Performance Awards - Summary of Grant Activity (Details) $ in Thousands	12 Months Ended
Dec. 31, 2015 USD ($) shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized Compensation \| $	$ 4,200
Performance Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grant Amount	6,790,000
Forfeitures/Adjustments	(3,360,000)
Payments	(282,000)
Outstanding awards	3,148,000
Unrecognized Compensation \| $	$ 2,120
November 2012 \| Performance Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grant Amount	1,865,000
Forfeitures/Adjustments	(1,583,000)
Payments	(282,000)
Outstanding awards	0
Unrecognized Compensation \| $	$ 0
Remaining Periods (in Months) to Vesting	0 months
November 2013 \| Performance Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grant Amount	1,351,000
Forfeitures/Adjustments	(715,000)
Payments	0
Outstanding awards	636,000
Unrecognized Compensation \| $	$ 159
Remaining Periods (in Months) to Vesting	9 months
November 2014 \| Performance Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grant Amount	2,087,000
Forfeitures/Adjustments	(1,062,000)
Payments	0
Outstanding awards	1,025,000
Unrecognized Compensation \| $	$ 598
Remaining Periods (in Months) to Vesting	21 months
November 2015 \| Performance Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grant Amount	1,487,000
Forfeitures/Adjustments	0
Payments	0
Outstanding awards	1,487,000
Unrecognized Compensation \| $	$ 1,363
Remaining Periods (in Months) to Vesting	33 months

Unrecognized cost of unvested share-based awards, other than options, awarded to employees as compensation.

No definition available.

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(3)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

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- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(i)-(ii)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(2)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ 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

Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (e)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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