015
Balance at beginning of period	$	74,007		$	64,358
Origination of servicing assets		16,745			17,598
Change in fair value:
Due to market changes		(407	)		1,578
Due to runoff		(10,106	)		(9,527	)
Balance at end of period	$	80,239		$	74,007

Schedule of Mortgage Loans Sold and Serviced for Others

The table below details the mortgage loans sold and serviced for others at December 31, 2016 and 2015 ($ in thousands):

	December 31,
	2016		2015
Federal National Mortgage Association	$	3,992,349	$	3,750,685
Government National Mortgage Association		2,291,398		2,111,797
Federal Home Loan Mortgage Corporation		55,006		67,817
Other		32,589		41,013
Total mortgage loans sold and serviced for others	$	6,371,342	$	5,971,312

Changes in the Reserve for Mortgage Loan Servicing Putback Expense

Changes in the reserve for mortgage loan servicing putback expense for mortgage loans were as follows for the periods presented ($ in thousands):

	Years Ended December 31,
	2016			2015		2014
Balance at beginning of period	$	1,685		$	1,170	$	1,050
Provision for putback expenses		420			315		600
(Losses) Gains		(975	)		200		(480	)
Balance at end of period	$	1,130		$	1,685	$	1,170