Stock Plans	6 Months Ended
Jun. 30, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock Plans	8. STOCK PLANS: In addition to grants of stock options to its directors and employees, which the Company no longer actively grants, the Company’s incentive plans permit the award of restricted stock and restricted stock units. The fair value of restricted stock and restricted stock units with time-based vesting is determined based on the market price of the Company’s stock at the date of grant. The fair value of restricted stock and restricted stock units with performance conditions is determined using a Monte-Carlo simulation model. The Company generally records compensation expense equal to the fair value of each restricted stock award granted over the vesting period. During the six months ended June 30, 2016, the Company granted 0.1 million restricted stock units with a weighted-average grant date fair value of $47.53 per award. There were 0.5 million restricted stock units outstanding at June 30, 2016 and December 31, 2015. The compensation expense that has been charged against pre-tax income for all of the Company’s stock-based compensation plans was $1.5 million for the three months ended June 30, 2016 and 2015, and $3.1 million for the six months ended June 30, 2016 and 2015.

Stock Plans

6 Months Ended

Jun. 30, 2016

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

8. STOCK PLANS:

In addition to grants of stock options to its directors and employees, which the Company no longer actively grants, the Company’s incentive plans permit the award of restricted stock and restricted stock units. The fair value of restricted stock and restricted stock units with time-based vesting is determined based on the market price of the Company’s stock at the date of grant. The fair value of restricted stock and restricted stock units with performance conditions is determined using a Monte-Carlo simulation model. The Company generally records compensation expense equal to the fair value of each restricted stock award granted over the vesting period.

During the six months ended June 30, 2016, the Company granted 0.1 million restricted stock units with a weighted-average grant date fair value of $47.53 per award. There were 0.5 million restricted stock units outstanding at June 30, 2016 and December 31, 2015.

The compensation expense that has been charged against pre-tax income for all of the Company’s stock-based compensation plans was $1.5 million for the three months ended June 30, 2016 and 2015, and $3.1 million for the six months ended June 30, 2016 and 2015.