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Stock-Based Compensation | 6 Months Ended
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Jun. 30, 2013
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] |
Stock-Based Compensation | Note 11 - Stock-Based Compensation A combined summary of activity in the Corporation’s active stock plans is presented in the following table.
|  |  |  |  |  |  |  | Non-Vested Stock Awards/Stock Units Outstanding |  |  | Stock Options Outstanding |
|  | Shares Available for Grant |  |  | Director Deferred Stock Units Outstanding |  |  | Number of Shares |  |  | Weighted- Average Grant-Date Fair Value |  |  | Number of Shares |  |  | Weighted- Average Exercise Price |
Balance, January 1, 2013 |  |  | 1,157,413 |  |  |  | 27,724 |  |  |  | 188,560 |  |  | $ | 51.67 |  |  |  | 5,513,516 |  |  | $ | 51.94 |
Authorized |  |  | 2,293,660 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Granted |  |  | (5,500 | ) |  |  | 5,500 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Stock options exercised |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (662,224 | ) |  |  | 51.63 |
Stock awards vested |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Forfeited |  |  | 30,375 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (30,375 | ) |  |  | 51.32 |
Cancelled/expired |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Balance, June 30, 2013 |  |  | 3,475,948 |  |  |  | 33,224 |  |  |  | 188,560 |  |  | $ | 51.67 |  |  |  | 4,820,917 |  |  | $ | 51.99 |
Shares issued in connection with stock compensation awards are issued from available treasury shares. If no treasury shares are available, new shares are issued from available authorized shares. Shares issued in connection with stock compensation awards along with other related information were as follows:
|  | Three Months Ended June 30, |  |  | Six Months Ended June 30, |
|  | 2013 |  |  | 2012 |  |  | 2013 |  |  | 2012 |
New shares issued from available authorized shares |  |  | — |  |  |  | 31,511 |  |  |  | 153,275 |  |  |  | 132,671 |
Issued from available treasury stock |  |  | 266,799 |  |  |  | — |  |  |  | 508,949 |  |  |  | 7,640 |
Total |  |  | 266,799 |  |  |  | 31,511 |  |  |  | 662,224 |  |  |  | 140,311 |
Proceeds from stock option exercises |  | $ | 13,743 |  |  | $ | 1,669 |  |  | $ | 34,189 |  |  | $ | 7,211 |
Stock-based compensation expense is recognized ratably over the requisite service period for all awards. Stock-based compensation expense was as follows:
|  | Three Months Ended June 30, |  |  | Six Months Ended June 30, |
|  | 2013 |  |  | 2012 |  |  | 2013 |  |  | 2012 |
Stock options |  | $ | 1,968 |  |  | $ | 2,158 |  |  | $ | 3,966 |  |  | $ | 4,359 |
Non-vested stock awards/stock units |  |  | 345 |  |  |  | 355 |  |  |  | 689 |  |  |  | 709 |
Deferred stock units |  |  | 330 |  |  |  | 330 |  |  |  | 330 |  |  |  | 330 |
Total |  | $ | 2,643 |  |  | $ | 2,843 |  |  | $ | 4,985 |  |  | $ | 5,398 |
Unrecognized stock-based compensation expense at June 30, 2013 was as follows:
Stock options |  | $ | 13,374 |
Non-vested stock awards/stock units |  |  | 2,245 |
Total |  | $ | 15,619 |

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- Definition Tabular disclosure of components of a stock option or other award plan under which equity-based compensation is awarded to employees, typically comprised of the amount of unearned compensation (deferred compensation cost), compensation expense, and changes in the quantity and fair value of the shares (or other type of equity) granted, exercised, forfeited, and issued and outstanding pertaining to that plan. Disclosure may also include nature and general terms of such arrangements that existed during the period and potential effects of those arrangements on shareholders, effect of compensation cost arising from equity-based payment arrangements on the income statement, method of estimating the fair value of the goods or services received, or the fair value of the equity instruments granted, during the period, cash flow effects resulting from equity-based payment arrangements and, for registrants that accelerate vesting of out of the money share options, reasons for the decision to accelerate. + 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 + Details
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