Mortgage servicing rights.

No definition available.

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- Definition

Percentage of increase in discount rate of servicing rights.

+ References

No definition available.

+ Details

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- Definition

Primary servicing portfolio.

+ References

No definition available.

+ Details

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- Definition

Servicing asset at amortized value purchases from third parties.

+ References

No definition available.

+ Details

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- Definition

Special servicing portfolio.

+ References

No definition available.

+ Details

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- Definition

Fair value of an asset representing net future revenue from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 50
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=68078379&loc=d3e122625-111746

+ Details

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- Definition

The increase (decrease) in the fair value of servicing assets that are subsequently measured at fair value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 50
-Section 50
-Paragraph 3
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=68078379&loc=d3e122625-111746

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Mortgage Servicing Rights, Net - Additional Information (Detail) - USD ($) $ in Thousands		3 Months Ended	9 Months Ended		12 Months Ended
	Jul. 21, 2016	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Mortgage Servicing Rights [Line Items]
Primary servicing portfolio			$ 53,400,000		$ 50,600,000
Special servicing portfolio			$ 4,900,000		5,100,000
Discount Rate One [Member]
Mortgage Servicing Rights [Line Items]
Increase in discount rate			1.00%
Decrease in fair value of servicing rights			$ (11,500)		$ (9,900)
Discount Rate Two [Member]
Mortgage Servicing Rights [Line Items]
Increase in discount rate					2.00%
Decrease in fair value of servicing rights			(22,400)		$ (19,300)
Mortgage Servicing Rights [Member]
Mortgage Servicing Rights [Line Items]
Purchase of mortgage servicing rights from an unaffiliated third party	$ 3,800	$ 3,465		$ 3,465
Estimated fair value of MSRs			$ 403,500		$ 344,900