Percentage points added to the reference rate to compute the variable rate on the debt instrument.

No definition available.

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- Definition

The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

+ References

No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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- Definition

Amount of the cost of borrowed funds accounted for as interest expense.

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- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of the fee for available but unused credit capacity under the credit facility.

+ References

+ Details

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Balance Type:	debit
Period Type:	duration

- Definition

Date the credit facility terminates, in CCYY-MM-DD format.

+ References

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Balance Type:	na
Period Type:	duration

- Definition

The effective interest rate at the end of the reporting period.

+ References

+ Details

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

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- Definition

Represents the stated variable base rate percentage floor when determining variable rate options under the terms of a debt agreement.

+ References

No definition available.

+ Details

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- Definition

The period of time for a line of credit extension option.

+ References

No definition available.

+ Details

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- Definition

Represents the advance under the credit facility as a percentage of loans made by the reporting entity.

+ References

No definition available.

+ Details

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- Definition

The number of extension options available on the facility.

+ References

No definition available.

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DEBT - Summary Information (Detail) $ in Thousands	12 Months Ended
DEBT - Summary Information (Detail) $ in Thousands	Dec. 31, 2016 USD ($) Option	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)
Debt
Outstanding Balance	$ 1,990,183	$ 2,649,470
Debt issuance costs	$ (1,928)	$ (2,541)
LIBOR
Debt
Reference rate for variable interest on the line of credit	30-day LIBOR	30-day LIBOR
Interest rate at end of period (as a percent)	0.77%	0.43%
Warehouse Facilities
Debt
Maximum Amount	$ 3,995,000	$ 4,135,000
Outstanding Balance	1,990,183	2,649,470
Interest expense	36,600	29,200	$ 18,200
Facility fees	$ 5,500	4,500	3,400
Agency Warehouse Facility #1
Debt
Advances made as a percentage of the loan balance	100.00%
Maturity date	Oct. 30, 2017
Agency Warehouse Facility #2
Debt
Advances made as a percentage of the loan balance	100.00%
Maturity date	Jun. 21, 2017
Agency Warehouse Facility #3
Debt
Advances made as a percentage of the loan balance	100.00%
Maturity date	Apr. 30, 2017
Agency Warehouse Facility #3, Base
Debt
Maximum Amount	$ 280,000
Agency Warehouse Facility #3, Temporary Increase
Debt
Maximum Amount	$ 400,000
Maturity date	Jan. 01, 2017
Agency Warehouse Facility #4
Debt
Maturity date	Oct. 27, 2017
Agency Warehouse Facility #4, Permanent Increase
Debt
Maximum Amount	$ 100,000
Agency Warehouse Facility #5
Debt
Maturity date	Jan. 01, 2018
Interim Warehouse Facility #1
Debt
Maturity date	Apr. 30, 2017
Term of debt	3 years
Interim Warehouse Facility #2
Debt
Maturity date	Dec. 13, 2017
Term of debt	3 years
Interim Warehouse Facility #3
Debt
Maturity date	May 19, 2017
Term of debt	3 years
Term of facility extension option	1 year
Number of extension options available \| Option	3
Loans Held for Sale
Debt
Interest expense	$ 31,278	23,134	13,272
Loans Held for Sale \| Agency Warehouse Facility
Debt
Maximum Amount	3,635,000	3,775,000
Outstanding Balance	1,848,994	2,478,984
Loans Held for Sale \| Agency Warehouse Facility #1 \| Agency Warehouse Facility
Debt
Maximum Amount	425,000	685,000
Outstanding Balance	$ 109,087	$ 418,891
Loans Held for Sale \| Agency Warehouse Facility #1 \| Agency Warehouse Facility \| LIBOR
Debt
Reference rate for variable interest on the line of credit	30-day LIBOR	30-day LIBOR
Basis points added to reference rate	1.40%
Loans Held for Sale \| Agency Warehouse Facility #1 \| Minimum \| Agency Warehouse Facility \| LIBOR
Debt
Basis points added to reference rate		1.40%
Loans Held for Sale \| Agency Warehouse Facility #1 \| Maximum \| Agency Warehouse Facility \| LIBOR
Debt
Basis points added to reference rate		1.75%
Loans Held for Sale \| Agency Warehouse Facility #2 \| Agency Warehouse Facility
Debt
Maximum Amount	$ 650,000	$ 1,900,000
Outstanding Balance	$ 274,181	$ 1,619,800
Loans Held for Sale \| Agency Warehouse Facility #2 \| Agency Warehouse Facility \| LIBOR
Debt
Reference rate for variable interest on the line of credit	30-day LIBOR	30-day LIBOR
Basis points added to reference rate	1.40%	1.40%
Loans Held for Sale \| Agency Warehouse Facility #3 \| Agency Warehouse Facility
Debt
Maximum Amount	$ 680,000	$ 490,000
Outstanding Balance	$ 320,801	$ 227,305
Loans Held for Sale \| Agency Warehouse Facility #3 \| Agency Warehouse Facility \| LIBOR
Debt
Reference rate for variable interest on the line of credit	30-day LIBOR	30-day LIBOR
Basis points added to reference rate	1.35%	1.40%
Loans Held for Sale \| Agency Warehouse Facility #4 \| Agency Warehouse Facility
Debt
Maximum Amount	$ 350,000	$ 250,000
Outstanding Balance	$ 186,869
Loans Held for Sale \| Agency Warehouse Facility #4 \| Agency Warehouse Facility \| LIBOR
Debt
Reference rate for variable interest on the line of credit	30-day LIBOR	30-day LIBOR
Basis points added to reference rate	1.40%	1.40%
Loans Held for Sale \| Agency Warehouse Facility #5 \| Agency Warehouse Facility
Debt
Maximum Amount	$ 30,000
Outstanding Balance	$ 14,551
Loans Held for Sale \| Agency Warehouse Facility #5 \| Agency Warehouse Facility \| LIBOR
Debt
Reference rate for variable interest on the line of credit	30-day LIBOR
Basis points added to reference rate	1.80%
Loans Held for Investment
Debt
Interest expense	$ 5,326	$ 6,037	$ 4,941
Loans Held for Investment \| Interim Warehouse Facility
Debt
Maximum Amount	360,000	360,000
Outstanding Balance	143,117	173,027
Loans Held for Investment \| Interim Warehouse Facility #1 \| Interim Warehouse Facility
Debt
Maximum Amount	85,000	85,000
Outstanding Balance	$ 36,916	$ 15,000
Loans Held for Investment \| Interim Warehouse Facility #1 \| Interim Warehouse Facility \| LIBOR
Debt
Reference rate for variable interest on the line of credit	30-day LIBOR	30-day LIBOR
Basis points added to reference rate	1.90%	1.90%
Loans Held for Investment \| Interim Warehouse Facility #2 \| Interim Warehouse Facility
Debt
Maximum Amount	$ 200,000	$ 200,000
Outstanding Balance	$ 70,196	$ 141,433
Loans Held for Investment \| Interim Warehouse Facility #2 \| Interim Warehouse Facility \| LIBOR
Debt
Reference rate for variable interest on the line of credit	30-day LIBOR	30-day LIBOR
Basis points added to reference rate	2.00%	2.00%
Loans Held for Investment \| Interim Warehouse Facility #3 \| Interim Warehouse Facility
Debt
Maximum Amount	$ 75,000	$ 75,000
Outstanding Balance	$ 36,005	$ 16,594
Loans Held for Investment \| Interim Warehouse Facility #3 \| Interim Warehouse Facility \| LIBOR
Debt
Reference rate for variable interest on the line of credit	30-day LIBOR	30-day LIBOR
Loans Held for Investment \| Interim Warehouse Facility #3 \| Minimum \| Interim Warehouse Facility \| LIBOR
Debt
Basis points added to reference rate	2.00%	2.00%
Loans Held for Investment \| Interim Warehouse Facility #3 \| Maximum \| Interim Warehouse Facility \| LIBOR
Debt
Basis points added to reference rate	2.50%	2.50%
National Banks \| Agency Warehouse Facility
Debt
Maximum Amount	$ 2,100,000
National Banks \| Interim Warehouse Facility
Debt
Maximum Amount	$ 400,000
Fannie Mae \| Uncommitted Agency Warehouse Facility
Debt
Advances made as a percentage of the loan balance	99.00%
Fannie Mae \| Uncommitted Agency Warehouse Facility \| Agency Warehouse Facility
Debt
Maximum Amount	$ 1,500,000
Fannie Mae \| Uncommitted Agency Warehouse Facility \| Minimum \| LIBOR
Debt
Minimum variable base rate percentage under terms of the debt agreement	0.35%
Fannie Mae \| Loans Held for Sale \| Uncommitted Agency Warehouse Facility \| Agency Warehouse Facility
Debt
Maximum Amount	$ 1,500,000	$ 450,000
Outstanding Balance	$ 943,505	$ 212,988
Fannie Mae \| Loans Held for Sale \| Uncommitted Agency Warehouse Facility \| Agency Warehouse Facility \| LIBOR
Debt
Reference rate for variable interest on the line of credit	30-day LIBOR	30-day LIBOR
Basis points added to reference rate	1.15%	1.15%