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Share and Unit-based Plans (Tables)

12 Months Ended

Dec. 31, 2023

Share-Based Payment Arrangement [Abstract]

Schedule of Activity of Non-vested Stock Units

The following table summarizes the activity of non-vested stock units during the years ended December 31, 2023, 2022 and 2021:

			2023												2022												2021
			Units						Weighted Average Grant Date Fair Value						Units						Weighted Average Grant Date Fair Value						Units						Weighted Average Grant Date Fair Value
Balance at beginning of year			295,054						$	14.58					266,505						$	19.05					309,845						$	21.47
Granted			251,738						10.92						209,146						13.43						169,112						14.61
Vested			(262,745)						14.08						(180,597)						19.84						(211,465)						19.03
Forfeited			—						—						—						—						(987)						22.12
Balance at end of year			284,047						$	11.79					295,054						$	14.58					266,505						$	19.05

Schedule of LTIP Units Granted

The Company has granted the following LTI units during the years ended December 31, 2023, 2022 and 2021:

Grant Date						Units						Type						Fair Value per LTI Unit						Vest Date
1/1/2021						576,378						Service-based						$	10.67					12/31/2023
1/1/2021						1,005,073						Performance-based						$	9.85					12/31/2023
						1,581,451
1/1/2022						376,153						Service-based						$	17.28					12/31/2024
1/1/2022						716,545						Performance-based						$	15.77					12/31/2024
						1,092,698
1/1/2023						577,255						Service-based						$	11.26					12/31/2025
1/1/2023						1,030,077						Performance-based						$	10.97					12/31/2025
						1,607,332

Schedule LTIP Units Valuation Assumptions

The fair value of the market-indexed LTI Units and performance-based LTI Units (Level 3) were estimated on the date of grant using a Monte Carlo Simulation model that based on the following assumptions:

Grant Date						Risk Free Interest Rate						Expected Volatility
1/1/2021						0.17		%				62.82		%
1/1/2022						0.97		%				70.83		%
1/1/2023						4.21		%				74.23		%

Schedule of Activity of Stock Options

The following table summarizes the activity of the non-vested LTI Units during the years ended December 31, 2023, 2022 and 2021:

			2023												2022												2021
			Units						Weighted Average Grant Date Fair Value						Units						Weighted Average Grant Date Fair Value						Units						Weighted Average Grant Date Fair Value
Balance at beginning of year			2,215,167						$	12.90					1,837,691						$	14.14					784,052						$	28.11
Granted			1,607,332						11.07						1,092,698						16.29						1,581,451						10.15
Vested			(1,378,528)						10.94						(386,828)						15.86						(286,373)						17.62
Forfeited			(187,124)						12.15						(328,394)						27.64						(241,439)						29.25
Balance at end of year			2,256,847						$	12.86					2,215,167						$	12.90					1,837,691						$	14.14

The following table summarizes the activity of vested stock options for the years ended December 31, 2023, 2022 and 2021:

			2023												2022												2021
			Options						Weighted Average Exercise Price						Options						Weighted Average Exercise Price						Options						Weighted Average Exercise Price
Balance at beginning of year			26,371						$	54.56					37,515						$	54.34					37,515						$	54.34
Granted			—						—						—						—						—						—
Forfeited			—						$	—					(11,144)						53.82						—						—
Balance at end of year			26,371						$	54.56					26,371						$	54.56					37,515						$	54.34

Schedule of Activity of Non-vested Phantom Stock Units

The following table summarizes the activity of the non-vested phantom stock units for the years ended December 31, 2023, 2022 and 2021:

			2023												2022												2021
			Stock Units						Weighted Average Grant Date Fair Value						Stock Units						Weighted Average Grant Date Fair Value						Stock Units						Weighted Average Grant Date Fair Value
Balance at beginning of year			34,039						$	14.19					—						$	—					4,662						$	35.35
Granted			6,513						11.48						61,420						14.35						17,554						12.09
Vested			(23,509)						13.44						(27,381)						14.55						(22,216)						16.97
Balance at end of year			17,043						$	14.19					34,039						$	14.19					—						$	—

Schedule of Compensation Cost Under the Share and Unit-based Plans

The following summarizes the compensation cost under the share and unit-based plans for the years ended December 31, 2023, 2022 and 2021:

        

			2023						2022						2021
Stock units			$	3,150					$	3,110					$	3,173
LTI units			12,599						18,611						14,448
Phantom stock units			316						398						377
			$	16,065					$	22,119					$	17,998

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