Fair Value Measurement - Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2017	Mar. 31, 2016
Interest Rate Lock and Purchase Loan Commitments [Member]
Fair Value Changes and Activity for Level 3 [Roll Forward]
Beginning balance	$ 19,219	$ 17,711
Settlements	(27,542)	(33,757)
Realized/unrealized gains (losses)	35,459	44,528
Ending balance	27,136	28,482
Loans Held for Sale [Member]
Fair Value Changes and Activity for Level 3 [Roll Forward]
Beginning balance	41,810	49,322
Additions	2,799	483
Transfers	(690)	0
Settlements	(3,226)	(4,829)
Realized/unrealized gains (losses)	(363)	582
Ending balance	40,330	45,558
Loans Held for Investment [Member]
Fair Value Changes and Activity for Level 3 [Roll Forward]
Beginning balance	17,988	21,544
Additions	0	0
Transfers	1,206	0
Settlements	0	(3,080)
Realized/unrealized gains (losses)	(152)	(137)
Ending balance	$ 19,042	$ 18,327

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.

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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

+ Details

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- Definition

Amount of purchases 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.

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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.

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- Definition

Amount of transfer of financial instrument classified as an asset into (out of) level 3 of the fair value hierarchy.

+ References

No definition available.

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- Definition

Fair value of financial instrument classified as derivative asset (liability) after deduction of derivative liability (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 (a)
-URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19279-110258

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