Number of performance periods for which market-based restricted stock will be measured for vesting purposes

No definition available.

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- Definition

Performance-based restricted stock awards granted

+ References

No definition available.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Potential Performance Award Percentage

+ References

No definition available.

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- Definition

Unrecognized cost of unvested share-based compensation awards.

+ 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 (i)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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- Definition

Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, 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 (a)(1)
-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

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- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued 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

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.

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- Definition

Gross number of share options (or share units) granted during the period.

+ References

No definition available.

+ Details

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- Definition

Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

+ References

No definition available.

+ Details

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- Definition

Weighted average remaining contractual term of outstanding stock options, 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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SHARE-BASED COMPENSATION PLANS (Details Textual) $ / shares in Units, $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2017 USD ($) award $ / shares shares	Mar. 31, 2016 $ / shares shares	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding options, term	10 years
Performance-based restricted stock awards granted	79,000	45,000
Number of performance periods for which market-based restricted stock will be measured for vesting purposes \| award	3
Award vesting period	1 year
Compensation cost not yet recognized \| $	$ 34.7
Compensation cost not yet recognized, period for recognition	2 years 2 months 12 days
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options, grants in period (in shares)	462,000	513,000
Options, grants in period, weighted average exercise price (in dollars per share) \| $ / shares	$ 15.71	$ 12.53
Market Based Vested
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants in period (in shares)	45,000	34,000
Grants in period, weighted average grant date fair value (in dollars per share) \| $ / shares	$ 73.43	$ 54.10
Market Based Restricted Stock Rights, 2012 Grant \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Potential performance award percentage	150.00%		125.00%
Performance-Based Vested
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants in period (in shares)	142,000	58,000
Grants in period, weighted average grant date fair value (in dollars per share) \| $ / shares	$ 76.49	$ 55.32
ROC performance based restricted stock rights, 2013 Grant \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Potential performance award percentage	150.00%		125.00%
Time Vested
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants in period (in shares)	85,000	111,000
Grants in period, weighted average grant date fair value (in dollars per share) \| $ / shares	$ 76.57	$ 55.32
Time Vested Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	3 years