Unitholders' Equity (Tables)

3 Months Ended

Mar. 31, 2022

Equity [Abstract]

Schedule of Nonvested Restricted Stock Units Activity

The following sets forth unvested STIP RSU grants through March 31, 2022:

	STIP Grants
	Number of RSUs (in units)	Weighted Average Grant-Date Fair Value (per unit)
Unvested balance on December 31, 2020	34,627	$	24.50
Granted(1)	286,013	4.89
Forfeited	(215)	24.92
Vested(2)	(68,776)	31.03
Unvested balance on December 31, 2021	251,649	$	2.49
Granted	79,670	3.74
Forfeited	(2,603)	2.16
Vested(3)	(158,844)	2.30
Unvested balance on March 31, 2022	169,872	$	3.26

___________

(1)During the quarter ended March 31, 2021, the Company granted an additional 12,614 RSUs to preserve the economic value of the unvested RSUs after giving effect to the special dividend made in connection with the IMTT Transaction. During the

quarter ended December 31, 2021, the Company granted an additional 228,943 RSUs to preserve the economic value of the

unvested RSUs after giving effect to the one-time distribution made in connection with the AA Transaction.

(2)As a result of the AA Transaction, the Company's Compensation Committee and Board approved the accelerated vesting of the STIP RSU grants for former eligible employees of Atlantic Aviation and MIC Global Services ("MGS"). These RSUs were fully vested on September 23, 2021.

(3)Units related to RSUs vested on March 31, 2022 were issued in April 2022.

The following sets forth unvested Special RSU grants through March 31, 2022:

	Special RSU Grants
	Number of RSUs (in units)	Weighted Average Grant-Date Fair Value (per unit)
Unvested balance on December 31, 2020	4,967	$	40.30
Granted(1)	1,860	—
Vested	(6,827)	29.32
Unvested balance on December 31, 2021	—	$	—

___________

(1)During the quarter ended March 31, 2021, the Company granted an additional 1,860 RSUs to preserve the economic value of the unvested RSUs after giving effect to the special dividend made in connection with the IMTT Transaction.

Schedule of Nonvested Performance-based Units Activity

The following sets forth unvested LTIP PSU grants through March 31, 2022 at the target level of performance:

	LTIP Grants (at Target)
	Number of PSUs (in units)	Weighted Average Grant-Date Fair Value (per unit)
Unvested balance on December 31, 2020	71,521	$	39.47
Granted(1)	1,205,242	5.73
Forfeited(2)	(86,384)	31.39
Vested(2)	(135,493)	37.93
Unvested balance on December 31, 2021	1,054,886	$	2.76
Granted	199,016	3.74
Vested	(356,124)	2.60
Unvested balance on March 31, 2022	897,778	$	3.04

___________

(1)During the quarter ended March 31, 2021, the Company granted an additional 26,004 PSUs to preserve the economic value of the unvested PSUs after giving effect to the special dividend made in connection with the IMTT Transaction. During the quarter ended December 31, 2021, the Company granted an additional 959,700 PSUs to preserve the economic value of the unvested PSUs after giving effect to the one-time distribution made in connection with the AA Transaction.

(2)As a result of the AA Transaction, the Company's Compensation Committee and Board approved the accelerated vesting of the LTIP PSU grants for former eligible employees of Atlantic Aviation and MGS. These PSUs were fully vested on September 23, 2021.

Schedule of Accumulated Other Comprehensive Income (Loss)

The following represents the changes and balances to the components of accumulated other comprehensive loss, net of taxes, for the quarter ended March 31, 2022 and 2021 ($ in thousands):

	Post-Retirement Benefit Plans, net of taxes		Total Unitholders’ Accumulated Other Comprehensive Loss, net of taxes
Balance on December 31, 2020	$	(6,175)	$	(6,175)
Balance on March 31, 2021	$	(6,175)	$	(6,175)
Balance on December 31, 2021	$	(5,106)	$	(5,106)
Balance on March 31, 2022	$	(5,106)	$	(5,106)