12.5% Senior Secured Notes due 2017 - Additional Information (Details) - 12.5% Senior Secured Notes Due 2017 - USD ($)	9 Months Ended
Sep. 30, 2016	Feb. 07, 2012
Debt Instrument [Line Items]
Notes issued principal amount		$ 275,000,000
Interest rate on Senior secured notes due 2017	12.50%	12.50%
Issue price percentage of principal amount		97.00%
Senior secured notes, maturity date	Apr. 15, 2017
Frequency of interest payment	semi-annually
Date of first required payment	Apr. 15, 2012
Additional interest rate	2.00%
Aggregate principal amount of the notes	25.00%
Covenants, maximum unpaid principal payment	$ 15,000,000
Debt instrument payment period	60 days
Maximum
Debt Instrument [Line Items]
Secured leverage ratio	4.75%
Maximum \| Period One
Debt Instrument [Line Items]
Secured leverage ratio	4.75%
Maximum \| Period Two
Debt Instrument [Line Items]
Secured leverage ratio	4.75%
Maximum \| Period Three
Debt Instrument [Line Items]
Secured leverage ratio	4.75%
Maximum \| Period Four
Debt Instrument [Line Items]
Secured leverage ratio	4.75%
Maximum \| Period Five
Debt Instrument [Line Items]
Secured leverage ratio	4.75%
Maximum \| Period Six
Debt Instrument [Line Items]
Secured leverage ratio	4.75%
Maximum \| Period Seven
Debt Instrument [Line Items]
Secured leverage ratio	4.75%
Maximum \| Period Eight
Debt Instrument [Line Items]
Secured leverage ratio	4.75%

Aggregate principal amount of the notes.

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Financial covenants maximum unpaid principal amount.

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Issue price percentage of principal amount.

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Secured leverage ratio.

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- Definition

Date the debt agreement requires the first payment to be made, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823

Reference 2: 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

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- Definition

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

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400

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-Name Accounting Standards Codification
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-Section 45
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-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399

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Description of the frequency of periodic payments (monthly, quarterly, annual).

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- Definition

Incremental percentage increase (decrease) in the stated rate on a debt instrument.

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

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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.

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Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

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Description of the payment terms of the debt instrument (for example, whether periodic payments include principal and frequency of payments) and discussion about any contingencies associated with the payment.

+ 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)(3))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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-URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823

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