No definition available.

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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=96867065&loc=d3e5070-113901

+ Details

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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=96867065&loc=d3e5070-113901

+ Details

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- Definition

The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

+ 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 (a)(3)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

+ Details

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- Definition

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

+ Details

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- Definition

Number of performance targets defined under a share-based compensation award.

+ References

No definition available.

+ Details

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- Details

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- Details

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- Details

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- Details

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SHARE-BASED PAYMENT - Plan Information (Details)	3 Months Ended	12 Months Ended
SHARE-BASED PAYMENT - Plan Information (Details)	Mar. 31, 2017 shares	Dec. 31, 2017 item shares	Dec. 31, 2016 item shares	Dec. 31, 2015 shares
RSUs
Share-Based Payment
Granted (in shares)		335,991		0
Performance shares vested		579,589	0	0
2015 Equity Incentive Plan
Share-Based Payment
Number of shares of stock authorized for issuance		8,500,000
Number of shares remaining available for grant		2,100,000
PSPs \| RSUs \| Officers And Employees
Share-Based Payment
Granted (in shares)		300,000	500,000	0
2014 PSP \| RSUs
Share-Based Payment
Number of performance targets \| item			2
Performance shares vested	600,000
2016 PSP \| RSUs
Share-Based Payment
Number of performance targets \| item			3
2017 PSP \| RSUs
Share-Based Payment
Number of performance targets \| item		3