STOCK-BASED COMPENSATION (Additional Information) (Detail) (USD $) Share data in Thousands, unless otherwise specified	9 Months Ended
Sep. 30, 2012	Sep. 30, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Proceeds from stock options exercises	$ 696,000	$ 3,544,000
Requisite service periods of performance stock, restricted stock and contract stock awards, years	3 years
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options granted	254	34
Total unrecognized compensation costs	2,400,000
Weighted-average period for cost recognition, in years	2 years
Proceeds from stock options exercises	696,000	3,544,000
Restricted stock awards/stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options granted	240	274
Total unrecognized compensation costs	$ 12,600,000
Weighted-average period for cost recognition, in years	2 years
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options exercisable for directors, expiration period, in years	6 years
Stock options exercisable for employees, vesting period, in years	4 years
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options exercisable for employees, expiration period, in years	6 years
Stock options exercisable for directors, expiration period, in years	10 years

The cash inflow associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph i

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 14

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3255-108585

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 19

-Subparagraph a

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 18

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (j)

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

+ Details