Share-Based Compensation Plans (Tables)

12 Months Ended

Dec. 31, 2019

Share-Based Compensation [Abstract]

Schedule of the Allocation of Performance Shares Between Total Shareholder Return, Earnings per Share, and Return on Invested Capital

	2019		2018		2017
Total shareholder return	45	%	55	%	55	%
Earnings per share	36	%	45	%	45	%
Return on invested capital	18	%	-	%	-	%

Disclosure of Share-based Compensation Arrangements by Share-based Payment Award

	Time-based awards			Performance-based awards
		Weighted-			Weighted-
		average grant		Performance	average grant
	Share Units	date fair value		Shares	date fair value
Non-vested as of December 31, 2018	419,996	$	19.64	628,220	$	21.41
Granted	184,645	$	30.01	250,858	$	34.17
Vested	(196,404)	$	17.08	(236,902)	$	14.92
Forfeited or cancelled	(46,403)	$	23.70	(75,840)	$	27.42
Non-vested as of December 31, 2019	361,834	$	25.84	566,336	$	28.97

	Time-based awards			Performance-based awards
		Weighted-				Weighted-
		average grant		Performance	average grant
	Share Units	date fair value		Shares	date fair value
Non-vested as of December 31, 2017	443,152	$	15.01	744,188	$	14.92
Granted	176,116	$	24.69	215,490	$	29.41
Vested	(182,451)	$	13.21	(284,462)	$	11.19
Forfeited or cancelled	(16,821)	$	19.99	(46,996)	$	17.13
Non-vested as of December 31, 2018	419,996	$	19.64	628,220	$	21.41