Share-Based Compensation Plans (Tables)

12 Months Ended

Dec. 31, 2015

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

Schedule of activity of stock options and awards of shares and stock units

The following table summarizes activity regarding our stock options and awards of shares and stock units since December 31, 2012:

Stock Options					Restricted Stock Units
	Shares		Weighted Average Price			Shares		Weighted Average Price
Balance, December 31, 2012	1,796,377		$	17.15	Balance, December 31, 2012	588,907		$	28.56
Granted	—		—		Granted	192,617		$	36.26
Expired	—		—		Forfeited	(15,298	)	$	29.38
Exercised	(485,680	)	$	14.55	Vested	(155,423	)	$	27.77
Balance, December 31, 2013	1,310,697		$	18.12	Balance, December 31, 2013	610,803		$	31.17
Granted	—		—		Granted	176,418		$	43.06
Expired	—		—		Forfeited	(500	)	$	43.76
Exercised	(743,923	)	$	13.52	Vested	(152,423	)	$	32.46
Balance, December 31, 2014	566,774		$	24.15	Balance, December 31, 2014	634,298		$	34.16
Granted	—		—		Granted	241,274		$	45.23
Expired	(30,000	)	$	12.09	Forfeited	(3,587	)	$	29.56
Exercised	(230,048	)	$	26.71	Vested	(266,497	)	$	32.17
Balance, December 31, 2015	306,726		$	23.42	Balance, December 31, 2015	605,488		$	39.47

Summary of information about stock options

The following table summarizes information about our stock options as of December 31, 2015:

Stock Options Outstanding and Exercisable
Range of Exercise Prices	Number	Weighted Average Remaining Life	Weighted Average Exercise Price
$20.42 - $20.54	110,000	1.41 Years	$20.43
$22.52 - $24.48	140,000	3.31 Years	$23.92
$27.39 - $29.26	56,726	0.54 Years	$27.96