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Stock Plans	3 Months Ended
Stock Plans	Mar. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock Plans	8. STOCK PLANS: During the three months ended March 31, 2017, the Company granted 0.1 million restricted stock units with a weighted-average grant date fair value of $67.22 per award. There were 0.5 million restricted stock units outstanding at March 31, 2017 and December 31, 2016. The compensation expense that has been charged against pre-tax income for all of the Company’s stock-based compensation plans was $1.6 million and $1.5 million for the three months ended March 31, 2017 and 2016, respectively.

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.

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