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Stock-Based Compensation (Tables)
12 Months Ended
Dec. 31, 2019
Share-based Payment Arrangement [Abstract]  
Schedule of Stock-based Compensation Expense The following table details the components of stock-based compensation expense (income) recognized in net earnings in each of the past three years:
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Year Ended December 31,
(in thousands)201920182017
Restricted Stock$25,154  $24,933  $22,920  
Stock Options(1,567) 4,320  4,340  
Total stock-based compensation expense$23,587  $29,253  $27,260  
Schedule of Shares and Units of Restricted Common Stock A summary of restricted stock and RSU activity during December 31, 2019 follows:
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(in thousands, except per share amounts)Number of Shares/UnitsWeighted Average Grant Date Fair Value
Outstanding at beginning of period — unvested3,831  $14.03  
Granted3,107  9.68  
Canceled(795) 11.97  
Vested(1,670) 13.53  
Outstanding at end of period — unvested4,473  $11.42  
Schedule of Stock Option Activity
Stock option activity for the year ended December 31, 2019 was as follows:

Year Ended December 31, 2019
(in thousands, except per share amounts)Number of SharesWeighted Average ExerciseWeighted Average Remaining Contractual Term (in years)Aggregate Intrinsic Value (in thousands)
Stock option activity:
Outstanding at beginning of period1,780  $14.10  —  —  
Granted—  —  —  —  
Exercised—  —  —  —  
Forfeited and expired(540) 13.34  —  —  
Outstanding at end of period1,240  $14.43  6.5—