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SHARE-BASED AWARDS (Tables)

12 Months Ended

Dec. 31, 2017

SHARE-BASED AWARDS

Stock Option Activity

Activity in the Company’s stock option plans for the year ended December 31, 2017, was as follows (in thousands, except weighted average exercise price and weighted average contractual life):

								Weighted			Weighted
								Average			Average		Aggregate
		2007		1998		Total		Exercise			Contractual		Intrinsic
		Plan		Plan		Shares		Price			Life		Value
Outstanding at December 31, 2016		319		5		324		$	21.67
Granted		—		—		—
Exercised		(84)		(3)		(87)		$	21.95
Forfeited and expired		—		(2)		(2)		$	24.72
Outstanding at December 31, 2017		235		—		235		$	21.54		3.3		$	1,946
Exercisable at December 31, 2017		235		—		235		$	21.54		3.3		$	1,946

Non-Vested Restricted Stock Unit Activity

The following table summarizes non-vested restricted stock unit activity through December 31, 2017, (in thousands, except weighted average grant-date fair value amounts):

		2007 Plan		2016 Plan		Total		Weighted
		Restricted		Restricted		Restricted		Average Grant-
		Stock Units		Stock Units		Stock Units		Date Fair Value
Outstanding at December 31, 2016		701		19		720		$	33.35
Granted		153		304		457		$	31.76
Vested		(470)		(9)		(479)		$	27.35
Canceled		(7)		(5)		(12)		$	37.24
Outstanding at December 31, 2017		377		309		686		$	36.41

Summary of Compensation expense and Other Measures Related to Share-Based awards

Share-based compensation expense and other information related to share-based awards for each of the three years in the period ended December 31, 2017, is as follows:

		Years Ended December 31,
Share-based expense, net of estimated forfeitures (in millions)		2017			2016			2015
Share-based compensation expense		$	11.1		$	9.8		$	12.2
Intrinsic value of options exercised		$	0.7		$	2.0		$	9.2
Tax benefit realized upon stock vesting		$	6.8		$	5.9		$	3.4
Fair value of stock vested		$	17.3		$	15.8		$	8.6

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Tabular disclosure of the amount of total share-based compensation cost, including the amounts attributable to each share-based compensation plan and any related tax benefits.

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-Publisher FASB
-Name Accounting Standards Codification
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Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value.

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Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year.

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