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Rollforward of Financial Instruments Classified in Level Three of Valuation Hierarchy (Detail) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2016 | Mar. 31, 2015
Interest rate lock commitments |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Fair Value, Beginning Balance | $ 2,526 | $ 4,397
Total Realized/Unrealized Gains/(Losses) Recorded in (Loss) Income | 4,163 | 4,465
Total Realized/Unrealized Gains/(Losses) Recorded in Comprehensive (Loss) Income | 0 | 0
Settlements | 0 | 0
Transfers to/(from) level 3 | 0 | 0
Fair Value, Ending Balance | 6,689 | 8,862
Change in Unrealized Gains and (Losses) Related to Instruments Held | 6,586 | 8,807
Mortgage servicing rights |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Fair Value, Beginning Balance | 243,389 | 227,297
Total Realized/Unrealized Gains/(Losses) Recorded in (Loss) Income | (43,250) | (21,943)
Total Realized/Unrealized Gains/(Losses) Recorded in Comprehensive (Loss) Income | 0 | 0
Issuances | 7,948 | 15,017
Settlements | 0 | 0
Transfers to/(from) level 3 | 0 | 0
Fair Value, Ending Balance | 208,087 | 220,371
Change in Unrealized Gains and (Losses) Related to Instruments Held | $ (37,093) | $ (6,448)

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- Definition Amount of gain (loss) recognized in the income statement for financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
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- Definition Amount of purchases, (sales), issuances and (settlements) of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph c -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
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- Definition Amount of settlement of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
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