Share-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2021

Share-based Payment Arrangement [Abstract]

Schedule of Share-based Compensation, PSUs, Activity

Performance share units (“PSUs”) were granted to certain employees to be settled in shares of the Company's common stock during the three months ended March 31, 2021, for which the service period will end on December 31, 2023 and will vest during the first quarter of 2024. The service period for certain retiree eligible participants is accelerated. The Company granted the following PSUs:

	Shares	Grant Date Fair Value per Unit
PSUs(1)(2)	177,176	$	7.60

(1)The PSU awards are split 50/50 between the Company's three year cumulative Adjusted EBITDA (as defined in Note 12) performance measure and the Company's three-year average pre-tax return on capital performance measure for its coke and logistics businesses and unallocated corporate expenses.

(2)The number of PSUs ultimately awarded will be determined by the above performance measures versus targets and the Company's three-year total shareholder return (“TSR”) as compared to the TSR of the companies making up the Nasdaq Iron & Steel Index (“TSR Modifier”). The TSR Modifier can impact the payout between 75 percent and 125 percent of the Company's final performance measure results.

Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan

Below is a summary of the compensation expense, unrecognized compensation costs, and the period for which the unrecognized compensation cost is expected to be recognized over:

	Three Months Ended March 31,
	2021		2020		March 31, 2021
	Compensation Expense(1)				Unrecognized Compensation Cost		Recognition Period
	(Dollars in millions)						(Years)
Equity Awards:
Stock Options	$	—	$	0.2	$	0.1	0.9
RSUs	0.3		0.4		$	2.3	1.1
PSUs	0.1		0.4		$	2.3	1.6
Total equity awards	$	0.4	$	1.0
Liability Awards:
Cash RSUs	$	0.8	$	—	$	2.3	2.0
Cash incentive award	0.2		0.2		$	3.0	2.0
Total liability awards	$	1.0	$	0.2

(1)Compensation expense recognized by the Company is included in selling, general and administrative expenses on the Consolidated Statements of Income.

Schedule of Unrecognized Compensation Cost, Nonvested Awards

Below is a summary of the compensation expense, unrecognized compensation costs, and the period for which the unrecognized compensation cost is expected to be recognized over:

	Three Months Ended March 31,
	2021		2020		March 31, 2021
	Compensation Expense(1)				Unrecognized Compensation Cost		Recognition Period
	(Dollars in millions)						(Years)
Equity Awards:
Stock Options	$	—	$	0.2	$	0.1	0.9
RSUs	0.3		0.4		$	2.3	1.1
PSUs	0.1		0.4		$	2.3	1.6
Total equity awards	$	0.4	$	1.0
Liability Awards:
Cash RSUs	$	0.8	$	—	$	2.3	2.0
Cash incentive award	0.2		0.2		$	3.0	2.0
Total liability awards	$	1.0	$	0.2

(1)Compensation expense recognized by the Company is included in selling, general and administrative expenses on the Consolidated Statements of Income.