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Debt - Encore Senior Secured Notes (Detail) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2015 USD ($) agreement | Dec. 31, 2011 USD ($) | Dec. 31, 2014 USD ($)
Debt Instrument [Line Items] |  |  |
Senior Secured Notes, aggregate amount |  | $ 75,000,000.0 |
Senior secured notes | $ 28,750,000 |  | $ 43,750,000
Basis spread over the current Treasury Rate (percent) | 0.50% |  |
Number of debt agreements | agreement | 2 |  |
2011 Senior Secured Notes [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Senior Secured Notes, aggregate amount |  | $ 25,000,000 |
Debt instrument, interest rate |  | 7.375% |
Debt instrument maturity date |  | 2018 |
Senior Secured Notes, periodic principal repayment |  | $ 1,250,000 |
Senior secured notes | $ 11,300,000 |  |
2010 Senior Secured Notes [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Senior Secured Notes, aggregate amount |  | $ 50,000,000 |
Debt instrument, interest rate | 7.75% | 7.75% |
Debt instrument maturity date |  | 2017 |
Senior Secured Notes, periodic principal repayment |  | $ 2,500,000 |
Senior secured notes | $ 17,500,000 |  |

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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 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount of the required periodic payments applied to principal. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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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 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16(a)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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