Common Stock Incentive Plan - Activity (Details) - $ / shares	3 Months Ended	6 Months Ended
	Mar. 31, 2022	Sep. 30, 2022
Restricted Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares, Beginning Balance	37,767	34,066
Granted	21,645	2,811
Vested	(16,064)	(1,987)
Forfeited	(9,282)
Shares, Ending Balance	34,066	34,890
Weighted-Average Grant Date Fair Value, Beginning Balance	$ 92.49	$ 186.12
Weighted-Average Grant Date Fair Value, Granted	215.69	128.11
Weighted-Average Grant Date Fair Value, Vested	80.47	181.27
Weighted-Average Grant Date Fair Value, Forfeited	56.94
Weighted-Average Grant Date Fair Value, Ending Balance	$ 186.12	$ 181.72
RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares, Beginning Balance	60,326	81,179
Granted	20,853	2,498
Shares, Ending Balance	81,179	83,677
Weighted-Average Grant Date Fair Value, Beginning Balance	$ 120.24	$ 144.79
Weighted-Average Grant Date Fair Value, Granted	215.84	128.11
Weighted-Average Grant Date Fair Value, Ending Balance	$ 144.79	$ 144.30