XML 38 R27.htm IDEA: XBRL DOCUMENT
v3.8.0.1

SHARE-BASED AWARDS AND OPTIONS (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Schedule of compensation cost for share-based payment arrangements, allocation of share-based compensation costs by plan | The following table summarizes share-based compensation expense and the related income tax benefit recognized for our share-based awards and stock options:
| Three Months Ended |  | Nine Months Ended
| September 30, 2017 |  | September 30, 2016 |  | September 30, 2017 |  | September 30, 2016
| (in thousands)
Share-based compensation expense | $ | 9,617 |  |  | $ | 8,688 |  |  | $ | 30,771 |  |  | $ | 26,060 |
Income tax benefit | $ | 3,523 |  |  | $ | 2,968 |  |  | $ | 10,788 |  |  | $ | 8,679 |
Schedule of changes in non-vested restricted stock awards activity | The following table summarizes the changes in unvested share-based awards for the nine months ended September 30, 2017:
| Shares |  | Weighted-Average Grant-Date Fair Value
| (in thousands) |  |
Unvested at December 31, 2016 | 1,263 |  |  |  | $49.55 |
Granted | 611 |  |  | 71.77 |
Vested | (685 | ) |  | 40.35 |
Forfeited | (71 | ) |  | 60.36 |
Unvested at September 30, 2017 | 1,118 |  |  |  | $66.74 |
Schedule of share-based compensation, stock options, activity | The following summarizes changes in stock option activity for the nine months ended September 30, 2017:
| Options |  | Weighted-Average Exercise Price |  | Weighted-Average Remaining Contractual Term |  | Aggregate Intrinsic Value
| (in thousands) |  |  |  | (years) |  | (in millions)
Outstanding at December 31, 2016 | 759 |  |  | $37.51 |  | 6.0 |  | $24.5
Granted | 124 |  |  | 79.45 |  |  |  |
Exercised | (156 | ) |  | 23.56 |  |  |  |
Outstanding at September 30, 2017 | 727 |  |  | $47.67 |  | 6.6 |  | $34.4
Options vested and exercisable at September 30, 2017 | 505 |  |  | $36.49 |  | 5.6 |  | $29.6
Schedule of share-based payment award, stock options, valuation assumptions | Fair value was estimated on the date of grant using the Black-Scholes valuation model with the following weighted-average assumptions:
| Nine Months Ended
| September 30, 2017
Risk-free interest rate | 1.99%
Expected volatility | 30%
Dividend yield | 0.06%
Expected term (years) | 5

X
- References No definition available. + Details
Name: | us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the amount of total share-based compensation cost, including the amounts attributable to each share-based compensation plan and any related tax benefits. + 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 (h)(1) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfCompensationCostForShareBasedPaymentArrangementsAllocationOfShareBasedCompensationCostsByPlanTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the changes in outstanding nonvested shares. + 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) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfNonvestedShareActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + 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 (d) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + 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 (f)(2) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration