MORTGAGE SERVICING RIGHTS (Tables)

3 Months Ended

Mar. 31, 2016

MORTGAGE SERVICING RIGHTS [Abstract]

Data and Assumptions Used in Fair Value Calculation

	March 31,		December 31,
	2016	2015	2015
	(Dollars in thousands)
Unpaid principal balance	$6,096,220	$5,705,638	$6,011,236
Weighted-average prepayment speed (CPR)	12.5	12.4	10.3
Discount rate (annual percentage)	9.8	9.8	9.8
Weighted-average coupon interest rate (percentage)	4.0	4.1	4.0
Weighted-average remaining maturity (months)	320.0	315.0	319.0
Weighted-average servicing fee (basis points)	26.6	26.5	26.6

Activity in Class of Mortgage Servicing Assets

	2016	2015
	(In thousands)
Fair value as of January 1	$        57,268	$         51,296
Additions:
Origination of servicing assets	2,612	2,499
Changes in fair value:
Due to payoffs/paydowns	(1,380)	(1,564)
Due to change in valuation inputs or assumptions
used in the valuation model	(7,954)	(3,039)
Other changes in fair value	(2)	(2)
Fair value as of March 31	$        50,544	$         49,190