Debt - Senior Notes 6% (Details) - USD ($)	1 Months Ended	3 Months Ended
Jun. 30, 2015	Jun. 30, 2016
Debt Instrument [Line Items]
Debt issuance costs	$ 1,900,000
Senior Notes [Member]
Debt Instrument [Line Items]
Senior secured notes, aggregate principal amount issued	210,000,000
Six Percent Senior Secured Notes [Member]
Debt Instrument [Line Items]
Debt issuance costs	$ 6,794,000
Percentage of principal amount, redemption price		106.00%
Repurchase of senior secured notes purchase price percentage		101.00%
Six Percent Senior Secured Notes [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Percentage of aggregate principal amount, maximum redeemable (up to)		40.00%
Percentage of principal amount redeemed at redemption date	104.50%
Six Percent Senior Secured Notes [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Minimum percentage of aggregate principal amount outstanding, excluding the redemption date (at least)		60.00%
Percentage of principal amount redeemed at redemption date	100.00%
Six Percent Senior Secured Notes [Member] \| Senior Notes [Member]
Debt Instrument [Line Items]
Senior secured note interest rate	6.00%
Senior secured notes, aggregate principal amount issued	$ 230,000,000

Percentage of aggregate principal amount outstanding excluding redemption date.

No definition available.

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- Definition

Percentage of aggregate principal amount, redeemable.

+ References

No definition available.

+ Details

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- Definition

Percentage of principal amount redeemed at redemption date.

+ References

No definition available.

+ Details

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- Definition

Percentage of principal amount redemption price.

+ References

No definition available.

+ Details

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- Definition

Repurchase of senior secured notes purchase price percentage.

+ References

No definition available.

+ Details

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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
-URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399

+ Details

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Period Type:	instant

- 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

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.

+ Details

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- Definition

Amount, before 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
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28555-108399

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- Details

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