Shareholders’ Equity - Additional Information (Details) $ / shares in Units, $ in Thousands		3 Months Ended		6 Months Ended
	Mar. 10, 2022 $ / shares shares	Mar. 31, 2022 USD ($) vesting_installment shares	Mar. 31, 2021 USD ($)	Mar. 31, 2022 USD ($) vesting_installment shares	Mar. 31, 2021 USD ($)
Class of Stock [Line Items]
General and administrative | $		$ 8,470	$ 7,104	$ 16,141	$ 13,364
Equity based compensation expense | $		$ 621	$ 546	$ 1,242	$ 1,104
Unvested shares outstanding (in shares)		158,730		158,730
Vesting 2022
Class of Stock [Line Items]
Shares vesting (in shares)				55,750
Vesting 2023
Class of Stock [Line Items]
Shares vesting (in shares)				47,980
Vesting 2024
Class of Stock [Line Items]
Shares vesting (in shares)				35,940
Vesting 2025
Class of Stock [Line Items]
Shares vesting (in shares)				19,060
Class A Common Stock | 2016 Omnibus Equity Plan
Class of Stock [Line Items]
Number of annual installments | vesting_installment		5		5
Shares granted (in shares)	3,000
Share price (in dollars per share) | $ / shares	$ 30.36
General and administrative | $		$ 547		$ 547
Shares repurchased (in shares)				970
Shares repurchased during period | $				$ 31