Business Segment Reporting - Schedule of Depreciation and Amortization by Segment (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting Information [Line Items]
Depreciation expense	$ 21,910us-gaap_Depreciation	$ 24,245us-gaap_Depreciation	$ 5,720us-gaap_Depreciation
Amortization of mortgage servicing rights	250,375	282,781	72,897
Amortization of debt discount	1,318	1,412	3,259
Amortization of debt issuance costs	5,139us-gaap_AmortizationOfFinancingCosts	4,395us-gaap_AmortizationOfFinancingCosts	3,718us-gaap_AmortizationOfFinancingCosts
Servicing [Member]
Segment Reporting Information [Line Items]
Depreciation expense	9,955	13,525	1,469
Amortization of mortgage servicing rights	249,471	282,526	72,897
Amortization of debt discount	1,318	1,412	3,259
Amortization of debt issuance costs	4,294	4,395	3,718
Lending [Member]
Segment Reporting Information [Line Items]
Depreciation expense	332	320	8
Amortization of mortgage servicing rights	705	255	0
Amortization of debt discount	0	0	0
Amortization of debt issuance costs	0	0	0
Corporate Items and Other [Member]
Segment Reporting Information [Line Items]
Depreciation expense	11,623	10,400	4,243
Amortization of mortgage servicing rights	199	0	0
Amortization of debt discount	0	0	0
Amortization of debt issuance costs	$ 845	$ 0	$ 0

Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

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Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 8

-Article 5

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Amount of noncash expense included in interest expense to issue debt and obtain financing associated with the related debt instruments. Alternate captions include noncash interest expense.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

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-Name Accounting Standards Codification

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The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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