Equity Based Compensation and Cash Awards - Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Equity based compensation
Equity based compensation expense	$ 8,499	$ 5,641	$ 14,826	$ 8,473
AM LTIP RSUs
Equity based compensation
Equity based compensation expense	6,549	4,425	11,610	6,913
ROIC PSUs
Equity based compensation
Equity based compensation expense	1,723	988	2,784	1,105
Equity awards issued to directors
Equity based compensation
Equity based compensation expense	$ 227	$ 228	$ 432	$ 455