XML 35 R25.htm IDEA: XBRL DOCUMENT
v3.10.0.1

STOCK AWARD PLANS (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Compensation Cost Breakdown in Statement of Earnings | The Company has share-based compensation plans which are described below. The compensation cost that has been charged against earnings for the Company’s stock award plans and the income tax benefit recognized in the statement of earnings for stock awards for the three months and nine months ended September 30, 2018 and 2017 were as follows (in thousands):
|  | Three months ended September 30, |  |  | Nine months ended September 30, |
|  | 2018 |  |  | 2017 |  |  | 2018 |  |  | 2017 |
Compensation cost |  | $ | 3,098 |  |  | $ | 3,067 |  |  | $ | 16,649 |  |  | $ | 8,991 |
Income tax benefit |  | $ | 709 |  |  | $ | 1,234 |  |  | $ | 4,747 |  |  | $ | 3,386 |
Stock Option Valuation Assumptions | The key input variables used in valuing the options during the nine months ended September 30, 2018 and 2017 were as follows:
|  | Nine months ended September 30, |
|  | 2018 |  |  | 2017 |
Dividend yield |  | None |  |  | None |
Average risk-free interest rate |  |  | 2.7 | % |  |  | 2.0 | %
Stock price volatility |  |  | 27 | % |  |  | 27 | %
Estimated option term |  | Six years |  |  | Six years |
Employee Plan [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Stock Option Activity | The following is a summary of the stock option activity under the employee plan described above for the nine months ended September 30, 2018:
|  | Outstanding Non- Qualified or Nonincentive Stock Awards |  |  | Weighted Average Exercise Price |
Outstanding at December 31, 2017 |  |  | 654,655 |  |  | $ | 66.45 |
Granted |  |  | 115,797 |  |  | $ | 75.50 |
Exercised |  |  | (283,886 | ) |  | $ | 67.71 |
Forfeited |  |  | (21,864 | ) |  | $ | 102.42 |
Outstanding at September 30, 2018 |  |  | 464,702 |  |  | $ | 69.85 |
Outstanding and Exercisable Stock Options | The following table summarizes information about the Company’s outstanding and exercisable stock options under the employee plan at September 30, 2018:
|  |  | Options Outstanding |  | Options Exercisable
Range of Exercise Prices |  |  | Number Outstanding |  |  | Weighted Average Remaining Contractual Life in Years |  |  | Weighted Average Exercise Price |  | Aggregate Intrinsic Value |  | Number Exercisable |  |  | Weighted Average Exercise Price |  | Aggregate Intrinsic Value
$51.23 |  |  |  | 90,975 |  |  |  | 4.3 |  |  | $ | 51.23 |  |  |  |  | 57,438 |  |  | $ | 51.23 |  |
$64.65 - $68.50 |  |  |  | 126,260 |  |  |  | 5.0 |  |  | $ | 67.23 |  |  |  |  | 41,116 |  |  | $ | 67.40 |  |
$70.65 - $75.50 |  |  |  | 207,156 |  |  |  | 4.7 |  |  | $ | 74.56 |  |  |  |  | 91,359 |  |  | $ | 73.36 |  |
$93.64 - $101.46 |  |  |  | 40,311 |  |  |  | 2.4 |  |  | $ | 95.90 |  |  |  |  | 40,311 |  |  | $ | 95.90 |  |
$51.23 - $101.46 |  |  |  | 464,702 |  |  |  | 4.5 |  |  | $ | 69.85 |  | $6,312,000 |  |  | 230,224 |  |  | $ | 70.72 |  | $3,204,000
Restricted Stock Award Activity | The following is a summary of the restricted stock award activity under the employee plan described above for the nine months ended September 30, 2018:
|  | Unvested Restricted Stock Award Shares |  |  | Weighted Average Grant Date Fair Value Per Share |
Nonvested balance at December 31, 2017 |  |  | 364,121 |  |  | $ | 65.84 |
Vested |  |  | (144,240 | ) |  | $ | 72.66 |
Forfeited |  |  | (3,949 | ) |  | $ | 64.68 |
Nonvested balance at September 30, 2018 |  |  | 215,932 |  |  | $ | 64.73 |
RSU Activity | The following is a summary of RSU activity under the employee plan described above for the nine months ended September 30, 2018:
|  | Unvested RSUs |  |  | Weighted Average Grant Date Fair Value Per Unit |
Nonvested balance at December 31, 2017 |  |  | — |  |  | $ | — |
Granted |  |  | 143,890 |  |  | $ | 75.59 |
Forfeited |  |  | (2,105 | ) |  | $ | 75.50 |
Nonvested balance at September 30, 2018 |  |  | 141,785 |  |  | $ | 75.59 |
Director Plan [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Stock Option Activity | The following is a summary of the stock option activity under the director plan described above for the nine months ended September 30, 2018:
|  | Outstanding Non-Qualified or Nonincentive Stock Options |  |  | Weighted Average Exercise Price |
Outstanding at December 31, 2017 |  |  | 157,617 |  |  | $ | 67.54 |
Granted |  |  | 2,640 |  |  | $ | 85.30 |
Exercised |  |  | (29,153 | ) |  | $ | 57.47 |
Outstanding at September 30, 2018 |  |  | 131,104 |  |  | $ | 70.14 |
Outstanding and Exercisable Stock Options | The following table summarizes information about the Company’s outstanding and exercisable stock options under the director plan at September 30, 2018:
|  |  | Options Outstanding |  | Options Exercisable
Range of Exercise Prices |  |  | Number Outstanding |  |  | Weighted Average Remaining Contractual Life in Years |  |  | Weighted Average Exercise Price |  | Aggregate Intrinsic Value |  | Number Exercisable |  |  | Weighted Average Exercise Price |  | Aggregate Intrinsic Value
$29.60 |  |  |  | 6,000 |  |  |  | 0.6 |  |  | $ | 29.60 |  |  |  |  | 6,000 |  |  | $ | 29.60 |  |
$41.24 – $56.45 |  |  |  | 31,276 |  |  |  | 2.2 |  |  | $ | 50.61 |  |  |  |  | 31,276 |  |  | $ | 50.61 |  |
$61.89 – $62.48 |  |  |  | 28,000 |  |  |  | 3.8 |  |  | $ | 62.27 |  |  |  |  | 28,000 |  |  | $ | 62.27 |  |
$70.65 – $99.52 |  |  |  | 65,828 |  |  |  | 5.4 |  |  | $ | 86.45 |  |  |  |  | 64,508 |  |  | $ | 86.48 |  |
$29.60 – $99.52 |  |  |  | 131,104 |  |  |  | 4.1 |  |  | $ | 70.14 |  | $2,114,000 |  |  | 129,784 |  |  | $ | 69.98 |  | $2,114,000
Restricted Stock Award Activity | The following is a summary of the restricted stock award activity under the director plan described above for the nine months ended September 30, 2018:
|  | Unvested Restricted Stock Award Shares |  |  | Weighted Average Grant Date Fair Value Per Share |
Nonvested balance at December 31, 2017 |  |  | 319 |  |  | $ | 70.65 |
Granted |  |  | 21,373 |  |  | $ | 85.70 |
Vested |  |  | (847 | ) |  | $ | 79.78 |
Nonvested balance at September 30, 2018 |  |  | 20,845 |  |  | $ | 85.71 |

X
- Definition Tabular disclosure of the costs related to the various types of retirement plans including defined benefit pension plan cost, defined contribution plan cost, other postretirement benefit plan cost, and net periodic benefit cost. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 + Details
Name: | us-gaap_ScheduleOfCostsOfRetirementPlansTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the changes in outstanding nonvested restricted stock units. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfNonvestedRestrictedStockUnitsActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfShareBasedCompensationRestrictedStockUnitsAwardActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeTextBlock
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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=109197908&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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- 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
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_PlanNameAxis=kex_EmployeePlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PlanNameAxis=kex_DirectorPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |