Stock Compensation Plans (Tables)

12 Months Ended

Dec. 31, 2016

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

Stock Options Outstanding [Table Text Block]

A summary of performance-based unvested stock unit activity is as follows:

(stock units in thousands)	Units (in thousands)		Weighted Average Grant-Date Fair Value
Unvested at December 31, 2014	—		—
Granted	427		18.09
Forfeited	(6	)	18.23
Unvested at December 31, 2015	421		18.09
Vested	(140	)	$	17.90
Forfeited	(20	)	16.83
Unvested at December 31, 2016	261		$	17.98

Restricted Stock and Restricted Stock Units Activity [Table Text Block]

A summary of the activity of our unvested restricted stock and stock unit awards are presented in the following table:

	Shares/units  (in thousands)		Weighted Average Grant-Date Fair Value
Unvested at December 31, 2013	833		$	8.96
Granted	1,046		15.83
Vested and distributed	(564	)	13.33
Forfeited	(26	)	15.38
Unvested at December 31, 2014	1,289		$	12.86
Granted	342		17.29
Vested and distributed	(835	)	11.34
Forfeited	(29	)	10.25
Unvested at December 31, 2015	767		$	14.34
Granted	730		8.76
Vested and distributed	(269	)	12.90
Forfeited	(53	)	11.60
Unvested at December 31, 2016	1,175		$	11.30

Restricted Stock And Restricted Stock Units Vesting Term [Table Text Block]

The vesting provisions for the restricted stock and stock unit awards and the related number of shares granted during the year ended December 31 are as follows:

	Shares/units (in thousands)
Vesting Terms	2016	2015	2014
50% immediately and 50% on the 1 year anniversary of the grant date	—	—	456
25% per year for four years	8	4	39
100% immediately	123	69	54
20% on February 28, 2015, 60% on July 31, 2015 and 20% on February 28, 2016	—	—	459
33.3% per year for three years	599	269	38
Total restricted stock and stock units granted	730	342	1,046