Mortgage Servicing Rights (Tables)

12 Months Ended

Dec. 31, 2018

Disclosures Pertaining to Servicing Assets and Servicing Liabilities [Abstract]

Schedule of Servicing Assets at Fair Value

Following is a summary of the changes in the carrying value of MSRs, accounted for at fair value, for the years ended December 31, 2018, 2017 and 2016:

	December 31,			December 31,			December 31,
(Dollars in thousands)	2018			2017			2016
Balance at beginning of year	$	33,676		$	19,103		$	9,092
Additions from loans sold with servicing retained	33,071			18,341			13,091
Additions from acquisitions	13,806			—			—
Estimate of changes in fair value due to:
Payoffs and paydowns	(5,039		)	(2,595		)	(2,325		)
Changes in valuation inputs or assumptions	(331		)	(1,173		)	(755		)
Fair value at end of year	$	75,183		$	33,676		$	19,103
Unpaid principal balance of mortgage loans serviced for others	$	6,545,870		$	2,929,133		$	1,784,760