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EMPLOYEE STOCK COMPENSATION - Unrecognized Share Based Compensation Expense (Detail) $ in Thousands	6 Months Ended
	Jun. 30, 2016 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized Expense	$ 18,200
Average Expected Recognition Period	2 years 8 months 1 day
Stock option awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized Expense	$ 1,832
Average Expected Recognition Period	3 years 10 months 16 days
Restricted stock awards and restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized Expense	$ 16,362
Average Expected Recognition Period	2 years 6 months 13 days
Stock appreciation rights
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized Expense	$ 6
Average Expected Recognition Period	10 months 20 days

X

- 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

+ Details

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X

- 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

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

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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- Details

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- Details

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X

- Details

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