Stock Compensation Plans (Tables)

12 Months Ended

Dec. 31, 2015

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

Summary of stock options outstanding and exercisable under long-term performance compensation plan

A reconciliation of the number of SOSARs outstanding and exercisable under the Long-Term Performance Compensation Plan as of December 31, 2015, and changes during the period then ended is as follows:

	Shares (000's)		Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Term		Aggregate Intrinsic Value (000's)
SOSARs outstanding at January 1, 2015	52		$	21.83	—		—
SOSARs exercised	(52	)	21.83		—		—
SOSARs cancelled / forfeited	—		—		—		—
SOSARs outstanding at December 31, 2015	—		$	—	$	—	$	—

	Year ended December 31,
(in thousands)	2015		2014		2013
Total intrinsic value of SOSARs exercised	$	—	$	5,193	$	4,678
Total fair value of shares vested	$	—	$	—	$	576

Summary of valuation assumptions

	2015
Risk free interest rate	1.80	%
Dividend yield	1.58	%
Volatility factor of the expected market price of the common shares	0.35
Expected life for the options (in years)	5.50

Schedule of stock options rollforward

A reconciliation of the number of Options outstanding and exercisable under the 2014 LT Plan as of December 31, 2015, and changes during the period then ended is as follows:

	Shares (000's)	Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Term	Aggregate Intrinsic Value (000's)
Options outstanding at January 1, 2015	—	$	—
Options granted	325	35.40
Options exercised	—	—
Options cancelled / forfeited	—	—
Options outstanding at December 31, 2015	325	$	35.40	4.84	$	—
Vested and expected to vest at December 31, 2015	322	$	35.40	4.84	$	—
Options exercisable at December 31, 2015	—	$	—		$	—

Summary of stock options

	Year ended December 31,
(in thousands)	2015
Total intrinsic value of Options exercised	$	—
Total fair value of shares vested	$	—
Weighted average fair value of Options granted	$	10.37

Summary of nonvested restricted shares

A summary of the status of the Company's non-vested restricted shares as of December 31, 2015, and changes during the period then ended, is presented below:

	Shares (000)'s		Weighted-Average Grant-Date Fair Value
Non-vested restricted shares at January 1, 2015	175		$	42.69
Granted	108		42.32
Vested	(125	)	39.25
Forfeited	(7	)	49.07
Non-vested restricted shares at December 31, 2015	151		$	44.99

	Year ended December 31,
	2015	2014	2013
Total fair value of shares vested (000's)	$4,918	$1,585	$1,121
Weighted average fair value of restricted shares granted	$42.32	$54.84	$47.65

Summary of nonvested performance share units

A summary of the status of the Company's PSUs as of December 31, 2015, and changes during the period then ended, is presented below:

	Shares (000)'s		Weighted-Average Grant-Date Fair Value
Non-vested at January 1, 2015	329		$	41.92
Granted	133		44.76
Vested	(98	)	29.00
Forfeited	(53	)	33.94
Non-vested at December 31, 2015	311		$	48.53

	Year ended December 31,
	2015	2014	2013
Weighted average fair value of PSUs granted	$44.76	$54.84	$47.32

Fair value of the option component of the ESP Plan

	2015		2014		2013
Risk free interest rate	0.25	%	0.13	%	0.16	%
Dividend yield	1.05	%	0.74	%	1.49	%
Volatility factor of the expected market price of the common shares	0.41		0.23		0.27
Expected life for the options (in years)	1.00		1.00		1.00