Share-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2020

Share-based Payment Arrangement [Abstract]

Schedule of stock based compensation cost

The following table summarizes stock-based compensation costs for the three months ended March 31, 2020 and 2019 (in thousands of dollars):

	Three Months Ended March 31,
	2020			2019
Restricted stock awards	$	425		$	240
Restricted stock time-based unit awards	5,160			3,053
Non-qualified stock options	236			680
Restricted stock performance-based unit awards	1,059			27
Equity-based compensation cost	6,880			4,000
Tax Benefit	(1,651		)	(981		)
Equity-based compensation cost, net of tax	$	5,229		$	3,019