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STOCK-BASED COMPENSATION PLANS - Stock Options Outstanding (Detail) | 12 Months Ended
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Dec. 31, 2017 $ / shares shares
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items] |
Number of options outstanding (in shares) | shares | 983,512
Weighted average exercise price of options outstanding (in dollars per share) | $ / shares | $ 40.62
Number of options currently exercisable (in shares) | shares | 802,609
Weighted average exercise price of options currently exercisable (in dollars per share) | $ / shares | $ 32.52
Under $15.00 |
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items] |
Number of options outstanding (in shares) | shares | 180,000
Weighted average exercise price of options outstanding (in dollars per share) | $ / shares | $ 14.50
Weighted average remaining contractual life (in years) | 1 year 1 month
Number of options currently exercisable (in shares) | shares | 180,000
Weighted average exercise price of options currently exercisable (in dollars per share) | $ / shares | $ 14.50
15.00 - 23.00 |
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items] |
Number of options outstanding (in shares) | shares | 193,701
Weighted average exercise price of options outstanding (in dollars per share) | $ / shares | $ 18.77
Weighted average remaining contractual life (in years) | 1 year 3 months
Number of options currently exercisable (in shares) | shares | 193,701
Weighted average exercise price of options currently exercisable (in dollars per share) | $ / shares | $ 18.77
23.00 - 30.00 |
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items] |
Number of options outstanding (in shares) | shares | 136,924
Weighted average exercise price of options outstanding (in dollars per share) | $ / shares | $ 28.75
Weighted average remaining contractual life (in years) | 2 years 9 months
Number of options currently exercisable (in shares) | shares | 136,924
Weighted average exercise price of options currently exercisable (in dollars per share) | $ / shares | $ 28.75
30.00 - 38.00 |
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items] |
Number of options outstanding (in shares) | shares | 94,496
Weighted average exercise price of options outstanding (in dollars per share) | $ / shares | $ 35.24
Weighted average remaining contractual life (in years) | 4 years 1 month
Number of options currently exercisable (in shares) | shares | 94,496
Weighted average exercise price of options currently exercisable (in dollars per share) | $ / shares | $ 35.24
Over 38.00 |
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items] |
Number of options outstanding (in shares) | shares | 378,391
Weighted average exercise price of options outstanding (in dollars per share) | $ / shares | $ 69.86
Weighted average remaining contractual life (in years) | 7 years
Number of options currently exercisable (in shares) | shares | 197,488
Weighted average exercise price of options currently exercisable (in dollars per share) | $ / shares | $ 63.72

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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 The number of shares reserved for issuance pertaining to the outstanding exercisable stock options as of the balance sheet date in the customized range of exercise prices for which the market and performance vesting condition has been satisfied. + 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)(iii) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices. + 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)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition Weighted average exercise price as of the balance sheet date for those equity-based payment arrangements exercisable and outstanding. + 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)(iii) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition The weighted average price as of the balance sheet date at which grantees could acquire the underlying shares with respect to all outstanding stock options which are in the customized range of exercise prices. + 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)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + 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=96867065&loc=d3e5070-113901 + Details
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