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Stock Options, Stock Grants, SARs and ESPP
9 Months Ended
Sep. 30, 2015
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]  
Stock Options, Stock Grants, SARs and ESPP

Note 7.  Stock Options, Stock Grants, SARs and ESPP

Stock-based compensation granted under our Company’s stock plans is expensed in tranches over the vesting period. Options and non-performance based grants generally vest equally over a three or four-year period and the options have a maximum term of ten years.  For the nine months ended September 30, 2015, we granted 200,208 stock incentive units at a grant price between $73.62 and $78.86.  Each performance unit and restricted stock unit represents a contingent right to receive one share of common stock as of the vesting date.  Such common stock may be subject to forfeiture for the payment of any required tax withholding.