Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2018

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

Schedule of Stock-based Compensation Expense

The following table details the components of stock-based compensation expense recognized in net earnings in each of the past three years:

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	Year Ended December 31,
(in thousands)	2018		2017		2016
Restricted Stock	$	24,933	$	22,920	$	28,612
Stock Options	4,320		4,340		2,683
Total stock-based compensation expense	$	29,253	$	27,260	$	31,295

Schedule of Shares and Units of Restricted Common Stock

A summary of restricted stock and RSU activity during 2018 follows:

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(in thousands, except per share amounts)	Number of Shares/Units		Weighted Average Grant Date Fair Value
Outstanding at beginning of period — unvested	4,267		$	13.12
Granted	1,957		16.08
Cancelled	(252	)	11.98
Vested	(2,141	)	14.22
Outstanding at end of period — unvested	3,831		$	14.03

Schedule of Weighted-average Fair Value Assumptions

The weighted-average fair value and the assumptions used to measure fair value were as follows:

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	Year Ended December 31,
	2018			2017			2016
Stock option assumptions:
Weighted-average fair value	$	—		$	—		$	7.80
Expected volatility	—		%	—		%	60.0		%
Risk-free interest rate	—			—			0.76-1.46%
Expected dividend yield	—		%	—		%	—		%
Derived term in years	—			—			3-4

Schedule of Stock Option Activity

Stock option activity for the year ended December 31, 2018 was as follows:

	Year Ended Year Ended December 31, 2018
(in thousands, except per share amounts)	Number of Shares		Weighted Average Exercise		Weighted Average Remaining Contractual Term (in years)	Aggregate Intrinsic Value (in thousands)
Stock option activity:
Outstanding at beginning of period	1,820		$	14.08	—	—
Granted	—		—		—	—
Exercised	—		—		—	—
Forfeited and expired	(40	)	13.25		—	—
Outstanding at end of period	1,780		$	14.10	7.5	—