Employee Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2015

Employee benefit plans [Line Items]

Restricted Stock Award Activity

Restricted Stock Award Activity

Nonvested Shares	Number of Shares		Weighted Average Grant Date Fair Value Per Share
Nonvested at December 31, 2014	43,577		$	23.98
Granted	62,145		25.67
Vested	(43,577	)	23.98
Forfeited	—		—
Nonvested at December 31, 2015	62,145		$	25.67

Stock Purchase Plan

Stock Purchase Plan

	Year Ended December 31,
	2015		2014		2013
	(dollars in millions)
Proceeds from purchase of shares by employees	$	0.8	$	0.9	$	0.9
Number of shares issued by the Company	38,565		43,273		57,980
Recorded in share-based compensation, net of deferral	$	0.2	$	0.2	$	0.3

Share-Based Compensation Expense Summary

Share‑Based Compensation Expense Summary

	Year Ended December 31,
	2015		2014		2013
	(in millions)
Share‑based compensation expense	$	10	$	10	$	8
Share‑based compensation capitalized as DAC	0.5		0.3		0.2
Income tax benefit	2		2		2

Stock Options [Member]

Employee benefit plans [Line Items]

Schedule of Stock Options

Time Vested Stock Options

	Options for Common Shares		Weighted Average Exercise Price		Number of Exercisable Options
Balance as of December 31, 2014	2,802,853		$	21.45	2,631,653
Options granted	—		—
Options exercised	(432,974	)	20.12
Options forfeited/expired	(9,539	)	20.76
Balance as of December 31, 2015	2,360,340		$	21.73	2,275,096

Schedule of Weighted Average Assumptions on Option Pricing

Lattice Option Pricing

Weighted Average Assumptions (1)

	2014			2013
Dividend yield	2.03		%	2.07		%
Expected volatility	53.24		%	53.41		%
Risk free interest rate	2.21		%	1.35		%
Expected life	6.6 years			6.6 years
Forfeiture rate	3.5		%	4.5		%
Weighted average grant date fair value	$	10.35		$	8.94

____________________

(1) No options were granted in 2015.

Performance Stock Options [Member]

Employee benefit plans [Line Items]

Schedule of Stock Options

Performance Stock Options

	Options for Common Shares		Weighted Average Exercise Price		Number of Exercisable Options
Balance as of December 31, 2014	246,879		$	17.97	0
Options granted	—		—
Options exercised	(7,342	)	17.44
Options forfeited/expired	—		—
Balance as of December 31, 2015	239,537		$	17.92	166,897

Schedule of Weighted Average Assumptions on Option Pricing

Monte Carlo and Lattice Option Pricing

Weighted Average Assumptions (1)

	2013
Dividend yield	2.07		%
Expected volatility	53.5		%
Risk free interest rate	1.36		%
Expected life	6.3 years
Forfeiture rate	4.5		%
Weighted average grant date fair value	$	8.17

____________________

(1) No options were granted in neither 2015 nor 2014.

Restricted Stock Units [Member]

Employee benefit plans [Line Items]

Restricted Stock Unit Activity (Excluding Dividend Equivalents)

Restricted Stock Unit Activity

(Excluding Dividend Equivalents)

Nonvested Stock Units	Number of Stock Units		Weighted Average Grant Date Fair Value Per Share
Nonvested at December 31, 2014	691,303		$	19.23
Granted	320,983		25.23
Delivered	(321,210	)	16.96
Forfeited	(1,795	)	21.73
Nonvested at December 31, 2015	689,281		$	23.23

Performance Restricted Stock Units [Member]

Employee benefit plans [Line Items]

Restricted Stock Unit Activity (Excluding Dividend Equivalents)

Performance Restricted Stock Unit Activity

Performance Restricted Stock Units	Number of Performance Share Units		Weighted Average Grant Date Fair Value Per Share
Nonvested at December 31, 2014	423,302		$	26.72
Granted	200,353		28.31
Delivered	(215,395	)	27.39
Forfeited	—		—
Nonvested at December 31, 2015	408,260		$	27.32