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Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2018

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Restricted Stock Unit Awards

The activity related to our Company’s restricted stock unit awards was as follows:

		Year Ended December 31, 2018
		Number of Awards				Weighted Average Grant Date Fair Value ⁽¹⁾
Nonvested at the beginning of the year			159,539			$	41.60
Granted			24,593				50.01
Vested ⁽²⁾			(90,543	)			36.66
Forfeited			(7,000	)			38.00
Nonvested at the end of the year			86,589			$	49.45

(1)	Fair value is based on the closing price of our common shares on the NASDAQ on the grant date.

(2)	This amount represents the gross number of shares vested before any share forfeiture to pay required tax withholdings. For the year ended December 31, 2018 share awards of 34,430 were withheld for tax payments at a weighted average vest date fair value of $58.44.

Performance-based Equity Awards

The activity related to our Company’s performance-based equity awards was as follows:

		Year Ended December 31, 2018
		Number of Awards				Weighted Average Grant Date Fair Value ⁽¹⁾
Nonvested at the beginning of the year			966,361			$	43.39
Granted			247,554				54.15
Performance Adjustment			(59,833	)			37.25
Vested ⁽²⁾			(274,299	)			37.25
Forfeited			(34,250	)			46.00
Nonvested at the end of the year			845,533			$	48.86

(1)	Fair value is based on the closing price of our common shares on the NASDAQ on the grant date.

(2)	This amount represents the gross number of shares vested before any share forfeiture to pay required tax withholdings. For the year ended December 31, 2018 share awards of 117,005 were withheld for tax payments at a weighted average vest date fair value of $55.65.