Mortgage Servicing Rights - Summary of Projections of Amortization Expense for Mortgage Servicing Rights (Detail) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2015	Dec. 31, 2014
Transfers and Servicing [Abstract]
Year ended December 31, 2014	$ 4,010	$ 3,798
2016	3,406
2017	2,813
2018	2,323
2019	1,918
2020	1,584
Thereafter	7,583
Total	$ 19,627

Estimated Amortization Of Mortgage Servicing Rights Year Five

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Estimated Amortization Of Mortgage Servicing Rights Year Five Thereafter

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Estimated amortization of mortgage servicing rights year four.

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- Definition

Estimated Amortization Of Mortgage Servicing Rights Year One

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Estimated amortization of mortgage servicing rights year three.

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Estimated amortization of mortgage servicing rights year two.

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The periodic amortization (in proportion to and over the period of estimated net servicing income or loss) of capitalized servicing rights, which contractually entitle the servicer to receive fees and ancillary revenues for performing billing, collection, disbursement and recordkeeping services in connection with a mortgage portfolio. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 50
-Section 50
-Paragraph 4
-Subparagraph (a)(4)
-URI http://asc.fasb.org/extlink&oid=56950315&loc=d3e122739-111746

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585

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Amount of amortization of contract to service financial assets under which the benefits of servicing are expected to more than adequately compensate the servicer.

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