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Share-Based Compensation: | 6 Months Ended
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Jun. 30, 2013
Share-Based Compensation: |
Share-Based Compensation: | (6) Share-Based Compensation: During the six months ended June 30, 2013, the Company granted no non-qualified stock options to purchase shares of the Company’s common stock. Activity in the Company’s stock option plans for the six months ended June 30, 2013, was as follows (in thousands, except weighted average exercise price and weighted average contractual life):
|  |  |  |  |  |  |  |  |  | Weighted |  | Weighted |  |  |
|  |  |  |  |  | 1998 |  |  |  | Average |  | Average |  | Aggregate |
|  | 2007 |  | 1998 |  | Director |  | Total |  | Exercise |  | Contractual |  | Intrinsic |
|  | Plan |  | Plan |  | Plan |  | Shares |  | Price |  | Life |  | Value |
Outstanding, January 1, 2013 |  | 954 |  | 253 |  | 146 |  | 1,353 |  | $ | 21.15 |  |  |  |  |
Granted |  | — |  | — |  | — |  | — |  | $ | — |  |  |  |  |
Exercised |  | (42 | ) | — |  | (6 | ) | (48 | ) | $ | 17.41 |  |  |  |  |
Forfeited and expired |  | (6 | ) | (2 | ) | — |  | (8 | ) | $ | 21.74 |  |  |  |  |
Outstanding, June 30, 2013 |  | 906 |  | 251 |  | 140 |  | 1,297 |  | $ | 21.28 |  | 5.1 |  | $ | 4,897 |
Exercisable, June 30, 2013 |  | 704 |  | 251 |  | 140 |  | 1,095 |  | $ | 21.14 |  | 4.6 |  | $ | 4,307 |
The following table summarizes non-vested restricted stock unit activity through June 30, 2013, (in thousands, except weighted average grant-date fair value amounts):
|  | 2007 |  |  |
|  | Plan |  | Weighted |
|  | Restricted |  | Average |
|  | Stock |  | Grant-Date |
|  | Units |  | Fair Value |
Outstanding, January 1, 2013 |  | 356 |  | $ | 17.97 |
Granted |  | 367 |  | $ | 26.64 |
Vested |  | (152 | ) | $ | 17.20 |
Canceled |  | — |  | $ | 0.00 |
Outstanding, June 30, 2013 |  | 571 |  | $ | 23.76 |
Restricted stock unit awards vest over three years. A portion of the awards vest based on a service period, and are expensed over the three-year vesting period. Prior to 2013, the Company also granted performance-based awards that vest over a three-year period, provided that the Company met certain performance targets in the first year of the grant. During the first quarter of 2013 the Company granted new performance-based awards tied to the Company’s average annual return on invested capital (which the Company refers to as “average ROIC”), as measured over the three-year period beginning January 1, 2013 and ending December 31, 2015. Performance Share awards for the senior leadership team will also be modified based on total shareholder return performance (which the Company refers to as the “TSR modifier”) measured over the same three-year period. The relative TSR is based on the Company’s total shareholder return over the three-year measurement period relative to the shareholder return over the same period for the companies comprising the S&P Transportation Select Industry Index and S&P MidCap 400 Index (with each index weighted 50%). The service-vesting provisions of each performance based award require the award recipient to remain in continuous service with the Company until the end of the three-year measurement period, subject to certain exceptions due to retirement, disability, or death, in order to vest in any shares that become issuable on the basis of the performance-vesting criteria. A summary of compensation cost related to share-based payments for the three and six months ended June 30, 2013 and 2012, exclusive of A&B related compensation prior to the Separation, is as follows (in millions):
|  | Three Months Ended |  | Six Months Ended |
|  | June 30, |  | June 30, |
|  | 2013 |  | 2012 |  | 2013 |  | 2012 |
Share-based expense (net of estimated forfeitures): |  |  |  |  |  |  |  |  |
Stock options |  | $ | 0.1 |  | $ | 0.2 |  | $ | 0.2 |  | $ | 0.4 |
Non-vested stock/Restricted stock units |  | 1.4 |  | 0.6 |  | 2.6 |  | 1.4 |
Total share-based expense |  | 1.5 |  | 0.8 |  | 2.8 |  | 1.8 |
Total recognized tax benefit |  | (0.6 | ) | (0.3 | ) | (1.1 | ) | (0.7 | )
Share-based expense (net of tax) |  | $ | 0.9 |  | $ | 0.5 |  | $ | 1.7 |  | $ | 1.1 |

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- Definition The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 50 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6406099&loc=d3e25284-112666 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph 64, 65, A240 -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 Accounting Standards Codification -Topic 718 -SubTopic 40 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6418621&loc=d3e17540-113929 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5444-113901 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 93-6 -Paragraph 53 -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. + Details
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