Debt - Encore Senior Secured Notes (Detail)	9 Months Ended
Sep. 30, 2015 USD ($) agreement	Dec. 31, 2014 USD ($)
Debt Instrument [Line Items]
Securitized notes	$ 32,500,000	$ 43,750,000
Basis spread over the current Treasury Rate (percent)	0.50%
Number of agreements \| agreement	2
Senior Secured Notes [Member]
Debt Instrument [Line Items]
Senior secured notes, aggregate amount	$ 75,000,000
2011 Senior Secured Notes [Member]
Debt Instrument [Line Items]
Senior secured notes, aggregate amount	$ 25,000,000
Debt instrument, stated interest rate	7.375%
Senior secured notes, periodic principal repayment	$ 1,250,000.00
Securitized notes	12,500,000
2010 Senior Secured Notes [Member]
Debt Instrument [Line Items]
Senior secured notes, aggregate amount	$ 50,000,000
Debt instrument, stated interest rate	7.75%
Senior secured notes, periodic principal repayment	$ 2,500,000.0
Securitized notes	$ 20,000,000

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- Definition

Senior secured notes present value inputs discount rate spread.

+ References

No definition available.

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- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 55

-Paragraph 8

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

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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

Amount of the required periodic payments applied to principal.

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- Definition

Including the current and noncurrent portions, carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer). Senior note holders are paid off in full before any payments are made to junior note holders.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

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-Subparagraph (SX 210.7-03.16(a))

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-Name Accounting Standards Codification

-Topic 942

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-Subparagraph (SX 210.9-03.16)

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