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Capital Stock and Share Based Compensation Plans (Tables)
 12 Months Ended
Dec. 31, 2019
Equity [Abstract]  
Schedule of options outstanding and exercisable
The following table summarizes our stock option activity:
Number
of Shares		Weighted-
Average
Exercise Price		Range of
Exercise
Prices
Outstanding at December 31, 2016486,914 $6.81 
$ 6-9
Exercised(235,407)6.20 
6-8
Outstanding at December 31, 2017251,507 7.38 
6-9
Exercised(251,507)7.38 
6-9
Outstanding at December 31, 2018— 
Schedule of cash proceeds received from exercises of stock options
The following table summarizes additional information about exercises of stock options:
 For the years ended December 31,
(in thousands)201920182017
Cash received upon exercise$— $1,857 $1,461 
Intrinsic value (market value on date of exercise less exercise price)— 1,266 3,919 
Tax benefits realized— 315 1,497 
Restricted stock and restricted stock unit vesting activity
The following table summarizes our RSU activity:
  Fair Value
Number
of Shares		Weighted
Average		Range of
Prices
Unvested at December 31, 20161,425,177 $17.05 
$ 12-24
Awarded653,522 22.51 
17-24
Vested(581,920)20.78 
14-24
Forfeited(308,856)17.20 
14-24
Unvested at December 31, 20171,187,923 19.99 
14-24
Awarded816,771 13.28 
11-17
Vested(771,904)14.16 
11-18
Forfeited(57,348)16.68 
13-23
Unvested at December 31, 20181,175,442 15.86 
11-24
Awarded758,557 22.12 
13-23
Vested(536,064)21.67 
12-23
Forfeited(39,497)17.89 
13-24
Unvested at December 31, 20191,358,438 18.68 
11-24
Additional information about restricted stock and restricted stock unit vesting
The following table summarizes additional information about RSU vesting:
 For the years ended December 31,
(in thousands)201920182017
Fair value of RSUs vested$11,618 $10,930 $12,090 
Tax benefits realized on vesting2,969 1,758 4,630 
Schedule of stock compensation costs
Share-based compensation costs were as follows:
 For the years ended December 31,
(in thousands)201920182017
Total share-based compensation$13,308 $11,008 $12,960 
Included in discontinued operations(215)(468)(646)
Included in continuing operations$13,093 $10,540 $12,314 
Share-based compensation, net of tax$9,747 $7,919 $7,605